An Applet Program to Add Two Numbers

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class Addition extends Applet
{
 Label l1,l2,l3;
 TextField t1,t2,t3;
 Button b;
 int x,y,z;
public void init()
{
 l1 = new Label("Number 1:");
 t1 = new TextField(10);
 l2 = new Label("Number 2:");
 t2 = new TextField(10);
 l3 = new Label("Total=");
 t3 = new TextField(10);
 b = new Button("Add");
 b.addActionListener(new test());
 add(l1); add(t1);
 add(l2); add(t2);
 add(l3); add(t3);
 add(b);
}
class test implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
 if(e.getSource() == b)
{
 x = Integer.parseInt(t1.getText());
 y = Integer.parseInt(t2.getText());
 z = x+y;
 t3.setText(String.valueOf(z));
}
} 
}
}

<html>
   <head>
   </head>
   <body>
         <applet code = "Addition.class" width = "520" height = "360"></applet>
   </body>
</html>

Output:
An Applet Program to Add Two Numbers