CREATING A FRAME WINDOW IN AN APPLET

How to create a child frame window from within an applet...........

Creating a new frame window from within an applet is actually quite easy.

The following steps may be used to do it,

• Create a subclass of Frame
• Override any of the standard window methods,such as init(),start(),stop(),and paint().
• Implement the windowClosing() method of the windowlistener interface,calling setVisible(false)when the window is closed
• Once you have defined a Frame subclass,you can create an object of that class.But it will note be initially visible
• When created,the window is given a default height and width
• You can set the size of the window explicitly by calling the setSize() method

The example program is  shown below:

// Create a child frame window from within an applet.

import java.awt.*;

import java.awt.event.*;

import java.applet.*;

/*

<applet code="AppletFrame" width=400 height=60>

</applet>

*/

// Create a subclass of Frame.

class SampleFrame extends Frame {

SampleFrame(String title) {

super(title);

// create an object to handle window events

MyWindowAdapter adapter = new MyWindowAdapter(this);

// register it to receive those events

addWindowListener(adapter);

}

public void paint(Graphics g) {

g.drawString("This is in frame window", 10, 40);

}

}

class MyWindowAdapter extends WindowAdapter {

SampleFrame sampleFrame;

public MyWindowAdapter(SampleFrame sampleFrame) {

this.sampleFrame = sampleFrame;

}

public void windowClosing(WindowEvent we) {

sampleFrame.setVisible(false);

}

}

// Create frame window.

public class AppletFrame extends Applet {

Frame f;

public void init() {

f = new SampleFrame("A Frame Window");

f.setSize(150, 150);

f.setVisible(true);

}

public void start() {

f.setVisible(true);

}

public void stop() {

f.setVisible(false);

}

public void paint(Graphics g) {

g.drawString("This is in applet window", 15, 30);

}

}

OUTPUT