Chapter 8 Applet Programming
Applet are small java programs that are primarily used in internet computing. The applets can enhance the rendering of HTML documents in the web browsers by the following.
 | Providing Animation. |
| Accepting interactive input from the user. |
| Display animated images with sound. |
| Providing graphical elements such as scrolling bars, text area, button and so on. |
An applet developed locally and stored in a local system is known as a local applet.
A remote applet is that which is developed by someone else and stored one a remote computer connected to the internet.
Applet life cycle :
Every java applet inherits a set of default behaviours from applet class. As a result, when an applet is loaded, it undergoes a series of changes in its state as shown in fig. the applet state include :
| Born or initialization state. |
| Running state. |
| Idle state. |
| Dead or destroyed state. |
Executable applet is nothing but the .class file of the applet, which is obtained by compiling the source code of the applet. In order to run a java applet, it is first necessary to have a web page that references that applet. There are four basic steps to create applet.
| Step 1 |  | Edit filename.java |
| Step 2 | | javac filename.java |
| Step 3 | | edit filename.html |
| Step 4 | | appletviewer filename.html |