Java Applet

Java Applets
A.Athharul haq (0087)

Contents
 Introducing an Applet.
 The genealogy of Japplet.
 Description with example.
 Method of creating a webpage.

Introducing Applets
 Applets are simple java programs can be
executed on browsers.
 Aplet classes should be imported.
 Applet may not have ‘main’ method.
Eg :-
IE (Internet Explorer)
Firefox
Chrome

Method of creating an Applet
import java.applet.*;
import java.awt.graphics;
public class HelloWorld extends Applet
{
public void paint(Graphics g)
{
g.drawRect(40,40,200,100);
g.drawString("Hello World!", 80, 60);
}}
Hello World

 This program should be saved as
HelloWorld.java
 The user need to create a html file to execute
Applet program

 <html>
 <head>
 </head>
 <body>
 <applet code=“HelloWorld.class” width=“400”
height=“400”>
 </applet>
 </body>
 </html>
 This Applet.html can be execued using
appletviewer on command prompt.

 C:> d:
 D:> cd appletviewer applet.htm
 Then it will be appear like this
Hello World

 drawOval - Oval / circle
 drawRect - Rectangle / Square
 drawString – String / Text
 FillOval - Oval with black fill color
 FillRect - Rectangle with black fill color

Java Applet

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Java Applet