Snippets Collections
popUpDemo.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>JavaScript Pop-Up Boxes</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            text-align: center;
            margin-top: 50px;
        }

        button {
            padding: 10px 15px;
            font-size: 16px;
            margin: 10px;
        }
    </style>
</head>
<body>

    <h1>JavaScript Pop-Up Box Demonstration</h1>
    <button onclick="showAlert()">Show Alert</button>
    <button onclick="showConfirm()">Show Confirm</button>
    <button onclick="showPrompt()">Show Prompt</button>

    <script>
        function showAlert() {
            alert("This is an alert box!");
        }

        function showConfirm() {
            const result = confirm("Do you want to proceed?");
            if (result) {
                alert("You clicked OK!");
            } else {
                alert("You clicked Cancel!");
            }
        }

        function showPrompt() {
            const name = prompt("Please enter your name:");
            if (name) {
                alert("Hello, " + name + "!");
            } else {
                alert("No name entered.");
            }
        }
    </script>

</body>
</html>
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Basic Flexbox with Animation</title>
    <style>
       
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            background-color: #f0f0f0;
        }

        
        .flex-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 20px;
            width: 80%;
            max-width: 800px;
        }

        
        .flex-item {
            background-color: #3498db;
            color: white;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 150px;
            width: 30%;
            font-size: 20px;
            font-weight: bold;
            border-radius: 8px;
            transition: transform 0.3s ease, background-color 0.3s ease;
        }

       
        .flex-item:hover {
            transform: scale(1.1);
            background-color: #2980b9;
        }
    </style>
</head>

<body>
    <div class="flex-container">
        <div class="flex-item">Item 1</div>
        <div class="flex-item">Item 2</div>
        <div class="flex-item">Item 3</div>
        <div class="flex-item">Item 4</div>
        <div class="flex-item">Item 5</div>
        <div class="flex-item">Item 6</div>
    </div>
</body>

</html>
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Basic CSS Grid with Animation</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            background-color: #f0f0f0;
        }

        .grid-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            width: 80%;
            max-width: 800px;
        }

       
        .grid-item {
            background-color: #3498db;
            color: white;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 150px;
            font-size: 20px;
            font-weight: bold;
            border-radius: 8px;
            transition: transform 0.3s ease, background-color 0.3s ease;
        }

        .grid-item:hover {
            transform: scale(1.1);
            background-color: #2980b9;
        }
    </style>
</head>

<body>
    <div class="grid-container">
        <div class="grid-item">Item 1</div>
        <div class="grid-item">Item 2</div>
        <div class="grid-item">Item 3</div>
        <div class="grid-item">Item 4</div>
        <div class="grid-item">Item 5</div>
        <div class="grid-item">Item 6</div>
    </div>
</body>

</html>
calculator.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Scientific Calculator</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
            background-color: #f4f4f4;
        }

        #calculator {
            border: 1px solid #ccc;
            border-radius: 8px;
            padding: 20px;
            background-color: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        #display {
            width: 100%;
            height: 40px;
            text-align: right;
            font-size: 24px;
            border: 1px solid #ccc;
            margin-bottom: 10px;
            padding: 5px;
            border-radius: 5px;
        }

        button {
            width: 60px;
            height: 60px;
            font-size: 20px;
            margin: 5px;
            border: none;
            border-radius: 5px;
            background-color: #6200ea;
            color: white;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        button:hover {
            background-color: #3700b3;
        }

        .row {
            display: flex;
        }
    </style>
</head>
<body>

<div id="calculator">
    <input type="text" id="display" disabled>
    <div class="row">
        <button onclick="appendToDisplay('7')">7</button>
        <button onclick="appendToDisplay('8')">8</button>
        <button onclick="appendToDisplay('9')">9</button>
        <button onclick="appendToDisplay('/')">/</button>
    </div>
    <div class="row">
        <button onclick="appendToDisplay('4')">4</button>
        <button onclick="appendToDisplay('5')">5</button>
        <button onclick="appendToDisplay('6')">6</button>
        <button onclick="appendToDisplay('*')">*</button>
    </div>
    <div class="row">
        <button onclick="appendToDisplay('1')">1</button>
        <button onclick="appendToDisplay('2')">2</button>
        <button onclick="appendToDisplay('3')">3</button>
        <button onclick="appendToDisplay('-')">-</button>
    </div>
    <div class="row">
        <button onclick="appendToDisplay('0')">0</button>
        <button onclick="appendToDisplay('.')">.</button>
        <button onclick="calculateResult()">=</button>
        <button onclick="appendToDisplay('+')">+</button>
    </div>
    <div class="row">
        <button onclick="clearDisplay()">C</button>
    </div>
</div>

<script>
    function appendToDisplay(value) {
        document.getElementById("display").value += value;
    }

    function clearDisplay() {
        document.getElementById("display").value = "";
    }

    function calculateResult() {
        const display = document.getElementById("display");
        try {
            const result = eval(display.value);
            display.value = result;
        } catch (error) {
            display.value = "Error";
        }
    }
</script>

</body>
</html>
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class SelectExample {
    public static void main(String[] args) {
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
            Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe", "system", "pragna");

            String selectQuery = "SELECT EID, ESAL, ENAME FROM emp WHERE ESAL > ?";
            PreparedStatement pstmt = con.prepareStatement(selectQuery);
            pstmt.setInt(1, 30000); // Minimum ESAL for selection

            ResultSet rs = pstmt.executeQuery();
            while (rs.next()) {
                int eid = rs.getInt("EID");
                int esal = rs.getInt("ESAL");
                String ename = rs.getString("ENAME");
                System.out.println("EID: " + eid + ", ESAL: " + esal + ", ENAME: " + ename);
            }

            rs.close();
            pstmt.close();
            con.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;

public class UpdateExample {
    public static void main(String[] args) {
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
            Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe", "system", "pragna");

            String updateQuery = "UPDATE emp SET ESAL = ? WHERE EID = ?";
            PreparedStatement pstmt = con.prepareStatement(updateQuery);
            pstmt.setInt(1, 60000); // New ESAL
            pstmt.setInt(2, 30);    // EID of the employee to update

            int rowsUpdated = pstmt.executeUpdate();
            System.out.println("Rows updated: " + rowsUpdated);

            pstmt.close();
            con.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;

public class InsertExample {
    public static void main(String[] args) {
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
            Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe", "system", "pragna");

            String insertQuery = "INSERT INTO emp (EID, ESAL, ENAME) VALUES (?, ?, ?)";
            PreparedStatement pstmt = con.prepareStatement(insertQuery);
            pstmt.setInt(1, 30);          // Set EID
            pstmt.setInt(2, 50000);       // Set ESAL
            pstmt.setString(3, "Manish"); // Set ENAME

            int rowsInserted = pstmt.executeUpdate();
            System.out.println("Rows inserted: " + rowsInserted);

            pstmt.close();
            con.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
Logics:
1)Tip Calculator
super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)
 
        binding.button.setOnClickListener() {
            calculateTip()
        }
    }
    fun calculateTip()
    {
        val cost =(binding.cost.text.toString()).toDouble()
        val selected =binding.RG.checkedRadioButtonId
        val tipPercent=when(selected)
        {
            R.id.radioButton ->15
            R.id.radioButton2 ->18
            else -> 20
        }
        var tip=tipPercent*cost
        if(binding.switch2.isChecked)
        {
            tip= ceil(tip)
        }
        binding.textView7.text=tip.toString()
    }
}
2)Toast message
val button:Button=findViewById(R.id.button)
        button.setOnClickListener{
            Toast.makeText(this,"Clicked",Toast.LENGTH_LONG).show()
        }
3)dice roller
val button: Button=findViewById(R.id.button)
        button.setOnClickListener{
            rollDice()
        }
    }
    private fun rollDice(){
        val dice=Dice(6)
        val diceRoll=dice.roll()
        val img :ImageView=findViewById(R.id.imageView)
        val drawableResource = when(diceRoll){
            1->R.drawable.dice1
            2->R.drawable.dice2
            3->R.drawable.dice3
            4->R.drawable.dice4
            5->R.drawable.dice5
            else->R.drawable.dice5
        }
        img.setImageResource(drawableResource)
    }
}
class Dice(private val numsides:Int){
    fun roll():Int{
        return (1..numsides).random()
    }
}
4)explicit intent
//Explicit Intent
        var t: TextView = findViewById(R.id.textView)
        var f: FloatingActionButton = findViewById(R.id.floatingActionButton)
        f.setOnClickListener()
        {
            var i = Intent(this, MainActivity2::class.java)
            startActivity(i)
        }
    }
}
5)activity lifecycle
@SuppressLint("MissingInflatedId")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_main)
        Toast.makeText(applicationContext,"ONCREATE() CALLED",Toast.LENGTH_SHORT).show()
    }
    override fun onStart() {
        super.onStart()
        Toast.makeText(applicationContext,"ONSTART() CALLED",Toast.LENGTH_SHORT).show()
    }
    override fun onRestart() {
        super.onRestart()
        Toast.makeText(applicationContext,"ONRESTART() CALLED",Toast.LENGTH_SHORT).show()
    }
    override fun onResume() {
        super.onResume()
        Toast.makeText(applicationContext,"ONRESUME() CALLED",Toast.LENGTH_SHORT).show()
    }
    override fun onPause() {
        super.onPause()
        Toast.makeText(applicationContext,"ONPAUSE() CALLED",Toast.LENGTH_SHORT).show()
    }
    override fun onStop() {
        super.onStop()
        Toast.makeText(applicationContext,"ONSTOP() CALLED",Toast.LENGTH_SHORT).show()
    }
    override fun onDestroy() {
        super.onDestroy()
        Toast.makeText(applicationContext,"ONDESTROY() CALLED",Toast.LENGTH_SHORT).show()
    }
}
6)copy and paste
setContentView(R.layout.activity_main)
        val button:Button=findViewById(R.id.button)
        val et:EditText=findViewById(R.id.editTextText)
        val tv:TextView=findViewById(R.id.textView)
 
        button.setOnClickListener{
            tv.text=et.text.toString()
            Toast.makeText(this,"Text Copied",Toast.LENGTH_LONG).show()
        }
    }
}
7)hello world
<TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textPersonName"
        android:minHeight="48dp"
        android:textAllCaps="true"
        android:textColor="#289428"
        android:text="MAD LAB"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.5" />
8)implicit intent
//implicit
        val url = "https://www.google.com"
        val implicitButton : FloatingActionButton = findViewById(R.id.floatingActionButton)
        implicitButton.setOnClickListener{
            val implicitIntent =Intent(Intent.ACTION_VIEW, Uri.parse(url))
            startActivity(implicitIntent)
        }
    }
}
9)login module
setContentView(R.layout.activity_main)
 
        userET = findViewById(R.id.editTextText3)
        passET = findViewById(R.id.editTextText4)
        loginBtn =findViewById(R.id.button3)
        loginBtn.setOnClickListener {
 
            if(userET.text.toString()=="cvr" && passET.text.toString()=="cvr123")
            {
                val intent= Intent(this,MainActivity2::class.java)
                intent.putExtra("Username",userET.text.toString())
                intent.putExtra("Password",passET.text.toString())
                startActivity(intent)
                Toast.makeText(this,"login success",Toast.LENGTH_LONG).show()
            }
            else
            {
                Toast.makeText(this,"error login ",Toast.LENGTH_LONG).show()
            }
        }
 
