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J option for jar file



If I launch my java application using:

java -Xmx128m MyJavaProgram

it works okay.

However, if I first create a jar file using:

jar -J-Xmx128m -cvmf manifest   MyJavaProgram.jar    class files....

and then double click on the resulting MyJavaProgram.jar, I get an out-of-memory error. The -J option doesn't seem to pass the memory request to the JVM. My Activity Monitor confirms this. For small cases, my program works okay.

I've tried googling and searching this archive without finding an answer.

Although I'm writing the program under OS X, I really want to use the jar file under Windows XP.

Any help would be appreciated,
frank
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