Java Glossary : JApplet

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JApplet

Allows java programs to run in browsers. It is the swing version of Applet and it behaves the same.

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By adding the following method to your Applet, you can allow it be run either as an Applet or as an application. If your Applet were called MyApplet, here is the code to add to the MyApplet class to make it also into an application:
view
Your Applet can get hold of the parameters in the HTML.
That code is quite crude. It will not do such things as:

Simulate the getParameter method to get at the JApplet parameters.
Adjust the co-ordinate system so part of the JApplet is not hidden under the JFrame menu bar. Layout managers deal with this automtically, but if you do absolute positioning, you have to compensate manually.

The easiest way to deal with these problems is to use two JApplet constructors, one the usual default constructor and one that passes the param information in. Inside you can keep track of which mode you are running in with a boolean you set in the constructor. getParameter( "favouriteColour" ) will return the String "orange" . When you write an Applet often you will override some of the following methods: init() , start() , stop() , destroy() and paint(Graphics g) . There is equivalent code for Applet.

documentation on JApplet : available:

on the web at java.Sun.com
on J: in the JDK 1.4.2_04: J:\j2sdk1.4.2_04\docs\api\javax\swing\JApplet.html
on J: in the JDK 1.5 beta: J:\Program Files\Java\j2sdk1.5.0\docs\api\javax\swing\JApplet.html

Applet ¤ AWT ¤ Swing ¤ window differences

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