 
 
    }
}
ActivityMain.kt: 
package com.example.quizapp 
 
import androidx.appcompat.app.AppCompatActivity 
import android.os.Bundle 
 
class MainActivity : AppCompatActivity() { 
    override fun onCreate(savedInstanceState: Bundle?) { 
        super.onCreate(savedInstanceState) 
        setContentView(R.layout.activity_main) 
 
    } 
    companion object{ 
        var count:Int=0 
    } 
} 
main_activity: 
<?xml version="1.0" encoding="utf-8"?> 
<androidx.constraintlayout.widget.ConstraintLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".MainActivity"> 
 
    <androidx.fragment.app.FragmentContainerView 
        android:id="@+id/fragmentContainerView" 
        android:name="androidx.navigation.fragment.NavHostFragment" 
        android:layout_width="409dp" 
        android:layout_height="729dp" 
        app:defaultNavHost="true" 
        app:layout_constraintBottom_toBottomOf="parent" 
        app:layout_constraintEnd_toEndOf="parent" 
        app:layout_constraintStart_toStartOf="parent" 
        app:layout_constraintTop_toTopOf="parent" 
        app:navGraph="@navigation/navgraph" /> 
</androidx.constraintlayout.widget.ConstraintLayout> 
win.kt: 
package com.example.quizapp 
 
import android.os.Bundle 
import androidx.fragment.app.Fragment 
import android.view.LayoutInflater 
import android.view.View 
import android.view.ViewGroup 
import android.widget.Button 
import android.widget.TextView 
import androidx.navigation.Navigation 
 
private const val ARG_PARAM1 = "param1" 
private const val ARG_PARAM2 = "param2" 
 
class win : Fragment() { 
    // TODO: Rename and change types of parameters 
    private var param1: String? = null 
    private var param2: String? = null 
 
    override fun onCreate(savedInstanceState: Bundle?) { 
        super.onCreate(savedInstanceState) 
        arguments?.let { 
            param1 = it.getString(ARG_PARAM1) 
            param2 = it.getString(ARG_PARAM2) 
        } 
    } 
 
    override fun onCreateView( 
        inflater: LayoutInflater, container: ViewGroup?, 
        savedInstanceState: Bundle? 
    ): View? { 
        var view:View=inflater.inflate(R.layout.fragment_win, container, false) 
        var tv:TextView=view.findViewById(R.id.textView) 
        var btn:Button=view.findViewById(R.id.next) 
        if(MainActivity.count==4) 
            tv.text="Congratulations you won the quiz \n score : "+MainActivity.count 
        else 
            tv.text="" 
        btn.setOnClickListener{ 
            tv.text="" 
            MainActivity.count=0 
            Navigation.findNavController(view).navigate(R.id.action_win2_to_quest1) 
        } 
        return view 
    } 
 
    companion object { 
                @JvmStatic 
        fun newInstance(param1: String, param2: String) = 
            win().apply { 
                arguments = Bundle().apply { 
                    putString(ARG_PARAM1, param1) 
                    putString(ARG_PARAM2, param2) 
                } 
            } 
    } 
} 
fragment_win.xml: 
<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".win"> 
 
    <androidx.constraintlayout.widget.ConstraintLayout 
        android:layout_width="match_parent" 
        android:layout_height="match_parent"> 
 
        <Button 
            android:id="@+id/next" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="Start quiz" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toTopOf="parent" 
            app:layout_constraintVertical_bias="0.314" /> 
 
        <TextView 
            android:id="@+id/textView" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:textColor="#000000" 
            android:textSize="28dp" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintHorizontal_bias="0.498" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toTopOf="parent" 
            app:layout_constraintVertical_bias="0.593" /> 
 
    </androidx.constraintlayout.widget.ConstraintLayout> 
 
</FrameLayout> 
lose.kt: 
package com.example.quizapp 
 
import android.os.Bundle 
import androidx.fragment.app.Fragment 
import android.view.LayoutInflater 
import android.view.View 
import android.view.ViewGroup 
import android.widget.Button 
import androidx.navigation.Navigation 
 
// TODO: Rename parameter arguments, choose names that match 
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER 
private const val ARG_PARAM1 = "param1" 
private const val ARG_PARAM2 = "param2" 
 
class lose : Fragment() { 
    // TODO: Rename and change types of parameters 
    private var param1: String? = null 
    private var param2: String? = null 
 
    override fun onCreate(savedInstanceState: Bundle?) { 
        super.onCreate(savedInstanceState) 
        arguments?.let { 
            param1 = it.getString(ARG_PARAM1) 
            param2 = it.getString(ARG_PARAM2) 
        } 
    } 
 
    override fun onCreateView( 
        inflater: LayoutInflater, container: ViewGroup?, 
        savedInstanceState: Bundle? 
    ): View? { 
 
        var view:View= inflater.inflate(R.layout.fragment_lose, container, false) 
        var btn:Button=view.findViewById(R.id.next) 
        btn.setOnClickListener { 
            Navigation.findNavController(view).navigate(R.id.action_lose_to_win2) 
 
        } 
        return view 
    } 
 
    companion object { 
        @JvmStatic 
        fun newInstance(param1: String, param2: String) = 
            lose().apply { 
                arguments = Bundle().apply { 
                    putString(ARG_PARAM1, param1) 
                    putString(ARG_PARAM2, param2) 
                } 
            } 
    } 
} 
fragment_lose.xml: 
<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".lose"> 
 
    <androidx.constraintlayout.widget.ConstraintLayout 
        android:layout_width="match_parent" 
        android:layout_height="match_parent"> 
 
        <Button 
            android:id="@+id/next" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="Try again" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintHorizontal_bias="0.498" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toBottomOf="@+id/textView" 
            app:layout_constraintVertical_bias="0.5" /> 
 
        <TextView 
            android:id="@+id/textView" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="Sorry you lost the quiz" 
            android:textColor="#000000" 
            android:textSize="28dp" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toTopOf="parent" 
            app:layout_constraintVertical_bias="0.357" /> 
 
    </androidx.constraintlayout.widget.ConstraintLayout> 
</FrameLayout> 
quest1.kt: 
package com.example.quizapp 
 
import android.os.Bundle 
import android.provider.MediaStore.Audio.Radio 
import androidx.fragment.app.Fragment 
import android.view.LayoutInflater 
import android.view.View 
import android.view.ViewGroup 
import android.widget.Button 
import android.widget.RadioGroup 
import androidx.lifecycle.findViewTreeViewModelStoreOwner 
import androidx.navigation.Navigation 
 
// TODO: Rename parameter arguments, choose names that match 
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER 
private const val ARG_PARAM1 = "param1" 
private const val ARG_PARAM2 = "param2" 
 
class quest1 : Fragment() { 
    // TODO: Rename and change types of parameters 
    private var param1: String? = null 
    private var param2: String? = null 
 
    override fun onCreate(savedInstanceState: Bundle?) { 
        super.onCreate(savedInstanceState) 
        arguments?.let { 
            param1 = it.getString(ARG_PARAM1) 
            param2 = it.getString(ARG_PARAM2) 
        } 
    } 
 
    override fun onCreateView( 
        inflater: LayoutInflater, container: ViewGroup?, 
        savedInstanceState: Bundle? 
    ): View? { 
        var view:View= inflater.inflate(R.layout.fragment_quest1, container, false) 
        var btn:Button=view.findViewById(R.id.next) 
        var rg:RadioGroup=view.findViewById(R.id.radioGroup) 
        btn.setOnClickListener{ 
            if(rg.checkedRadioButtonId==R.id.radio1) 
                MainActivity.count++ 
            Navigation.findNavController(view).navigate(R.id.action_quest1_to_quest2) 
        } 
        return view 
    } 
 
    companion object { 
        @JvmStatic 
        fun newInstance(param1: String, param2: String) = 
            quest1().apply { 
                arguments = Bundle().apply { 
                    putString(ARG_PARAM1, param1) 
                    putString(ARG_PARAM2, param2) 
                } 
            } 
    } 
} 
fragment_quest1.xml: 
<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".quest1"> 
 
    <androidx.constraintlayout.widget.ConstraintLayout 
        android:layout_width="match_parent" 
        android:layout_height="match_parent"> 
 
        <TextView 
            android:id="@+id/textView" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="welcome to quiz" 
            android:textColor="#000000" 
            android:textSize="28dp" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toTopOf="parent" 
            app:layout_constraintVertical_bias="0.059" /> 
 
        <TextView 
            android:id="@+id/quest" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="Quest1 : who is chiranjeevi" 
            android:textColor="#000000" 
            android:textSize="28dp" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toTopOf="parent" 
            app:layout_constraintVertical_bias="0.18" /> 
 
        <RadioGroup 
            android:id="@+id/radioGroup" 
            android:layout_width="180dp" 
            android:layout_height="wrap_content" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintHorizontal_bias="0.168" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toBottomOf="@+id/quest" 
            app:layout_constraintVertical_bias="0.114"> 
 
            <RadioButton 
                android:id="@+id/radio1" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="actor" /> 
 
            <RadioButton 
                android:id="@+id/radio2" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="cricketer" /> 
 
            <RadioButton 
                android:id="@+id/radio3" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="comedian" /> 
 
            <RadioButton 
                android:id="@+id/radio4" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="Prime minister" 
                app:layout_constraintBottom_toBottomOf="parent" 
                app:layout_constraintTop_toTopOf="parent" /> 
        </RadioGroup> 
 
        <Button 
            android:id="@+id/next" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="next" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintHorizontal_bias="0.498" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toBottomOf="@+id/radioGroup" 
            app:layout_constraintVertical_bias="0.361" /> 
    </androidx.constraintlayout.widget.ConstraintLayout> 
</FrameLayout> 
quest2.kt: 
package com.example.quizapp 
 
import android.os.Bundle 
import androidx.fragment.app.Fragment 
import android.view.LayoutInflater 
import android.view.View 
import android.view.ViewGroup 
import android.widget.Button 
import android.widget.RadioGroup 
import androidx.navigation.Navigation 
 
// TODO: Rename parameter arguments, choose names that match 
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER 
private const val ARG_PARAM1 = "param1" 
private const val ARG_PARAM2 = "param2" 
 
/** 
 * A simple [Fragment] subclass. 
 * Use the [quest2.newInstance] factory method to 
 * create an instance of this fragment. 
 */ 
class quest2 : Fragment() { 
    // TODO: Rename and change types of parameters 
    private var param1: String? = null 
    private var param2: String? = null 
 
    override fun onCreate(savedInstanceState: Bundle?) { 
        super.onCreate(savedInstanceState) 
        arguments?.let { 
            param1 = it.getString(ARG_PARAM1) 
            param2 = it.getString(ARG_PARAM2) 
        } 
    } 
 
    override fun onCreateView( 
        inflater: LayoutInflater, container: ViewGroup?, 
        savedInstanceState: Bundle? 
    ): View? { 
        // Inflate the layout for this fragment 
        var view:View=inflater.inflate(R.layout.fragment_quest2, container, false) 
        var btn: Button =view.findViewById(R.id.next) 
        var rg: RadioGroup =view.findViewById(R.id.radioGroup) 
        btn.setOnClickListener{ 
            if(rg.checkedRadioButtonId==R.id.radio2) 
                MainActivity.count++ 
            Navigation.findNavController(view).navigate(R.id.action_quest2_to_quest3) 
        } 
        return view 
    } 
 
    companion object { 
        /** 
         * Use this factory method to create a new instance of 
         * this fragment using the provided parameters. 
         * 
         * @param param1 Parameter 1. 
         * @param param2 Parameter 2. 
         * @return A new instance of fragment quest2. 
         */ 
        // TODO: Rename and change types and number of parameters 
        @JvmStatic 
        fun newInstance(param1: String, param2: String) = 
            quest2().apply { 
                arguments = Bundle().apply { 
                    putString(ARG_PARAM1, param1) 
                    putString(ARG_PARAM2, param2) 
                } 
            } 
    } 
} 
fragment_quest2.xml: 
<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".quest2"> 
 
