Need help in applet

Question

Hi all,
I am newbie in java applet programming,
I have write a source code that have 3 button in applet. (Booking, schedule and verify)
I want to make when the user press the button it will call the other java class that contain the interface off booking Or Schedule Or Verify. I want the i nterface output add the center of parentPanel in mycode.
I did not know how to write the other java file that can be call in my java class, can anyone help me to write the simple one?
parentPanel.add(call other class that contain interface, BorderLayout.CENTER);
Below is my code:
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.text.DecimalFormat;
public class Kell extends JApplet {
    private JPanel parentPanel, titlePanel, orderPanel;
    private JPanel bottomPanel, titleAndMenuPanel;
      private JPanel menuBtnPanel;
    private JLabel lblTitle, lblDesc;
      private JButton bookingBtn, scheduleBtn, verifyBtn;
    private ButtonGroup menuUtamaBtn;
     // Applet Size
     private final Dimension appletSize = new Dimension(500, 500);
    public void init()
        // set applet size
        this.setSize(appletSize);
        * Create Panels
        parentPanel = new JPanel();
            orderPanel = new JPanel();
            titlePanel = new JPanel();
            titleAndMenuPanel = new JPanel();
            menuBtnPanel = new JPanel();
        bottomPanel = new JPanel();
        * Set Panel Layouts
            titleAndMenuPanel.setLayout(new GridLayout(2,1));
        parentPanel.setLayout(new BorderLayout());
        titlePanel.setLayout(new BoxLayout(titlePanel, BoxLayout.Y_AXIS));
        orderPanel.setLayout(new BoxLayout(orderPanel, BoxLayout.Y_AXIS));
            menuBtnPanel.setLayout(new GridLayout(1,3));
        //bottomPanel.setLayout(new BorderLayout(5,5));
        // Title
        lblTitle = new JLabel("Bookiing OnnnLiine");
        lblTitle.setFont (new Font ("Book Antiqua", Font.BOLD, 18));
        lblTitle.setAlignmentX(Component.CENTER_ALIGNMENT);
        titlePanel.add(lblTitle);
        lblDesc = new JLabel("This is the online system that....");
        lblDesc.setFont (new Font ("Book Antiqua", Font.BOLD, 18));
        lblDesc.setAlignmentX(Component.CENTER_ALIGNMENT);
        orderPanel.add(lblDesc);
           // Button
            menuUtamaBtn = new ButtonGroup();
        bookingBtn = new JButton("Booking");
        scheduleBtn = new JButton("Schedule");
        verifyBtn = new JButton("Verify");
            menuUtamaBtn.add(bookingBtn);
        menuUtamaBtn.add(scheduleBtn);
        menuUtamaBtn.add(verifyBtn);
      //bookingBtn.addActionListener(new bookingBtnListener());
      //scheduleBtn.addActionListener(new scheduleBtnListener());
      //verifyBtn.addActionListener(new verifyBtnListener());
        menuBtnPanel.add(bookingBtn);
        menuBtnPanel.add(scheduleBtn);
        menuBtnPanel.add(verifyBtn);
         * Add Panels
            titleAndMenuPanel.add(titlePanel, BorderLayout.NORTH);
            titleAndMenuPanel.add(menuBtnPanel, BorderLayout.SOUTH);
        parentPanel.add(titleAndMenuPanel, BorderLayout.NORTH);
        parentPanel.add(orderPanel, BorderLayout.CENTER);
        parentPanel.add(bottomPanel, BorderLayout.SOUTH);
        add(parentPanel);
     * Listeners
      private class bookingBtnListener implements ActionListener {
        public void actionPerformed (ActionEvent event) {
               // I want it to call the other class
}thanks

