TextDemo.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

public class TextDemo implements ActionListener
{
    private JFrame frame;
	private JTextField tf1, tf2, tf3;
	private JTextArea ta;
	private JLabel label, label2;
	private JButton b;

	public TextDemo()
	{
		frame = new JFrame("A Simple Swing App");

		//frame.setSize(600, 400);
		Toolkit tk = frame.getToolkit();
		Dimension dim = tk.getScreenSize();
		int width = (int)dim.getWidth();
		int height = (int)dim.getHeight();
		frame.setSize(width, height);

		frame.setLayout(new FlowLayout());

		tf1 = new JTextField("Enter the name", 25); tf2 = new JTextField(20); tf3 = new JTextField("Enter a value");
		tf1.setFont(new Font("Verdana", Font.BOLD, 18));
		tf2.setFont(new Font("Verdana", Font.BOLD, 18));
		tf3.setFont(new Font("Verdana", Font.BOLD, 18));
		frame.add(tf1); frame.add(tf2); frame.add(tf3);
		//tf1.addActionListener(this); tf2.addActionListener(this); tf3.addActionListener(this);

		ta = new JTextArea(20, 15);
		ta.setFont(new Font("Verdana", Font.BOLD, 18));
		frame.add(ta);

		label = new JLabel();
		label.setFont(new Font("Verdana", Font.BOLD, 18));
		label.setForeground(Color.RED);
		frame.add(label);

		label2 = new JLabel();
		label2.setFont(new Font("Verdana", Font.BOLD, 18));
		label2.setForeground(Color.green);
		frame.add(label2);

		b = new JButton("Display");
		b.addActionListener(this);
		frame.add(b);

		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}

	public void actionPerformed(ActionEvent ae)
	{   String message ="";
		message += tf1.getText()+": ";
		message += tf2.getText()+": ";
		message += tf3.getText()+": ";
		label.setText(message);
		label2.setText(ta.getText());
	}

	public static void main(String[] args)
	{   new TextDemo();
	}
}