    <androidx.constraintlayout.widget.ConstraintLayout 
        android:layout_width="match_parent" 
        android:layout_height="match_parent"> 
 
        <TextView 
            android:id="@+id/quest" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="Quest2 : who is virat Kohli" 
            android:textColor="#000000" 
            android:textSize="28dp" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toTopOf="parent" 
            app:layout_constraintVertical_bias="0.18" /> 
 
        <RadioGroup 
            android:id="@+id/radioGroup" 
            android:layout_width="180dp" 
            android:layout_height="wrap_content" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintHorizontal_bias="0.168" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toBottomOf="@+id/quest" 
            app:layout_constraintVertical_bias="0.114"> 
 
            <RadioButton 
                android:id="@+id/radio1" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="actor" /> 
 
            <RadioButton 
                android:id="@+id/radio2" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="cricketer" /> 
 
            <RadioButton 
                android:id="@+id/radio3" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="comedian" /> 
 
            <RadioButton 
                android:id="@+id/radio4" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="Prime minister" 
                app:layout_constraintBottom_toBottomOf="parent" 
                app:layout_constraintTop_toTopOf="parent" /> 
        </RadioGroup> 
 
        <Button 
            android:id="@+id/next" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="next" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintHorizontal_bias="0.498" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toBottomOf="@+id/radioGroup" 
            app:layout_constraintVertical_bias="0.361" /> 
    </androidx.constraintlayout.widget.ConstraintLayout> 
 
</FrameLayout> 
 
quest3.kt: 
package com.example.quizapp 
 
import android.os.Bundle 
import androidx.fragment.app.Fragment 
import android.view.LayoutInflater 
import android.view.View 
import android.view.ViewGroup 
import android.widget.Button 
import android.widget.RadioGroup 
import androidx.navigation.Navigation 
 
// TODO: Rename parameter arguments, choose names that match 
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER 
private const val ARG_PARAM1 = "param1" 
private const val ARG_PARAM2 = "param2" 
 
/** 
 * A simple [Fragment] subclass. 
 * Use the [quest3.newInstance] factory method to 
 * create an instance of this fragment. 
 */ 
class quest3 : Fragment() { 
    // TODO: Rename and change types of parameters 
    private var param1: String? = null 
    private var param2: String? = null 
 
    override fun onCreate(savedInstanceState: Bundle?) { 
        super.onCreate(savedInstanceState) 
        arguments?.let { 
            param1 = it.getString(ARG_PARAM1) 
            param2 = it.getString(ARG_PARAM2) 
        } 
    } 
 
    override fun onCreateView( 
        inflater: LayoutInflater, container: ViewGroup?, 
        savedInstanceState: Bundle? 
    ): View? { 
        // Inflate the layout for this fragment 
        var view:View= inflater.inflate(R.layout.fragment_quest3, container, false) 
        var btn: Button =view.findViewById(R.id.next) 
        var rg: RadioGroup =view.findViewById(R.id.radioGroup) 
        btn.setOnClickListener{ 
            if(rg.checkedRadioButtonId==R.id.radio3) 
                MainActivity.count++ 
            Navigation.findNavController(view).navigate(R.id.action_quest3_to_quest4) 
        } 
        return view 
    } 
 
    companion object { 
        /** 
         * Use this factory method to create a new instance of 
         * this fragment using the provided parameters. 
         * 
         * @param param1 Parameter 1. 
         * @param param2 Parameter 2. 
         * @return A new instance of fragment quest3. 
         */ 
        // TODO: Rename and change types and number of parameters 
        @JvmStatic 
        fun newInstance(param1: String, param2: String) = 
            quest3().apply { 
                arguments = Bundle().apply { 
                    putString(ARG_PARAM1, param1) 
                    putString(ARG_PARAM2, param2) 
                } 
            } 
    } 
} 
fragment_quest3.xml: 
<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".quest3"> 
 
    <androidx.constraintlayout.widget.ConstraintLayout 
        android:layout_width="match_parent" 
        android:layout_height="match_parent"> 
 
 
        <TextView 
            android:id="@+id/quest" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="Quest3 : who is bramhanandham" 
            android:textColor="#000000" 
            android:textSize="28dp" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toTopOf="parent" 
            app:layout_constraintVertical_bias="0.18" /> 
 
        <RadioGroup 
            android:id="@+id/radioGroup" 
            android:layout_width="180dp" 
            android:layout_height="wrap_content" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintHorizontal_bias="0.168" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toBottomOf="@+id/quest" 
            app:layout_constraintVertical_bias="0.114"> 
 
            <RadioButton 
                android:id="@+id/radio1" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="actor" /> 
 
            <RadioButton 
                android:id="@+id/radio2" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="cricketer" /> 
 
            <RadioButton 
                android:id="@+id/radio3" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="comedian" /> 
 
            <RadioButton 
                android:id="@+id/radio4" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="Prime minister" 
                app:layout_constraintBottom_toBottomOf="parent" 
                app:layout_constraintTop_toTopOf="parent" /> 
        </RadioGroup> 
 
        <Button 
            android:id="@+id/next" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="next" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintHorizontal_bias="0.498" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toBottomOf="@+id/radioGroup" 
            app:layout_constraintVertical_bias="0.361" /> 
    </androidx.constraintlayout.widget.ConstraintLayout> 
 
</FrameLayout> 
quest4.kt: 
package com.example.quizapp 
 
import android.os.Bundle 
import androidx.fragment.app.Fragment 
import android.view.LayoutInflater 
import android.view.View 
import android.view.ViewGroup 
import android.widget.Button 
import android.widget.RadioGroup 
import androidx.navigation.Navigation 
 
// TODO: Rename parameter arguments, choose names that match 
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER 
private const val ARG_PARAM1 = "param1" 
private const val ARG_PARAM2 = "param2" 
 
/** 
 * A simple [Fragment] subclass. 
 * Use the [quest4.newInstance] factory method to 
 * create an instance of this fragment. 
 */ 
class quest4 : Fragment() { 
    // TODO: Rename and change types of parameters 
    private var param1: String? = null 
    private var param2: String? = null 
 
    override fun onCreate(savedInstanceState: Bundle?) { 
        super.onCreate(savedInstanceState) 
        arguments?.let { 
            param1 = it.getString(ARG_PARAM1) 
            param2 = it.getString(ARG_PARAM2) 
        } 
    } 
 
    override fun onCreateView( 
        inflater: LayoutInflater, container: ViewGroup?, 
        savedInstanceState: Bundle? 
    ): View? { 
        // Inflate the layout for this fragment 
        var view:View= inflater.inflate(R.layout.fragment_quest4, container, false) 
        var btn: Button =view.findViewById(R.id.next) 
        var rg: RadioGroup =view.findViewById(R.id.radioGroup) 
        btn.setOnClickListener{ 
            if(rg.checkedRadioButtonId==R.id.radio4) 
                MainActivity.count++ 
            if(MainActivity.count==4) 
                Navigation.findNavController(view).navigate(R.id.action_quest4_to_win2) 
            else 
                Navigation.findNavController(view).navigate(R.id.action_quest4_to_lose) 
        } 
        return view 
    } 
 
    companion object { 
        /** 
         * Use this factory method to create a new instance of 
         * this fragment using the provided parameters. 
         * 
         * @param param1 Parameter 1. 
         * @param param2 Parameter 2. 
         * @return A new instance of fragment quest4. 
         */ 
        // TODO: Rename and change types and number of parameters 
        @JvmStatic 
        fun newInstance(param1: String, param2: String) = 
            quest4().apply { 
                arguments = Bundle().apply { 
                    putString(ARG_PARAM1, param1) 
                    putString(ARG_PARAM2, param2) 
                } 
            } 
    } 
} 
fragment_quest4.xml: 
<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".quest4"> 
 
    <androidx.constraintlayout.widget.ConstraintLayout 
        android:layout_width="match_parent" 
        android:layout_height="match_parent"> 
 
 
        <TextView 
            android:id="@+id/quest" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="Quest4 : who is narendra modi" 
            android:textColor="#000000" 
            android:textSize="28dp" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toTopOf="parent" 
            app:layout_constraintVertical_bias="0.18" /> 
 
        <RadioGroup 
            android:id="@+id/radioGroup" 
            android:layout_width="180dp" 
            android:layout_height="wrap_content" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintHorizontal_bias="0.168" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toBottomOf="@+id/quest" 
            app:layout_constraintVertical_bias="0.114"> 
 
            <RadioButton 
                android:id="@+id/radio1" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="actor" /> 
 
            <RadioButton 
                android:id="@+id/radio2" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="cricketer" /> 
 
            <RadioButton 
                android:id="@+id/radio3" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="comedian" /> 
 
            <RadioButton 
                android:id="@+id/radio4" 
                android:layout_width="match_parent" 
                android:layout_height="wrap_content" 
                android:text="Prime minister" 
                app:layout_constraintBottom_toBottomOf="parent" 
                app:layout_constraintTop_toTopOf="parent" /> 
        </RadioGroup> 
 
        <Button 
            android:id="@+id/next" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content" 
            android:text="submit" 
            app:layout_constraintBottom_toBottomOf="parent" 
            app:layout_constraintEnd_toEndOf="parent" 
            app:layout_constraintHorizontal_bias="0.498" 
            app:layout_constraintStart_toStartOf="parent" 
            app:layout_constraintTop_toBottomOf="@+id/radioGroup" 
            app:layout_constraintVertical_bias="0.361" /> 
    </androidx.constraintlayout.widget.ConstraintLayout> 
 
</FrameLayout> 
Navgraph: 
fragment_win: 
fragment_lose: 
fragment_quest1: 
fragment_quest2: 
fragment_quest3: 
fragment_quest4: 
PROCEDURE TO FOLLOW IN NAVIGATION USING FRAGMENTS APP 
1) Create empty Activity 
2) Create layout folder and add “activity_main.xml” file in it 
3) How to create Navigation folder and navigation graph: 
i) 
Add dependencies in build.gradle file 
implementation("androidx.constraintlayout:constraintlayout-compose:1.0.0
alpha08") 
implementation("androidx.navigation:navigation-fragment-ktx:2.3.5") 
implementation("androidx.navigation:navigation-ui-ktx:2.3.5") 
implementation("androidx.navigation:navigation-dynamic-features
fragment:2.3.5") 
ii) 
iii) 
Create navigation folder and add nav_graph.xml in it 
Create “new destination” in nav_graph.xml then select 2 blank fragments and 
name it as “HomeFragment” and “DataFragment” 
4) Add the following steps in activity_main.xml: 
i) 
Add constraint layout 
ii) 
Drag and drop fragment container view and select “HomeFragment.kt” 
add:navGraph=”@navigation/nav_graph” 
5) Add the following steps in HomeFragment in xml: 
i) 
Add Constraint View 
ii) 
iii) 
Add Text View 
Add Button  
6) Add the following steps in DataFragment in xml: 
i) 
Add Constraint View 
ii) 
iii) 
Add Text View 
Add Button 
MainActivity:
package com.example.myapp

import android.os.Bundle
import androidx.activity.enableEdgeToEdge
import androidx.appcompat.app.AppCompatActivity