Answer 1

I have two java file.
The main java file is Kell.java
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.text.DecimalFormat;
public class Kell extends JApplet {
    private JPanel parentPanel, titlePanel, orderPanel;
    private JPanel bottomPanel, titleAndMenuPanel;
      private JPanel menuBtnPanel;
    private JLabel lblTitle, lblDesc;
      private JButton bookingBtn, scheduleBtn, verifyBtn;
    private ButtonGroup menuUtamaBtn;
     // Applet Size
     private final Dimension appletSize = new Dimension(500, 500);
    public void init()
        // set applet size
        this.setSize(appletSize);
        * Create Panels
        parentPanel = new JPanel();
            orderPanel = new JPanel();
            titlePanel = new JPanel();
            titleAndMenuPanel = new JPanel();
            menuBtnPanel = new JPanel();
        bottomPanel = new JPanel();
        * Set Panel Layouts
            titleAndMenuPanel.setLayout(new GridLayout(2,1));
        parentPanel.setLayout(new BorderLayout());
        titlePanel.setLayout(new BoxLayout(titlePanel, BoxLayout.Y_AXIS));
        orderPanel.setLayout(new BoxLayout(orderPanel, BoxLayout.Y_AXIS));
            menuBtnPanel.setLayout(new GridLayout(1,3));
        //bottomPanel.setLayout(new BorderLayout(5,5));
        // Title
        lblTitle = new JLabel("Bookiing OnnnLiine");
        lblTitle.setFont (new Font ("Book Antiqua", Font.BOLD, 18));
        lblTitle.setAlignmentX(Component.CENTER_ALIGNMENT);
        titlePanel.add(lblTitle);
        lblDesc = new JLabel("This is the online system that....");
        lblDesc.setFont (new Font ("Book Antiqua", Font.BOLD, 18));
        lblDesc.setAlignmentX(Component.CENTER_ALIGNMENT);
        orderPanel.add(lblDesc);
           // Button
            menuUtamaBtn = new ButtonGroup();
        bookingBtn = new JButton("Booking");
        scheduleBtn = new JButton("Schedule");
        verifyBtn = new JButton("Verify");
            menuUtamaBtn.add(bookingBtn);
        menuUtamaBtn.add(scheduleBtn);
        menuUtamaBtn.add(verifyBtn);
        bookingBtn.addActionListener(new bookingBtnListener());
      //scheduleBtn.addActionListener(new scheduleBtnListener());
      //verifyBtn.addActionListener(new verifyBtnListener());
        menuBtnPanel.add(bookingBtn);
        menuBtnPanel.add(scheduleBtn);
        menuBtnPanel.add(verifyBtn);
         * Add Panels
            titleAndMenuPanel.add(titlePanel, BorderLayout.NORTH);
            titleAndMenuPanel.add(menuBtnPanel, BorderLayout.SOUTH);
        parentPanel.add(titleAndMenuPanel, BorderLayout.NORTH);
        parentPanel.add(orderPanel, BorderLayout.CENTER);
        parentPanel.add(bottomPanel, BorderLayout.SOUTH);
        add(parentPanel);
     * Listeners
      private class bookingBtnListener implements ActionListener {
        public void actionPerformed (ActionEvent event) {
               // I want it to call the other class
               MyFrame booking = new MyFrame();
               parentPanel.add(booking.bookingPANEL(), BorderLayout.CENTER);
}The other file is MyFrame.java:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MyFrame
     public JPanel bookingPANEL()
          JPanel bookingP = new JPanel();
          bookingP.setLayout(new BoxLayout(bookingP, BoxLayout.Y_AXIS));
          JLabel lblDesc = new JLabel("Testing Booking Panel");
          lblDesc.setFont (new Font ("Book Antiqua", Font.BOLD, 18));
          lblDesc.setAlignmentX(Component.CENTER_ALIGNMENT);
          bookingP.add(lblDesc);
          return bookingP;
}How i want to call the MyFrame.java when i click at the Booking button on the Kell.java. I want the JPanel in the MyFrame.java display in
parentPanel.add(booking.bookingPANEL, BorderLayout.CENTER);Can you help me?
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