This lesson discusses the basics of Java applets, how to develop applets that interact richly with their environment, and how to deploy applets.
A Java applet is a special kind of Java program that a browser enabled with Java
technology can download from the internet and run.
An applet is typically embedded inside a web page and runs in the
context of a browser. An applet must be a subclass of the
java.applet.Applet class. The
Applet class provides
the standard interface between the applet and the browser environment.
Swing provides a special subclass of the
Applet class called
JApplet class should be used
for all applets that use Swing components to construct their graphical user
The browser's Java Plug-in software manages the lifecycle of an applet.