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_main)

    }
}
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <androidx.fragment.app.FragmentContainerView
        android:id="@+id/fragmentContainerView"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="409dp"
        android:layout_height="729dp"
        app:defaultNavHost="true"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.5"
        app:navGraph="@navigation/nav_graph" />

</androidx.constraintlayout.widget.ConstraintLayout>
nav_graph.xml:
<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/nav_graph"
    app:startDestination="@id/homeFragment">

    <fragment
        android:id="@+id/homeFragment"
        android:name="com.example.myapp.homeFragment"
        android:label="fragment_home"
        tools:layout="@layout/fragment_home" >
        <action
            android:id="@+id/action_homeFragment_to_dataFragment"
            app:destination="@id/dataFragment" />
    </fragment>
    <fragment
        android:id="@+id/dataFragment"
        android:name="com.example.myapp.dataFragment"
        android:label="fragment_data"
        tools:layout="@layout/fragment_data" >
        <action
            android:id="@+id/action_dataFragment_to_homeFragment"
            app:destination="@id/homeFragment" />
    </fragment>
</navigation>
HomeFragment.kt:
package com.example.myapp

import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Button
import androidx.navigation.Navigation

// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private const val ARG_PARAM1 = "param1"
private const val ARG_PARAM2 = "param2"

/**
 * A simple [Fragment] subclass.
 * Use the [homeFragment.newInstance] factory method to
 * create an instance of this fragment.
 */
class homeFragment : Fragment() {
    // TODO: Rename and change types of parameters
    private var param1: String? = null
    private var param2: String? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        arguments?.let {
            param1 = it.getString(ARG_PARAM1)
            param2 = it.getString(ARG_PARAM2)
        }
    }

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        // Inflate the layout for this fragment
        val view:View=inflater.inflate(R.layout.fragment_home, container, false)
        val btn:Button=view.findViewById(R.id.button)
        btn.setOnClickListener {
            Navigation.findNavController(view).navigate(R.id.action_homeFragment_to_dataFragment)
        }
        return view
    }

    companion object {
        /**
         * Use this factory method to create a new instance of
         * this fragment using the provided parameters.
         *
         * @param param1 Parameter 1.
         * @param param2 Parameter 2.
         * @return A new instance of fragment homeFragment.
         */
        // TODO: Rename and change types and number of parameters
        @JvmStatic
        fun newInstance(param1: String, param2: String) =
            homeFragment().apply {
                arguments = Bundle().apply {
                    putString(ARG_PARAM1, param1)
                    putString(ARG_PARAM2, param2)
                }
            }
    }
}

fragment_home.xml:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".homeFragment">
    <!-- TODO: Update blank fragment layout -->
    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView
            android:id="@+id/textView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="home fragment"
            android:textSize="24sp"
            app:layout_constraintBottom_toTopOf="@+id/button"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="0.5" />

        <Button
            android:id="@+id/button"
            android:layout_width="125dp"
            android:layout_height="69dp"
            android:text="Button"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/textView"
            app:layout_constraintVertical_bias="0.5" />
    </androidx.constraintlayout.widget.ConstraintLayout>
</FrameLayout>

DataFragment.kt:
package com.example.myapp

import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Button
import androidx.navigation.Navigation

// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private const val ARG_PARAM1 = "param1"
private const val ARG_PARAM2 = "param2"

/**
 * A simple [Fragment] subclass.
 * Use the [dataFragment.newInstance] factory method to
 * create an instance of this fragment.
 */
class dataFragment : Fragment() {
    // TODO: Rename and change types of parameters
    private var param1: String? = null
    private var param2: String? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        arguments?.let {
            param1 = it.getString(ARG_PARAM1)
            param2 = it.getString(ARG_PARAM2)
        }
    }

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        // Inflate the layout for this fragment
        val view: View = inflater.inflate(R.layout.fragment_data, container, false)
        val btn: Button = view.findViewById(R.id.button2)
        btn.setOnClickListener() {
            Navigation.findNavController(view).navigate(R.id.action_dataFragment_to_homeFragment)
        }
        return view
    }

    companion object {
        /**
         * Use this factory method to create a new instance of
         * this fragment using the provided parameters.
         *
         * @param param1 Parameter 1.
         * @param param2 Parameter 2.
         * @return A new instance of fragment dataFragment.
         */
        // TODO: Rename and change types and number of parameters
        @JvmStatic
        fun newInstance(param1: String, param2: String) =
            dataFragment().apply {
                arguments = Bundle().apply {
                    putString(ARG_PARAM1, param1)
                    putString(ARG_PARAM2, param2)
                }
            }
    }
}

fragment_data.xml:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".dataFragment">

    <!-- TODO: Update blank fragment layout -->


    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="data fragment"
            android:textSize="24sp"
            app:layout_constraintBottom_toTopOf="@+id/button2"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="0.5" />

        <Button
            android:id="@+id/button2"
            android:layout_width="124dp"
            android:layout_height="51dp"
            android:text="Button"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/textView2"
            app:layout_constraintVertical_bias="0.5" />
    </androidx.constraintlayout.widget.ConstraintLayout>
</FrameLayout>

Builde kartle:
plugins {
    alias(libs.plugins.android.application)
    alias(libs.plugins.jetbrains.kotlin.android)
}

android {
    namespace = "com.example.myapp"
    compileSdk = 35

    defaultConfig {
        applicationId = "com.example.myapp"
        minSdk = 24
        targetSdk = 34
        versionCode = 1
        versionName = "1.0"

        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            isMinifyEnabled = false
            proguardFiles(
                getDefaultProguardFile("proguard-android-optimize.txt"),
                "proguard-rules.pro"
            )
        }
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = "1.8"
    }
}

dependencies {

    implementation(libs.androidx.core.ktx)
    implementation(libs.androidx.appcompat)
    implementation(libs.material)
    implementation(libs.androidx.activity)
    implementation(libs.androidx.constraintlayout)
    implementation(libs.androidx.navigation.fragment.ktx)
    implementation(libs.androidx.navigation.ui.ktx)

    implementation("androidx.navigation:navigation-fragment-ktx:2.8.1")
    implementation("androidx.navigation:navigation-ui-ktx:2.8.1")
    implementation("androidx.navigation:navigation-dynamic-features-fragment:2.8.1")

    testImplementation(libs.junit)
    androidTestImplementation(libs.androidx.junit)
    androidTestImplementation(libs.androidx.espresso.core)
}
#include<stdio.h>
#include<string.h>

int main(){
    int n,i,j,c=0,count=0;
    char str[100]; 
    printf("Enter the string: ");
    scanf("%s", str); 

    printf("Enter the number of frames:");
    scanf("%d",&n);
    int frames[n];

    printf("Enter the frame size of the frames:\n");
    for(int i=0;i<n;i++){
        printf("Frame %d:",i);
        scanf("%d",&frames[i]);
    }

    printf("\nThe number of frames:%d\n",n);
    c = 0;
    for(int i=0;i<n;i++){
        printf("The content of the frame %d:",i);
        j=0;
        count = 0; 
        while(c < strlen(str) && j < frames[i]){
            printf("%c",str[c]);
            if(str[c]!='\0'){
                count++;
            }
            c=c+1;
            j=j+1;
        }
        printf("\nSize of frame %d: %d\n\n",i,count);
    }
    return 0;
}
import java.sql.*;
import java.util.Scanner;

public class BookDatabaseApp {

    private static final String URL = "jdbc:mysql://localhost:3306/books";
    private static final String USER = "root";
    private static final String PASSWORD = "ramesh";

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        System.out.println("Enter Book ID: ");
        int id = scanner.nextInt();
        scanner.nextLine();

        System.out.println("Enter Book Title: ");
        String title = scanner.nextLine();

        System.out.println("Enter Book Author: ");
        String author = scanner.nextLine();

        System.out.println("Enter Book Publisher: ");
        String publisher = scanner.nextLine();

        System.out.println("Enter Book Price: ");
        double price = scanner.nextDouble();

        insertBook(id, title, author, publisher, price);
        scanner.close();
    }

    public static void insertBook(int id, String title, String author, String publisher, double price) {
        try (Connection conn = DriverManager.getConnection(URL, USER, PASSWORD);
             PreparedStatement pstmt = conn.prepareStatement("INSERT INTO book (id, title, author, publisher, price) VALUES (?, ?, ?, ?, ?)")) {
            pstmt.setInt(1, id);
            pstmt.setString(2, title);
            pstmt.setString(3, author);
            pstmt.setString(4, publisher);
            pstmt.setDouble(5, price);
            System.out.println(pstmt.executeUpdate() + " row(s) inserted.");
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
import java.io.File;

import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;

import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.DefaultHandler;

public class SAXValidator {
    public static void main(String[] args) {

        String xmlFilePath = "C:\\Users\\91630\\OneDrive\\Desktop\\Web_technologies_lab\\Book\\book.xml";
        String xsdFilePath = "C:\\Users\\91630\\OneDrive\\Desktop\\Web_technologies_lab\\Book\\book.xsd";

        File xmlFile = new File(xmlFilePath);
        File xsdFile = new File(xsdFilePath);

        try {

            SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
            Schema schema = schemaFactory.newSchema(xsdFile);

            SAXParserFactory saxFactory = SAXParserFactory.newInstance();
            saxFactory.setSchema(schema);

            SAXParser parser = saxFactory.newSAXParser();
            parser.parse(xmlFile, new DefaultHandler() {
                @Override
                public void error(SAXParseException e) {
                    System.out.println("Validation Error: " + e.getMessage());
                }
            });
            System.out.println("XML file is valid according to the schema.");
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = factory.newDocumentBuilder();
            org.w3c.dom.Document document = builder.parse(xmlFile);
            NodeList nodeList = document.getElementsByTagName("book");
            for (int i = 0; i < nodeList.getLength(); i++) {
                Node node = nodeList.item(i);
                System.out.println("Element Content: " + node.getTextContent());
            }
        } catch (Exception e) {

            System.out.println("Validation error: " + e.getMessage());
        }
    }
}

book.xml

<?xml version="1.0" encoding="UTF-8"?>
<book>
    <Name>Arun</Name>
    <Roll>506</Roll>
</book>

book.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <xsd:element name="book">
        <xsd:complexType>
            <xsd:sequence>
                <xsd:element name="Name" type="xsd:string"/>
                <xsd:element name="Roll" type="xsd:integer"/>
            </xsd:sequence>
        </xsd:complexType>
    </xsd:element>
</xsd:schema>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>jQuery Events Demo</title>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <style>
        /* CSS for styling buttons and message */
        body {
            font-family: Arial, sans-serif;
            margin: 20px;
        }
        
        button {
            padding: 10px 20px;
            font-size: 16px;
            margin: 10px;
            cursor: pointer;
        }

