Launch problem with JAVAW

Question

I have a jar file containing a manifest file specifying the main class. When I launch the jar file with
java -jar myjar.jar
the application is launched correctly.
But when I use
javaW -jar myjar.jar (with the same jar file)
I have a Java Virtual Machine Launcher error that says: Fatal exception occurred. The program will exit.
I have installed the J2SDK 1.4.2 and the JRE 1.4.2_02-b03.
The same jar file worked fine previously...
Anyone has a solution?
Thank's

Answer 1

I discovered what my problem was. My application required a second jar library which I had installed in the extentions directory. Unfortunately, the sdk and the jre use different extensions directories, and I had only placed my jar library in one location.
java -jar <jarFile> uses the extensions directory located at ${sdk_home}\jre\lib\ext.
Double clicking on a jar file invokes the jre and uses the extensions directory located at c:\program files\java\j2re1.4.2_05\lib\ext.
In order to make my jar file work from both the command line java -jar invocation, and by double clicking, I needed to place my second jar library in both extensions directories. I've always disliked the fact that there are two extensions directories, it always seems to cause headaches.