[news.eclipse.newcomer] Newbie help with SWT

[rajibaba@xxxxxxxxx (Dennis Williams)]

I'm new to both Java and the Eclipse IDE, and I'm trying to create a 
simple SWT application using the Visual Editor. Everything is fine when 
running the app from within the editor, but when I export it to an 
executable jar file, double-clicking the jar from explorer give me the 
error "Could not find the main class. Program will exit."

I've also tried running from the command line with the following command:

java -classpath C:\swt\swt.jar;C:\SWTTest\SWTTest.jar 
-Djava.library.path=C:\SWT SWTTest

where SWTTest is the name of the main class. I get the exception 
"java.lang.NoClassDefFoundError: SWTTest".

The manifest file inside the jar file is as follows:
Manifest-Version: 1.0
Main-Class: my.pkg.SWTtest

Everything looks right, but it just won't run... I'm about at my wit's 
end, so any help would be appreciated.

btw, I'm running Eclipse 3.1.1 on a WinXP machine, and this project is 
basically just a shell.. nothing fancy.