        #message {
            font-size: 20px;
            color: blue;
            margin-top: 20px;
        }

        input[type="text"] {
            padding: 10px;
            margin: 10px 0;
            font-size: 16px;
            width: 300px;
        }
    </style>
</head>
<body>

    <h1>jQuery Events Demo</h1>

    <button id="clickButton">Click Me</button>
    <button id="dblClickButton">Double Click Me</button>
    <button id="hoverButton">Hover Over Me</button>
    <input type="text" id="focusInput" placeholder="Click or focus here">
    
    <div id="message"></div>

    <script>
        // jQuery event demonstrations
        $(document).ready(function() {

            // Click event
            $('#clickButton').click(function() {
                $('#message').text('Button Clicked!').css('color', 'green');
            });

            // Double click event
            $('#dblClickButton').dblclick(function() {
                $('#message').text('Button Double Clicked!').css('color', 'purple');
            });

            // Hover event (mouseenter and mouseleave)
            $('#hoverButton').hover(
                function() {  // mouseenter
                    $('#message').text('Mouse Hovering!').css('color', 'orange');
                },
                function() {  // mouseleave
                    $('#message').text('Mouse Left!').css('color', 'blue');
                }
            );

            // Focus event on input field
            $('#focusInput').focus(function() {
                $(this).css('background-color', '#e0f7fa');  // Change background color on focus
                $('#message').text('Input Focused!').css('color', 'brown');
            });

            // Blur event (when the input field loses focus)
            $('#focusInput').blur(function() {
                $(this).css('background-color', 'white');  // Reset background color
                $('#message').text('Input Lost Focus!').css('color', 'red');
            });
        });
    </script>

</body>
</html>
import java.io.File;

import javax.xml.XMLConstants;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;

import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.DefaultHandler;

public class SAXValidator {
    public static void main(String[] args) {

        String xmlFilePath = "C:\\Users\\91630\\OneDrive\\Desktop\\Web_technologies_lab\\Book\\book.xml";
        String xsdFilePath = "C:\\Users\\91630\\OneDrive\\Desktop\\Web_technologies_lab\\Book\\book.xsd";

        File xmlFile = new File(xmlFilePath);
        File xsdFile = new File(xsdFilePath);

        try {

            SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
            Schema schema = schemaFactory.newSchema(xsdFile);

            SAXParserFactory saxFactory = SAXParserFactory.newInstance();
            saxFactory.setSchema(schema);

            SAXParser parser = saxFactory.newSAXParser();
            parser.parse(xmlFile, new DefaultHandler() {
                @Override
                public void error(SAXParseException e) {
                    System.out.println("Validation Error: " + e.getMessage());
                }
            });
            System.out.println("XML file is valid according to the schema.");

        } catch (Exception e) {

            System.out.println("Validation error: " + e.getMessage());
        }
    }
}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>jQuery Selectors Demo</title>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <style>
        .highlight {
            background-color: yellow;
        }
        #message {
            font-size: 20px;
            color: blue;
        }
    </style>
</head>
<body>

    <h1>jQuery Selectors Demo</h1>

    <p>This is a <span class="highlight">simple</span> paragraph with some text.</p>
    <p id="first-paragraph">This is the first paragraph.</p>
    <p>This is the second paragraph.</p>

    <div id="container">
        <div class="box">Box 1</div>
        <div class="box">Box 2</div>
        <div class="box">Box 3</div>
    </div>

    <input type="text" placeholder="Text input">
    <input type="password" placeholder="Password input">
    <input type="button" value="Click me">

    <button id="showMessage">Click to Show Message</button>
    
    <div id="message"></div>

    <script>
        $(document).ready(function() {

            // Select by tag name
            $('p').css('color', 'green');  // All <p> elements will turn green

            // Select by class name
            $('.highlight').css('font-weight', 'bold');  // Highlights text within .highlight class

            // Select by ID
            $('#first-paragraph').css('font-size', '18px');  // Changes font size of #first-paragraph

            // Select by attribute
            $('[type="text"]').css('border', '2px solid red');  // Selects text input and adds a border

            // Select all children of a parent (box divs inside #container)
            $('#container .box').css('background-color', '#f0f0f0');  // Applies background to all .box elements inside #container

            // Select first element
            $('p:first').css('color', 'purple');  // First <p> element turns purple

            // Select last element
            $('p:last').css('color', 'orange');  // Last <p> element turns orange

            // Select hidden elements
            $('input[type="password"]').css('border', '2px dashed green');  // Highlight password input

            // Select multiple classes
            $('.box.highlight').css('border', '2px solid blue');  // Selects .box and .highlight elements

            // Demonstrate on button click
            $('#showMessage').click(function() {
                $('#message').text('You clicked the button!').fadeIn().css('color', 'red');
            });

        });
    </script>

</body>
</html>
import jakarta.servlet.*;
import jakarta.servlet.http.*;
import java.io.*;
import jakarta.servlet.annotation.*;

@WebServlet("/hitcounter")
public class HitCounterServlet extends HttpServlet {
    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // Set the content type to HTML
        response.setContentType("text/html");

        // Get the writer to send the response
        PrintWriter out = response.getWriter();

        // Get the cookies from the request
        Cookie[] cookies = request.getCookies();
        int hitCount = 0;

        // Check if there's a cookie for 'hitCount'
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                if ("hitCount".equals(cookie.getName())) {
                    hitCount = Integer.parseInt(cookie.getValue());
                    break;
                }
            }
        }

        // Increment the hit count
        hitCount++;

        // Create or update the 'hitCount' cookie
        Cookie hitCountCookie = new Cookie("hitCount", String.valueOf(hitCount));
        hitCountCookie.setMaxAge(60 * 60 * 24 * 7); // 1 week expiry time
        response.addCookie(hitCountCookie);

        // Generate the HTML response
        out.println("<html>");
        out.println("<head><title>Hit Counter</title></head>");
        out.println("<body>");
        out.println("<h1>Page hit count: " + hitCount + "</h1>");
        out.println("</body>");
        out.println("</html>");
    }
}
package hitcount1;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class count1
 */
@WebServlet("/count1")
public class count1 extends HttpServlet {
	private static final long serialVersionUID = 1L;
	//public int count;
	public int count;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public count1() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Servlet#init(ServletConfig)
	 */
	public void init(ServletConfig config) throws ServletException {
		 count=0;
		// TODO Auto-generated method stub
	}

	/**
	 * @see Servlet#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		response.setContentType("text/html");
		//response.getWriter().append("Served at: ").append(request.getContextPath());
		PrintWriter out =response.getWriter();
		
		count++;
		out.println("<h1> the count will be incremented </h1>");
		out.println("<h1>count :"+count+"</h1>");
	}

}
//login.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Login Page</title>
</head>
<body>
    <h2>Login Page</h2>
    <form action="LoginServlet" method="post">
        <label for="username">Enter Username:</label>
        <input type="text" id="username" name="username" required>
        <br><br>
        <input type="submit" value="Login">
    </form>
</body>
</html>


//LoginServlet.java

import java.io.IOException;
import java.io.PrintWriter;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;

@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        // Get the username from the request
        String username = request.getParameter("username");

        if (username != null && !username.isEmpty()) {
            // Create a session and store the username
            HttpSession session = request.getSession();
            session.setAttribute("username", username);

            // Redirect to the welcome page
            response.sendRedirect("WelcomeServlet");
        } else {
            out.println("<h2>Username cannot be empty. Please try again.</h2>");
        }

        out.close();
    }
}


//WelcomeServlet.java

import java.io.IOException;
import java.io.PrintWriter;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;

@WebServlet("/WelcomeServlet")
public class WelcomeServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        // Get the existing session (if any)
        HttpSession session = request.getSession(false);

        if (session != null) {
            // Retrieve the username from the session
            String username = (String) session.getAttribute("username");
            if (username != null) {
                out.println("<h2>Welcome, " + username + "!</h2>");
                out.println("<a href='LogoutServlet'>Logout</a>");
            } else {
                out.println("<h2>No user found in session.</h2>");
            }
        } else {
            out.println("<h2>No session found. Please login again.</h2>");
        }

        out.close();
    }
}


//LogoutServlet.java

import java.io.IOException;
import java.io.PrintWriter;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;

@WebServlet("/LogoutServlet")
public class LogoutServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        // Invalidate the session
        HttpSession session = request.getSession(false);
        if (session != null) {
            session.invalidate();
        }

        out.println("<h2>You have been logged out successfully!</h2>");
        out.println("<a href='login.html'>Login again</a>");
        out.close();
    }
}
//login.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Login Page</title>
</head>
<body>
    <h2>Login Page</h2>
    <form action="WelcomeServlet" method="get">
        <label for="username">Enter Username:</label>
        <input type="text" id="username" name="username" required>
        <br><br>
        <input type="submit" value="Login">
    </form>
</body>
</html>


//WelcomeServlet.java

import java.io.IOException;
import java.io.PrintWriter;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

@WebServlet("/WelcomeServlet")
public class WelcomeServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        // Get the username from the request
        String username = request.getParameter("username");

        if (username != null && !username.isEmpty()) {
            // Display the welcome message
            out.println("<h2>Welcome, " + username + "!</h2>");

            // URL Rewriting - Append the username to the next link
            out.println("<a href='DashboardServlet?username=" + username + "'>Go to Dashboard</a>");
        } else {
            out.println("<h2>Username is missing. Please go back and enter your username.</h2>");
        }

        out.close();
    }
}


//DashboardServlet.java

import java.io.IOException;
import java.io.PrintWriter;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

@WebServlet("/DashboardServlet")
public class DashboardServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        // Retrieve the username from the rewritten URL
        String username = request.getParameter("username");

        if (username != null && !username.isEmpty()) {
            out.println("<h2>Welcome to your dashboard, " + username + "!</h2>");
        } else {
            out.println("<h2>Invalid access. Username not found!</h2>");
        }

        out.close();
    }
}
//login.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Login Page</title>
</head>
<body>
    <h2>Login</h2>
    <form action="LoginServlet" method="post">
        <label for="username">Username:</label>
        <input type="text" id="username" name="username" required><br><br>
        
        <label for="password">Password:</label>
        <input type="password" id="password" name="password" required><br><br>
        
        <!-- Hidden field to send a welcome message on successful login -->
        <input type="hidden" name="welcomeMessage" value="Welcome to the site!">
        
        <input type="submit" value="Login">
    </form>
</body>
</html>


//LoginServlet.java

import java.io.IOException;
import java.io.PrintWriter;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        String welcomeMessage = request.getParameter("welcomeMessage"); // Getting hidden field data
        
        // Simple login validation (for demonstration only)
        if ("user".equals(username) && "password".equals(password)) {
            out.println("<h2>Login Successful!</h2>");
            out.println("<p>" + welcomeMessage + "</p>");
            out.println("<p>Welcome, " + username + "!</p>");
        } else {
            out.println("<h2>Login Failed</h2>");
            out.println("<p>Invalid username or password. Please try again.</p>");
        }
        
        out.close();
    }
}
MainActivity.kt:
import android.content.Intent
import android.net.Uri
import android.os.Bundle
import androidx.activity.enableEdgeToEdge
import androidx.appcompat.app.AppCompatActivity
import com.google.android.material.floatingactionbutton.FloatingActionButton

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_main)

