Syntax for Execute this program :
Firstly then name of class and file should be and run your java file
Syntax : Appletviewer filename.java
Example : Appletviewer simple_applet.javaimport java.awt.*;
import java.applet.*;
import java.awt.event.*;
/*
<html>
<body>
<applet code="four_arith" width=300 height=400>
</applet>
</body>
</html>
*/
public class four_arith extends Applet implements ActionListener
{
Label l;
Label l1;
Label l2;
Label l3;
TextField t1;
TextField t2;
TextField re;
Button b1;
Button b2;
Button b3;
Button b4;
String a,b;
public void init()
{
l = new Label("SIMPLE CALCULATOR");
l1 = new Label("Enter 1st Number : ");
t1 = new TextField();
l2 = new Label("Enter 2nd Number : ");
t2 = new TextField();
re = new TextField();
b1 = new Button("+");
b2 = new Button("-");
b3 = new Button("*");
b4 = new Button("/");
l3 = new Label("Result : ");
add(l);
add(l1);
add(t1);
add(l2);
add(t2);
add(b1);
add(b2);
add(b3);
add(b4);
add(l3);
add(re);
setLayout(null);
l.setBounds(120,0,300,20);
l1.setBounds(100,40,100,20);
t1.setBounds(250,40,50,20);
l2.setBounds(100,65,100,20);
t2.setBounds(250,65,50,20);
b1.setBounds(100,100,30,30);
b2.setBounds(155,100,30,30);
b3.setBounds(210,100,30,30);
b4.setBounds(265,100,30,30);
l3.setBounds(100,140,100,20);
re.setBounds(250,140,50,20);
b1.addActionListener(this);
b2.addActionListener(this);
b3.addActionListener(this);
b4.addActionListener(this);
}
public void actionPerformed(ActionEvent ae)
{
String s = ae.getActionCommand();
if(s.equals("+"))
{
a = t1.getText();
b = t2.getText();
int n1 = Integer.parseInt(a);
int n2 = Integer.parseInt(b);
re.setText("" + (n1+n2));
}
else if(s.equals("-"))
{
a = t1.getText();
b = t2.getText();
int n1 = Integer.parseInt(a);
int n2 = Integer.parseInt(b);
re.setText("" + (n1-n2));
}
else if(s.equals("*"))
{
a = t1.getText();
b = t2.getText();
int n1 = Integer.parseInt(a);
int n2 = Integer.parseInt(b);
re.setText("" + (n1*n2));
}
else if(s.equals("/"))
{
a = t1.getText();
b = t2.getText();
int n1 = Integer.parseInt(a);
int n2 = Integer.parseInt(b);
re.setText("" + (n1/n2));
}
}
}
OUTPUT
