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.

Adapters Example

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.