How 2 create desktop applications

At my university we only make Java programs for
examination purposes. How do I make my own Java
applications, which can be run on any computer - using
desktop icons, or the program files menu in windows?
Please be specific, e.g. what file type extensions do I need?
Does the API have any help on this? are there any tutorials?
Your help will be greatly appreciated.
T. Charles

Executable JAR files are the way to go. All you need to do is create a file called "Manifest.mf" and place the following line of code in it:
Main-Class: com.whatever.MyClass
Then from the command line, use JAR to archve the files together, specifying Manifest.mf as your JAR manifest. Let's say you need to package up a program with the main class of "com.newdeveloper.ClassProject". You might do the following:
c:\> echo Main-Class: com.newdeveloper.ClassProject > Manifest.mf
c:\> jar -cvmf Manifest.mf ClassProject.jar com
This should produce a file called "ClassProject.jar" that you can double-click on. Here are a few examples of executable Jar files (just open them with your favorite ZIP program to see what's inside:
http://java.dnsalias.com/duke
http://java.dnsalias.com/misslecommand
Here's an example of a complete application using executable JARs and the NullSoft installer:
http://www.datadino.com/tryit.html
BTW, you can get the NullSoft installer at:
http://www.nullsoft.com
Hope this answers your question. :-)

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import java.util.logging.Level;
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import java.text.*;
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