        //implicit
        val url = "https://www.google.com"
        val implicitButton : FloatingActionButton = findViewById(R.id.floatingActionButton)
        implicitButton.setOnClickListener{
            val implicitIntent =Intent(Intent.ACTION_VIEW, Uri.parse(url))
            startActivity(implicitIntent)
        }
    }
}
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Welcome to MAD Lab"
        android:textSize="24sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.5"
        tools:ignore="HardcodedText" />

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/floatingActionButton"
        android:layout_width="56dp"
        android:layout_height="76dp"
        android:clickable="true"
        app:fabSize="auto"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView"
        app:layout_constraintVertical_bias="0.5"
        app:maxImageSize="30dp"
        app:srcCompat="@drawable/baseline_add_24"
        tools:ignore="ContentDescription,KeyboardInaccessibleWidget,SpeakableTextPresentCheck,SpeakableTextPresentCheck"/>

</androidx.constraintlayout.widget.ConstraintLayout>
response = zoho.books.getRecordsByID("Contacts","60027666993","1717348000001708124","zoho_books");
//info response;
contact = response.get("contact").get("bank_accounts");
//info contact;
for each  rec in contact
{
	account_number = rec.get("account_number");
	info account_number;
	IFSC_CODE  = rec.get("routing_number");
}

//////////////
//////////////////////

headers = map();
headers.put("Content-Type", "application/json");
headers.put("api-key", "4c7e1f57-ae9b-411d-bf8a-079b37cd7dab");
headers.put("account-id", "0c85c3939596/9eeccde7-d9ae-4948-845f-3b0286bdad55");


data = map();
data.put("task_id", "task-123");
data.put("group_id", "group-1234");

bank_data = map();
bank_data.put("bank_account_no", "10087431715");
bank_data.put("bank_ifsc_code", "IDFB0080221");
bank_data.put("nf_verification", false);
data.put("data", bank_data);
payload = data.toString();


validate_bank_account = invokeUrl
[
    url : "https://eve.idfy.com/v3/tasks/async/verify_with_source/validate_bank_account"
    type : POST
    parameters : payload
    headers : headers
];

//info validate_bank_account;
request_id = validate_bank_account.get("request_id");
//info request_id;
////////////////////////
/////////////////////////////////////////
get_tasks_data = invokeUrl
[
    url : "https://eve.idfy.com/v3/tasks?request_id="+request_id+""
    type : GET
    headers : headers
];
info get_tasks_data;
 import java.sql.Connection;
 import java.sql.ResultSet;
 import java.sql.Statement;
 import  java.sql.SQLException;
 import java.sql.DriverManager;
  
    public class JdbcExamplePrg1 {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
  
        String QUERY = "select * from book where id <46";
      
        Class.forName("com.mysql.cj.jdbc.Driver"); 
  
        try {
		
  Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/books","root","ramesh");
        
                Statement statemnt1 = conn.createStatement();
              
          ResultSet rs1 = statemnt1.executeQuery(QUERY); 
                                      
                    while(rs1.next())
                    {
                        int id = rs1.getInt(1);
                        String title = rs1.getString(2);
                        String author = rs1.getString(3);
                        String publisher = rs1.getString(4);
                        int price = rs1.getInt(5);

                    System.out.println(id + ","+title+ ","+author+ ","+publisher +","+price );
                    }
                 
        }
        catch(SQLException e) {
            e.printStackTrace();
        }
       }
    }
MainActivity.kt:
import android.content.Intent
import android.os.Bundle
import android.widget.TextView
import androidx.activity.enableEdgeToEdge
import androidx.appcompat.app.AppCompatActivity
import com.google.android.material.floatingactionbutton.FloatingActionButton

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_main)

        //Explicit Intent
        var t: TextView = findViewById(R.id.textView)
        var f: FloatingActionButton = findViewById(R.id.floatingActionButton)
        f.setOnClickListener()
        {
            var i = Intent(this, MainActivity2::class.java)
            startActivity(i)
        }
    }
}
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Welcome to MAD Lab"
        android:textSize="24sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.5"
        tools:ignore="HardcodedText" />

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/floatingActionButton"
        android:layout_width="56dp"
        android:layout_height="76dp"
        android:clickable="true"
        app:fabSize="auto"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView"
        app:layout_constraintVertical_bias="0.5"
        app:maxImageSize="30dp"
        app:srcCompat="@drawable/baseline_add_24"
        tools:ignore="ContentDescription,KeyboardInaccessibleWidget,SpeakableTextPresentCheck,SpeakableTextPresentCheck"/>
</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity2.kt:
import android.os.Bundle
import androidx.activity.enableEdgeToEdge
import androidx.appcompat.app.AppCompatActivity

class MainActivity2 : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_main2)
    }
}
activity_main2.xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity2">
    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="CSE-A"
        android:textSize="34sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.5"
        tools:ignore="HardcodedText" />
</androidx.constraintlayout.widget.ConstraintLayout>
import java.sql.*;

public class UpdateEmpAndAccounts {
    public static void main(String[] args) {
        // Database credentials
        String jdbcURL = "jdbc:mysql://localhost:3306/nehal";
        String username = "root";
        String password = "nehal@123";

        // Stored procedure
        String storedProcedureCall = "{CALL UpdateEmpAndAccounts(?, ?, ?)}";

        // Input values
        int empId = 5; // Employee ID to update
        String newName = "John Updated"; // New name
        int newBalance = 1200; // New account balance (integer)

        try (Connection connection = DriverManager.getConnection(jdbcURL, username, password);
             CallableStatement callableStatement = connection.prepareCall(storedProcedureCall)) {

            // Set parameters for the stored procedure
            callableStatement.setInt(1, empId);
            callableStatement.setString(2, newName);
            callableStatement.setInt(3, newBalance);

            // Execute the stored procedure
            callableStatement.execute();

            System.out.println("Employee name and account balance updated successfully!");

        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
//run procedure code in mysql
DELIMITER $$

CREATE PROCEDURE UpdateEmpAndAccounts(
    IN empId INT,           -- Employee ID to identify the record
    IN newName VARCHAR(255), -- New name for the employee
    IN newBalance INT        -- New balance for the account
)
BEGIN
    -- Update the name in the emp table
    UPDATE emp
    SET name = newName
    WHERE id = empId;

    -- Update the balance in the accounts table
    UPDATE accounts
    SET balance = newBalance
    WHERE id = empId;
END $$

DELIMITER ;
//status check for procedure
SHOW PROCEDURE STATUS WHERE Db = 'nehal';
import java.sql.*;

public class TransactionExample {

    public static void main(String[] args) {
        // Database URL and credentials
        String dbUrl = "jdbc:mysql://localhost:3306/nehal";
        String user = "root";
        String password = "nehal@123";

        Connection conn = null;

        try {
            // Establish connection
            conn = DriverManager.getConnection(dbUrl, user, password);

            // Disable auto-commit mode
            conn.setAutoCommit(false);

            // SQL queries
            String deductMoney = "UPDATE accounts SET balance = balance - ? WHERE id = ?";
            String addMoney = "UPDATE accounts SET balance = balance + ? WHERE id = ?";

            try (
                PreparedStatement stmt1 = conn.prepareStatement(deductMoney);
                PreparedStatement stmt2 = conn.prepareStatement(addMoney)
            ) {
                // Deduct money from account 1
                stmt1.setDouble(1, 500.0); // Deduct $500
                stmt1.setInt(2, 1);        // From account ID 1
                stmt1.executeUpdate();

                // Add money to account 2
                stmt2.setDouble(1, 500.0); // Add $500
                stmt2.setInt(2, 2);        // To account ID 2
                stmt2.executeUpdate();

                // Commit the transaction
                conn.commit();
                System.out.println("Transaction successful!");
            } catch (SQLException e) {
                // Rollback the transaction in case of an error
                if (conn != null) {
                    conn.rollback();
                    System.out.println("Transaction rolled back due to an error.");
                }
                e.printStackTrace();
            }

        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            try {
                if (conn != null) {
                    // Re-enable auto-commit mode
                    conn.setAutoCommit(true);
                    conn.close();
                }
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}
import java.sql.*;

public class ScrollableAndUpdatableResultSetExample {

    public static void main(String[] args) {
        // Database URL and credentials
        String dbUrl = "jdbc:mysql://localhost:3306/nehal";
        String user = "root";
        String password = "nehal@123";

        // SQL query
        String sql = "SELECT id, name FROM emp";

        try (Connection conn = DriverManager.getConnection(dbUrl, user, password)) {
            // Create a statement with scrollable and updatable result set
            Statement stmt = conn.createStatement(
                ResultSet.TYPE_SCROLL_INSENSITIVE,  // Scrollable
                ResultSet.CONCUR_UPDATABLE          // Updatable
            );

            // Execute the query and get the result set
            ResultSet rs = stmt.executeQuery(sql);

            // Move to the last row
            if (rs.last()) {
                System.out.println("Last row: " + rs.getInt("id") + ", " + rs.getString("name"));
            }

            // Move to the first row
            if (rs.first()) {
                System.out.println("First row: " + rs.getInt("id") + ", " + rs.getString("name") );
            }

            // Move to the second row (using absolute position)
            if (rs.absolute(2)) {
                System.out.println("Second row: " + rs.getInt("id") + ", " + rs.getString("name") );
            }

            // Update a column in the result set
            if (rs.absolute(1)) {
                rs.updateString("name", "ramesh"); // Update name for the first row
                rs.updateRow(); // Apply the update to the database
                System.out.println("Updated first row: " + rs.getInt("id") + ", " + rs.getString("name"));
            }

        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
import java.sql.*;

public class ResultSetMetadataExample {

    public static void main(String[] args) {
        // Database URL and credentials
        String dbUrl = "jdbc:mysql://localhost:3306/nehal";
        String user = "root";
        String password = "nehal@123";

        // SQL query
        String sql = "SELECT id, name FROM emp";

        try (Connection conn = DriverManager.getConnection(dbUrl, user, password);
             Statement stmt = conn.createStatement();
             ResultSet rs = stmt.executeQuery(sql)) {
             
            // Get the ResultSetMetaData
            ResultSetMetaData rsMetaData = rs.getMetaData();
            
            // Get the number of columns in the result set
            int columnCount = rsMetaData.getColumnCount();
            
            System.out.println("Number of Columns: " + columnCount);
            
            // Print column names and types
            for (int i = 1; i <= columnCount; i++) {
                String columnName = rsMetaData.getColumnName(i);
                String columnType = rsMetaData.getColumnTypeName(i);
                
                System.out.println("Column " + i + ": " + columnName + " (" + columnType + ")");
            }
            
            // Iterate through the result set and print data
            while (rs.next()) {
                System.out.println("ID: " + rs.getInt("id") + ", Name: " + rs.getString("name"));
            }

        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
const person = {
    name: "Alice",
    age: 25,
    greet: function() {
        console.log(`Hi, I'm ${this.name}.`);
    }
};
console.log(person.name);
person.greet();

const car = new Object();
car.brand = "Toyota";
car.model = "Corolla";
car.year = 2021;
console.log(car.brand);

function Book(title, author) {
    this.title = title;
    this.author = author;
    this.getInfo = function() {
        return `${this.title} by ${this.author}`;
    };
}
const book1 = new Book("1984", "George Orwell");
console.log(book1.getInfo());

class Animal {
    constructor(type, sound) {
        this.type = type;
        this.sound = sound;
    }
    makeSound() {
        console.log(this.sound);
    }
}

const cat = new Animal("Cat", "Meow");
cat.makeSound();

const student = {
    name: "Bob",
    grade: "A",
    subjects: ["Math", "Science"]
};
console.log(student.subjects[0]);
const fruits = ["Apple", "Banana", "Orange", "Mango", "Grapes"];

console.log("Original Array:", fruits);

