Java useful program

Fill colors using Applet

import java.applet.*;

import java.awt.*;

public class  fillColor extends Applet

{

   public void paint(Graphics g)

     {

      g.drawRect(300,150,200,100);

      g.setColor(Color.yellow);   

      g.fillRect(300,150, 200, 100);

      g.setColor(Color.magenta);

      g.drawString("Rectangle",500,150);

   }

}

Create event listener in Applet

import java.applet.*;

import java.awt.event.*;

import java.awt.*;

public class EventListeners extends Applet 

implements ActionListener

{

   TextArea txtArea;

   String Add, Subtract;

   int i = 10, j = 20, sum =0,Sub=0;

   public void init()

    {

      txtArea = new TextArea(10,20);

      txtArea.setEditable(false);

      add(txtArea,"center");

      Button b = new Button("Add");

      Button c = new Button("Subtract");

      b.addActionListener(this);

      c.addActionListener(this);

      add(b);

      add(c);

   }

   public void actionPerformed(ActionEvent e)

    {

      sum = i + j;

      txtArea.setText("");

      txtArea.append("i = "+ i + "\t" + "j = " + j + "\n");

      Button source = (Button)e.getSource();

      if(source.getLabel() == "Add")

      {

         txtArea.append("Sum : " + sum + "\n");

      }

      if(i >j)

      {

         Sub = i - j;

      }

      else

      {

         Sub = j - i;

      }

      if(source.getLabel() == "Subtract")

       {

         txtArea.append("Sub : " + Sub + "\n");

      }

   }

}

Play sound using Applet

import java.applet.*;

import java.awt.*;

import java.awt.event.*;

public class PlaySoundApplet extends Applet 

implements ActionListener

{

   Button play,stop;

   AudioClip audioClip;

   public void init()

     {

      play = new Button("  Play in Loop  ");

      add(play);

      play.addActionListener(this);

      stop = new Button("  Stop  ");

      add(stop);

      stop.addActionListener(this);

      audioClip = getAudioClip(getCodeBase(), "Sound.wav");

   }

   public void actionPerformed(ActionEvent ae)

    {

      Button source = (Button)ae.getSource();

      if (source.getLabel() == "  Play in Loop  ")

      {

         audioClip.play();

      }  

      else if(source.getLabel() == "  Stop  ")

      {

         audioClip.stop();

      }

   }

}