import java.sql.*;

public class DatabaseConnectionExample {
    public static void main(String[] args) {
      
        String url = "jdbc:mysql://localhost:3306/your_database";
        String username = "root"; 
        String password = "your_password";

        try {
           
            Connection connection = DriverManager.getConnection(url, username, password);
            System.out.println("Connection established!");

            
            Statement statement = connection.createStatement();
            
            
            String query = "SELECT * FROM your_table";
            ResultSet resultSet = statement.executeQuery(query);
            
           
            while (resultSet.next()) {
                System.out.println(resultSet.getString("column_name"));
            }

           
            resultSet.close();
            statement.close();
            connection.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}