PROGRAM TO PERFORM ARITHMETIC OPERATIONS USING AWT CONTROLS

[project topics]

Code:

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.Choice.*;
//<applet code=Awte width=500 height=555></applet>
public class Awte extends Applet implements TextListener,ActionListener
{
int a,b,c;
String s;
TextField f1,f2,f3;
Label l1,l2,l3;
Button Add,Sub,Mul,Div;
public void init()
    {
        //setBackground(Color.green);
    setForeground(Color.red);
    l1=new Label("First number");
    l2=new Label("Second number");
                   l3=new Label("Result");
    f1=new TextField(10);
    f2=new TextField(20);
    f3=new TextField(20);
    //f3=new TextField(20);
    //f2.setEchochar("*");
    add(l1);
                     add(f1);
    add(l2);
    add(f2);
                   add(l3);
    add(f3);
        Add=new Button("Add");
    Sub=new Button("Sub");
                  Mul=new Button("Mult");
                 Div=new Button("Div");
    add(Add);
    add(Sub);
                    add(Mul);
                     add(Div);
        f1.addTextListener(this);
    f2.addTextListener(this);
    f3.addTextListener(this);
    Add.addActionListener(this);
    Sub.addActionListener(this);
                  Mul.addActionListener(this);
                  Div.addActionListener(this);
}

public void actionPerformed(ActionEvent ae)
{
    a=Integer.parseInt(f1.getText());
    b=Integer.parseInt(f2.getText());
    if(ae.getActionCommand().equals("Add"))
    c=a+b;
    else if(ae.getActionCommand().equals("Sub"))
    c=a-b;
else if(ae.getActionCommand().equals("Mult"))
    c=a*b;
                 else
    c=a/b;
    s=String.valueOf(c);
    repaint();
}


public void textValueChanged(TextEvent te)
{

}

public void paint(Graphics g)
    {    
    f3.setText(s);
    //g.drawString(String.valueOf(c),355,355);
    }

}

OUTPUT
E:\msc3\jiss\java>javac awte.java

E:\msc3\jiss\java>ap