Applet Example

import java.applet.*;

import java.awt.*;

import java.awt.event.*;

public class AwtClass extends Applet implements ActionListener

{

            String result="";

            TextField FirstText,SecondText;

            Button Add,Sub,Div,Mul;

            public void init()

            {

                        //Label

                        Label FirstLabel=new Label("First Number ",Label.RIGHT);

                        Label SecondLabel=new Label("Second Number ",Label.RIGHT);

                        Label AnsLabel=new Label("Result ",Label.RIGHT);                    

                        //TextField

                        FirstText=new TextField(5);

                        SecondText=new TextField(5);

                        //Button

                        Button Add=new Button("Add");

                        Button Sub=new Button("Subtract");

                        Button Div=new Button("Division");

                        Button Mul=new Button("Multiply");

                        add(FirstLabel);

                        add(FirstText);

                        add(SecondLabel);                   

                        add(SecondText);

                        add(Add);

                        add(Sub);

                        add(Div);

                        add(Mul);

                        Add.addActionListener(this);

                        Sub.addActionListener(this);

                        Div.addActionListener(this);

                        Mul.addActionListener(this);

            }

            public void actionPerformed(ActionEvent ae)

            {

                        try

                        {

                                    String op=ae.getActionCommand();

                                    if(op.equals("Add"))

                                    {                      

                                                result=(Integer.toString(Integer.parseInt(FirstText.getText())+Integer.parseInt(SecondText.getText())));                               

                                    }

                                    else if(op.equals("Subtract"))

                                    {                                                          

                                                result=(Integer.toString(Integer.parseInt(FirstText.getText())-Integer.parseInt(SecondText.getText())));                        

                                    }          

                                    else if(op.equals("Division"))

                                    {                      

                                                result=(Integer.toString(Integer.parseInt(FirstText.getText())/Integer.parseInt(SecondText.getText())));                                

                                    }

                                    else

                                    {                      

                                                result=(Integer.toString(Integer.parseInt(FirstText.getText())*Integer.parseInt(SecondText.getText())));                                

                                    }

                        }

                        catch(Exception e)

                        {

                                    result=e.getMessage();

                        }

                        repaint();

            }

            public void paint(Graphics g)

            {

                        g.drawString("Output : "+result,6,80);

            }

}

File Name : AwtClass.html

<applet code="AwtClass.class" width=350 height=100>

</applet>