Java Demos

If you installed the java_dev.sw.demos subsystem, then you have two demo applets. Follow these links to see them if you are running a web browser with Java support:

• Bounce
• Impression

In order to view these in the appletviewer, you can do the following:

• cd /usr/demos/java/Bounce
appletviewer index.html
  
  
• cd /usr/demos/java/Impression
appletviewer imppaint.html
  
  

There are also some simple examples of how to use JNI, Sun's new Java Native Interface. They illustrate how to code native functions using JNI, create JNI-specific header files using javah, and embed a Java VM in your own application using the Invocation API. They are under /usr/demos/java in the following directories:

JNI-simple-test

an illustration of "Hello World" using JNI

JNI-big-test

shows how to pass arguments and return values to and from the native world

JNI-invocation-test

shows how to use the Invocation API

Also under /usr/demos/java are a few demos which demonstrate how to use native graphics/media code in the context of a Java application:

java-and-X

shows how to use native X/Motif code with AWT components

java-and-openGL

shows how to use OpenGL inside an AWT canvas

java-and-video

shows how to use display live video inside an AWT canvas

Each of these demos comes with a Makefile; typing make will build and run the example program.

These demo directories are owned by the user demos, so you should either login as user demos or copy them to a directory where you have write permission if you want to be able to make changes, recompile, etc.

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