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Adapters Example
In the following program code, the adapter class has been used. This class has been used as an anonymous inner class to draw a rectangle within an applet.

Adapters Example

In the following program code, the adapter class has been used. This class has been used as an anonymous inner class to draw a rectangle within an applet. This example demonstrates the functionality of the mouse press. That is on every click of the mouse from top left corner, we get a rectangle on the release of the bottom right.

The following program demonstrates the functionality of adapter class.


import java.applet.*;

import java.awt.*; 

import java.awt.event.*; 



public class AdapterDemo extends Applet{

  public void init(){

    addMouseListener(

    new MouseAdapter(){

      int topX, bottomY;

      public void mousePressed(MouseEvent me){

        topX = me.getX();

        bottomY = me.getY();

      }

      public void mouseReleased(MouseEvent me){

        Graphics g = AdapterDemo.this.getGraphics();

        g.drawRect(topX, bottomY, me.getX()-topX, me.getY()-bottomY);

      }

    });

  }

}

Output of the program:

C:\newprgrm>javac AdapterDemo.java

C:\newprgrm>appletviewer AdapterDemo.html

C:\newprgrm>

Download this example.

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