// Using slice()
const slicedFruits = fruits.slice(1, 4);
console.log("\nUsing slice:");
console.log("Sliced Array:", slicedFruits); 
console.log("After slice, Original Array:", fruits); 

// Using splice()
const splicedFruits = fruits.splice(2, 2, "Pineapple", "Strawberry");
console.log("\nUsing splice:");
console.log("Removed Elements:", splicedFruits);
console.log("After splice, Modified Array:", fruits);
//Bookstore.dtd
<!ELEMENT bookstore (book+)>
<!ELEMENT book (title, author, year, price)>
<!ELEMENT title (#PCDATA)>
<!ELEMENT author (#PCDATA)>
<!ELEMENT year (#PCDATA)>
<!ELEMENT price (#PCDATA)>
<!ATTLIST book category CDATA #REQUIRED>
 //anyname.xml
                 <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE bookstore SYSTEM "bookstore.dtd">
<bookstore>
    <book category="fiction">
        <title>Harry Potter</title>
        <author>J.K. Rowling</author>
        <year>1997</year>
        <price>29.99</price>
    </book>
    <book category="non-fiction">
        <title>Sapiens</title>
        <author>Yuval Noah Harari</author>
        <year>2014</year>
        <price>19.99</price>
    </book>
</bookstore>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE bookstore [
    <!ELEMENT bookstore (book+)>
    <!ELEMENT book (title, author, year, price)>
    <!ELEMENT title (#PCDATA)>
    <!ELEMENT author (#PCDATA)>
    <!ELEMENT year (#PCDATA)>
    <!ELEMENT price (#PCDATA)>
    <!ATTLIST book category CDATA #REQUIRED>
]>
<bookstore>
    <book category="fiction">
        <title>Harry Potter</title>
        <author>J.K. Rowling</author>
        <year>1997</year>
        <price>29.99</price>
    </book>
    <book category="non-fiction">
        <title>Sapiens</title>
        <author>Yuval Noah Harari</author>
        <year>2014</year>
        <price>19.99</price>
    </book>
</bookstore>

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class DatabaseOperations {
    public static void main(String[] args) throws ClassNotFoundException {
        String jdbcUrl = "jdbc:oracle:thin:@//localhost:1521/XE";
        String user = "system";
        String password = "hari123";
        
        try {
            // Load Oracle JDBC Driver
            Class.forName("oracle.jdbc.driver.OracleDriver");

            // Establish connection
            Connection connection = DriverManager.getConnection(jdbcUrl, user, password);
            System.out.println("Connection established successfully");

            // 1. Insert Operation with PreparedStatement
            String insertSQL = "INSERT INTO Users (username, password, email) VALUES (?, ?, ?)";
            PreparedStatement insertStatement = connection.prepareStatement(insertSQL);
            insertStatement.setString(1, "hari");
            insertStatement.setString(2, "secure@123");
            insertStatement.setString(3, "john@example.com");
            int insertResult = insertStatement.executeUpdate();
            System.out.println(insertResult + " row(s) inserted.");
            insertStatement.close();

            // 2. Select Operation with PreparedStatement
            String selectSQL = "SELECT * FROM Users";
            PreparedStatement selectStatement = connection.prepareStatement(selectSQL);
            ResultSet rs = selectStatement.executeQuery();
            while (rs.next()) {
                System.out.println("Username: " + rs.getString("username") +
                                   ", Password: " + rs.getString("password") +
                                   ", Email: " + rs.getString("email"));
            }
            selectStatement.close();

            // 3. Update Operation with PreparedStatement
            String updateSQL = "UPDATE Users SET email = ? WHERE username = ?";
            PreparedStatement updateStatement = connection.prepareStatement(updateSQL);
            updateStatement.setString(1, "john_new@example.com");
            updateStatement.setString(2, "john_doe");
            int updateResult = updateStatement.executeUpdate();
            System.out.println(updateResult + " row(s) updated.");
            updateStatement.close();

            // Close the connection
            connection.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
const stack = [];

function push(element) {
    stack.push(element);
}

function pop() {
    if (isEmpty()) {
        console.log("Stack is empty.");
        return null;
    }
    return stack.pop();
}

function peek() {
    if (isEmpty()) {
        console.log("Stack is empty.");
        return null;
    }
    return stack[stack.length - 1];
}

function isEmpty() {
    return stack.length === 0;
}

function size() {
    return stack.length;
}

function printStack() {
    console.log(stack);
}

console.log("Push operations:");
push(10);
push(20);
push(30);
printStack();

console.log("\nPeek operation:");
console.log(peek());

console.log("\nPop operations:");
console.log(pop());
console.log(pop());
printStack();

console.log("\nCheck if empty:");
console.log(isEmpty());

console.log("\nStack size:");
console.log(size());
import java.util.*;

public class PotionBrewer {
    private static final Map<String, List<List<String>>> recipes = new HashMap<>();
    private static final Map<String, Integer> memoization = new HashMap<>();
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int numRecipes = scanner.nextInt();
        scanner.nextLine();
        for (int i = 0; i < numRecipes; i++) {
            String[] recipeParts = scanner.nextLine().split("=");
            String potion = recipeParts[0].trim();
            String[] ingredients = recipeParts[1].split("\\+");
            recipes.computeIfAbsent(potion, k -> new ArrayList<>()).add(Arrays.asList(ingredients));
        }
        String targetPotion = scanner.nextLine();
        scanner.close();
        int result = calculateMinimumOrbs(targetPotion);
        System.out.println(result);
    }
    private static int calculateMinimumOrbs(String potion) {
        if(!recipes.containsKey(potion)){
            return 0;
        }
        if(memoization.containsKey(potion)){
            return memoization.get(potion);
        }
        int minOrbs = Integer.MAX_VALUE;
        for (List<String> recipe : recipes.get(potion)){
            int orbsRequired = recipe.size() - 1;
            for(String ingredient : recipe){
                orbsRequired += calculateMinimumOrbs(ingredient);
            }
            minOrbs = Math.min(minOrbs, orbsRequired);
        }
        memoization.put(potion, minOrbs);
        return minOrbs;
    }
}

attachment_resp = zoho.crm.getRelatedRecords("Attachments", "Token_Redemption", record_id);
// 			info attachment_resp;

for each file in attachment_resp
{
  id = file.get("id");
  info id;
  download_attachment = invokeurl
  [
    url: "https://www.zohoapis.eu/crm/v7/Token_Redemption/"+record_id+"/Attachments/"+id
    type: GET
    connection:"zoho_crm"
  ];
  info download_attachment;

  //download_attachment.setParamName("file");
  download_attachment.setParamName("attachment"); /// must include ///

  attach_to_bill = invokeUrl
  [
    url: "https://www.zohoapis.eu/books/v3/bills/412422000007051030/attachment?organization_id="+organization_id
    type: POST
    files: download_attachment
    connection: "zoho_books"
  ];
  info attach_to_bill;
}
attachment_resp = zoho.crm.getRelatedRecords("Attachments", "Token_Redemption", record_id);
// 			info attachment_resp;

for each file in attachment_resp
{
  id = file.get("id");
  info id;
  download_attachment = invokeurl
  [
    url: "https://www.zohoapis.eu/crm/v7/Token_Redemption/"+record_id+"/Attachments/"+id
    type: GET
    connection:"zoho_crm"
  ];
  info download_attachment;
}
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class DatabaseOperations {
    public static void main(String[] args) throws ClassNotFoundException {
        String jdbcUrl = "jdbc:oracle:thin:@//localhost:1521/XE"; // Corrected URL
        String user = "system";
        String password = "hari123";
        
        try {
            // Load Oracle JDBC Driver
            Class.forName("oracle.jdbc.driver.OracleDriver");

            // Establish connection
            Connection connection = DriverManager.getConnection(jdbcUrl, user, password);
            System.out.println("Connection established successfully");

            // Create Statement object
            Statement statement = connection.createStatement();

            // 1. Insert Operation
            String insertSQL = "INSERT INTO Users (username, password, email) VALUES ('hari', 'secure@123', 'john@example.com')";
            int insertResult = statement.executeUpdate(insertSQL);
            System.out.println(insertResult + " row(s) inserted.");

            // 2. Select Operation
            String selectSQL = "SELECT * FROM Users";
            ResultSet rs = statement.executeQuery(selectSQL);
            while (rs.next()) {
                System.out.println("UserName: " + rs.getString("username") + ", Password: " + rs.getString("password") +
                                   ", Email: " + rs.getString("email"));
            }

            // 3. Update Operation
            String updateSQL = "UPDATE Users SET email = 'john_new@example.com' WHERE username = 'john_doe'";
            int updateResult = statement.executeUpdate(updateSQL);
            System.out.println(updateResult + " row(s) updated.");

            // Close the resources
            statement.close();
            connection.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
import java.util.*;

public class Main {
    
   public static void bst(double[] p, double[] q, int n) {
    double[][] w = new double[n + 1][n + 1];
    double[][] c = new double[n + 1][n + 1];
    int[][] r = new int[n + 1][n + 1];

    // Initialization
    for (int i = 0; i <= n; i++) {
        w[i][i] = q[i];
        c[i][i] = 0;
        r[i][i] = 0;
    }

    // Building matrices
    for (int m = 1; m <= n; m++) {
        for (int i = 0; i <= n - m; i++) {
            int j = i + m;
            w[i][j] = w[i][j - 1] + p[j] + q[j];
            double mincost = Double.MAX_VALUE;
            int root = -1;

            for (int k = (i < j - 1 ? r[i][j - 1] : i); k <= (j > i + 1 ? r[i + 1][j] : j); k++) {
                double cost = (i <= k - 1 ? c[i][k - 1] : 0) + (k <= j ? c[k][j] : 0) + w[i][j];
                if (cost < mincost) {
                    mincost = cost;
                    root = k;
                }
            }

            c[i][j] = mincost;
            r[i][j] = root;
        }
    }

    // Print W, C, R values
    printDiagonalMatrices(w, c, r, n);

    // Final output
    System.out.println("\nMinimum cost: " + c[0][n]);
    System.out.println("Weight : " + w[0][n]);
}

// Helper method to print W, C, R values in the desired format
public static void printDiagonalMatrices(double[][] w, double[][] c, int[][] r, int n) {
    System.out.println("Diagonal Representation of W, C, R Matrices:");

    for (int d = 0; d <= n; d++) { // d = j - i
        System.out.println("\nFor j - i = " + d + ":");
        for (int i = 0; i <= n - d; i++) {
            int j = i + d;
            System.out.printf("W[%d][%d] = %.2f, C[%d][%d] = %.2f, R[%d][%d] = %d\n", 
                              i, j, w[i][j], i, j, c[i][j], i, j, r[i][j]);
        }
    }
}


    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the number of keys: ");
        int n = sc.nextInt();

        double[] p = new double[n + 1];
        double[] q = new double[n + 1];

