How to find out the name of the executable

hi,
say, i have an executable jar called Hello.jar. how do i know the name "Hello.jar" in main() when the executable jar is launched.
that is, if i rename Hello.jar to HelloWorld.jar, how can main() know about this? this matters because i want to run the app
in a separate process, which requires the name of the application.
thanks

yes to question 1: because i'm calling into a dll through jni to display a screensaver in the preview window. not spawning a separate process causes windows to hang for a while before
the screensaver is displayed. the new process is passed arguments that are checked by main() so that another process won't be created (no infinite recursions).
thanks.

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