EXAMPLE OF BUTTON(JAVA PROGRAM)

 //~~~~~~~EXAMPLE OF BUTTON~~~~~~~//

import  java.awt.*;

import java.awt.event.*;

import java.applet.*;

/*<applet code=but1.class

         height=300

         width=600>

         </applet>*/

public class  but1 extends Applet implements ActionListener

{

     Font f;

     String  s=" ",s1=" ";

     Button   b;

     TextField  t;

     public  void init ()

     {

     t= new TextField(10);

     t.setText("0");

     add(t);

     f=new  Font("SansSerif",Font.BOLD,10);

     setFont(f);

     setBackground(Color.RED);

     setForeground(Color.YELLOW);

     b= new  Button("ok");

     add(b);

     b.addActionListener(this);

     }

     public void  actionPerformed(ActionEvent ae)

     {

     s=t.getText();

     int i=Integer.parseInt(s);

     String s3=ae.getActionCommand();

     if(s3.equals("ok"))

     {

     if(i%2==0)

     {

     s1="even number";

     }

     else

     {

     s1="odd";

     }

     }

     repaint();

     }

     public void paint(Graphics g)

     {

     showStatus("press ok to calculate");

     g.drawString(s1,100,130);

     }

}