        System.out.println("Enter probabilities for the keys:");
        for (int i = 1; i <= n; i++) {
            System.out.print("p[" + i + "]: ");
            p[i] = sc.nextDouble();
        }

        System.out.println("Enter probabilities for the dummy keys:");
        for (int i = 0; i <= n; i++) {
            System.out.print("q[" + i + "]: ");
            q[i] = sc.nextDouble();
        }

        bst(p, q, n);
    }
}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Nested Objects in JavaScript</title>
</head>
<body>
 
<h1>JavaScript Nested Objects</h1>
 
<script>
    const student = {
        name: "John Doe",
        age: 21,
        address: {
            street: "123 Main St",
            city: "Springfield",
            zip: "12345"
        },
        courses: {
            math: {
                teacher: "Mrs. Smith",
                grade: "A"
            },
            science: {
                teacher: "Mr. Brown",
                grade: "B"
            }
        },
        scores: {
            math: 95,
            science: 88,
            english: 92
        }
    };
 
   
    console.log("Student's Name:", student.name);
    console.log("City:", student.address.city);
    console.log("Math Teacher:", student.courses.math.teacher);
 
 
    student.address.zip = "54321";
    console.log("Updated Zip Code:", student.address.zip);
 
    
    student.courses.history = {
        teacher: "Ms. Green",
        grade: "A-"
    };
    console.log("Added History Course:", student.courses.history);
 
 
    delete student.scores.english;
    console.log("Scores after deletion:", student.scores);
</script>
 
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Navbar with Dropdown</title>
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
  
  <!-- Navbar -->
  <nav class="navbar navbar-expand-lg navbar-light bg-light">
    <div class="container-fluid">
      <a class="navbar-brand" href="#">Navbar</a>
      <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
      <div class="collapse navbar-collapse" id="navbarNav">
        <ul class="navbar-nav">
          <li class="nav-item">
            <a class="nav-link active" aria-current="page" href="#">Home</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Features</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Pricing</a>
          </li>
          
          <!-- Dropdown -->
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
              Dropdown
            </a>
            <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><hr class="dropdown-divider"></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
            </ul>
          </li>
          
        </ul>
      </div>
    </div>
  </nav>

  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/js/bootstrap.bundle.min.js"></script>
</body>
</html>
$( "p" ).addClass( "myClass yourClass" );
$( "button.continue" ).html( "Next Step..." )
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Mobile First Approach</title>
    <style>
        body, h1, h2, p, ul {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
            background-color: #f4f4f4;
            color: #333;
            padding: 20px;
        }

        header {
            background-color: #007bff;
            color: white;
            padding: 15px;
            text-align: center;
        }

        header h1 {
            font-size: 1.8rem;
        }

        nav {
            background-color: #333;
            padding: 10px;
            text-align: center;
        }

        nav ul {
            list-style-type: none;
        }

        nav ul li {
            display: inline;
            margin: 0 15px;
        }

        nav ul li a {
            color: white;
            text-decoration: none;
            font-weight: bold;
            font-size: 1.1rem;
        }

        nav ul li a:hover {
            color: #ffcc00;
        }

        main {
            background-color: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            margin-top: 20px;
        }

        main h2 {
            font-size: 1.6rem;
            margin-bottom: 10px;
        }

        main p {
            font-size: 1rem;
            color: #555;
            line-height: 1.6;
        }

        footer {
            text-align: center;
            padding: 10px;
            background-color: #333;
            color: white;
            margin-top: 20px;
        }

   
        @media(min-width: 768px) {
            header h1 {
                font-size: 2.5rem;
            }

            nav ul li {
                margin: 0 25px;
            }

            main h2 {
                font-size: 2rem;
            }

            footer {
                font-size: 1.2rem;
            }
        }

     
        @media(min-width: 1024px) {
            body {
                max-width: 960px;
                margin: 0 auto;
            }

            main {
                padding: 40px;
            }
        }
    </style>
</head>
<body>

    <header>
        <h1>Welcome to Our Website</h1>
    </header>

    <nav>
        <ul>
            <li><a href="#home">Home</a></li>
            <li><a href="#about">About</a></li>
            <li><a href="#services">Services</a></li>
            <li><a href="#contact">Contact</a></li>
        </ul>
    </nav>

    <main>
        <section id="home">
            <h2>Home</h2>
            <p>Welcome to our mobile-first website!</p>
        </section>

        <section id="about">
            <h2>About Us</h2>
            <p>We offer high-quality services to help your business grow.</p>
        </section>

        <section id="services">
            <h2>Our Services</h2>
            <ul>
                <li>Web Design</li>
                <li>Development</li>
                <li>SEO</li>
                <li>Marketing</li>
            </ul>
        </section>
    </main>

    <footer>
        <p>&copy; 2024 Company Name. All Rights Reserved.</p>
    </footer>

</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CVR</title>
    <style>
        body, h1, h2, p, ul {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
        }

        header {
            background: #004080;
            color: #fff;
            padding: 1rem 0;
            text-align: center;
        }

        header h1 {
            margin-bottom: 0.5rem;
        }

        header p {
            font-style: italic;
        }

        nav {
            background: #0066cc;
            padding: 0.5rem 0;
        }

        nav ul {
            list-style: none;
            display: flex;
            justify-content: center;
        }

        nav ul li {
            margin: 0 1rem;
        }

        nav ul li a {
            text-decoration: none;
            color: #fff;
            font-weight: bold;
            transition: color 0.3s;
        }

        nav ul li a:hover {
            color: #ffcc00;
        }

        main {
            padding: 2rem;
            background: #f4f4f4;
        }

        main section {
            margin-bottom: 2rem;
        }

        main section h2 {
            color: #004080;
            margin-bottom: 1rem;
        }

        footer {
            background: #333;
            color: #fff;
            text-align: center;
            padding: 1rem 0;
            margin-top: 2rem;
        }
    </style>
</head>
<body>
    <header>
        <div class="header-container">
            <h1>CVR</h1>
            <p>Your Path to Excellence</p>
        </div>
    </header>

    <nav>
        <ul>
            <li><a href="#home">Home</a></li>
            <li><a href="#about">About Us</a></li>
            <li><a href="#programs">Programs</a></li>
            <li><a href="#admissions">Admissions</a></li>
            <li><a href="#contact">Contact</a></li>
        </ul>
    </nav>

    <main>
        <section id="home">
            <h2>Welcome to CVR</h2>
            <p>Discover our programs, vibrant campus life, and opportunities for growth.</p>
        </section>

        <section id="about">
            <h2>About Us</h2>
            <p>We are a leading institution offering world-class education and research opportunities.</p>
        </section>

        <section id="programs">
            <h2>Our Programs</h2>
            <ul>
                <li>Undergraduate Programs</li>
                <li>Postgraduate Programs</li>
                <li>Online Courses</li>
            </ul>
        </section>

        <section id="admissions">
            <h2>Admissions</h2>
            <p>Applications are now open for the upcoming academic year.</p>
        </section>
    </main>

    <footer>
        <p>&copy; 2024 University Name. All rights reserved.</p>
    </footer>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Login Page</title>
</head>
<body>
    <h2>Login</h2>
    <form action="LoginServlet" method="post">
        Username: <input type="text" name="username" required><br><br>
         password: <input type="text" name="pass" required><br><br>
        <input type="submit" value="Login">
    </form>
</body>
</html>
//welcomeservlet.java
package test;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@WebServlet("/WelcomeServlet")
public class WelcomeServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // Retrieve the existing session, if it exists
        HttpSession session = request.getSession(false);
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        if (session != null) {
            String username = (String) session.getAttribute("username");
            String pass = (String) session.getAttribute("pass");
            if (username != null) {
                out.println("<html><body>");
                out.println("<h2>Welcome, " + username + "!</h2>");
                out.println("<a href='LogoutServlet'>Logout</a>");
                out.println("</body></html>");
            } else {
                response.sendRedirect("login.html"); // Redirect if no username in session
            }
        } else {
            response.sendRedirect("login.html"); // Redirect if no session exists
        }
    }
}
//loginservlet.java
package test;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String username = request.getParameter("username");
        String pass = request.getParameter("pass");
        

        // Create a new session or retrieve the existing one
        HttpSession session = request.getSession();
        
        // Store the username in the session
        session.setAttribute("username", username);
        session.setAttribute("pass", pass);
        // Respond with the welcome page content
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println("<html><body>");
        out.println("<h2>Welcome, " + username + "!</h2>");
        out.println("<a href='LogoutServlet'>Logout</a>");
        out.println("</body></html>");
    }
}
//logoutservlet.java
package test;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@WebServlet("/LogoutServlet")
public class LogoutServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // Get the existing session, if any
        HttpSession session = request.getSession(false);

        if (session != null) {
            // Invalidate the session
            session.invalidate();
        }

        // Redirect to the login page
        response.sendRedirect("login.html");
    }
}
{
	"blocks": [
		{
			"type": "header",
			"text": {
				"type": "plain_text",
				"text": ":cool-cool: Boost Days - Whats On This Week! :cool-cool:"
			}
		},
		{
			"type": "section",
			"text": {
				"type": "mrkdwn",
				"text": "Mōrena Ahuriri & happy Monday! :wave:\n\nWe're excited to kick off another great week in the office with our Boost Day Program! :yay: Please see below for whats on this week :arrow-bounce:"
			}
		},
		{
			"type": "divider"
		},
		{
			"type": "header",
			"text": {
				"type": "plain_text",
				"text": ":calendar-date-15: Wednesday, 15th January",
				"emoji": true
			}
		},
		{
			"type": "section",
			"text": {
				"type": "mrkdwn",
				"text": "\n:coffee: *Café Partnership*: Enjoy coffee and café-style beverages from our cafe partner, *Adoro*, located in our office building *8:00AM - 11:30AM*.\n:sandwich: *Lunch*: Provided by *Mitzi and Twinn* *12:00PM - 1:00PM* in the Kitchen."
			}
		},
		{
			"type": "header",
			"text": {
				"type": "plain_text",
				"text": ":calendar-date-16: Thursday, 16th January",
				"emoji": true
			}
		},
		{
			"type": "section",
			"text": {
				"type": "mrkdwn",
				"text": ":coffee: *Café Partnership*: Enjoy coffee and café-style beverages from our cafe partner, *Adoro*, located in our office building *8:00AM - 11:30AM*. \n:breakfast: *Breakfast*: Provided by *Roam* *9:30AM - 11:00AM* in the Kitchen."
			}
		},
		{
			"type": "divider"
		},
		{
			"type": "section",
			"text": {
				"type": "mrkdwn",
				"text": "Stay tuned to this channel for more details, check out the <https://calendar.google.com/calendar/u/0?cid=eGVyby5jb21fbXRhc2ZucThjaTl1b3BpY284dXN0OWlhdDRAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ|*Hawkes Bay Social Calendar*>, and get ready to Boost your workdays!\n\nWX Team :party-wx:"
			}
		}
	]
}
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Fri Nov 15 2024 08:42:12 GMT+0000 (Coordinated Universal Time) https://api.jquery.com/addClass/

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Fri Nov 15 2024 08:39:16 GMT+0000 (Coordinated Universal Time) https://jquery.com/

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Fri Nov 15 2024 08:23:40 GMT+0000 (Coordinated Universal Time) https://community.dynamics.com/blogs/post/?postid

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Fri Nov 15 2024 06:56:38 GMT+0000 (Coordinated Universal Time)

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