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a question about creating the JAR file

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Hi:

I am a bit confused here. My code uses a third party JAR file, helper.jar. Now, I have finished compiling my code, with helper.jar on the classpath of course. Now it's time to create the executable JAR(hello.jar) for delivery.

My confusion is do I need to bundle helper.jar into hello.jar? One thought I have is that during compiling, all the code needed from helper.jar has been extracted and combined into the generated *.clss files in build/ directory. So, for creating hello.jar, I only need to bundle all *.class files in build/ directory. But I am not sure that is correct. 

Currently, I have to unjar(expand) helper.jar into build/ directory before I jar everything in build/. The result hello.jar works fine. If I skip unjarring helper.jar into build/ directory, no complain for creating hello.jar. But when running it, an exception of no class definition for a class inside helper.jar is thrown.

Thank you very much.

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a question about creating the JAR file zyng <xsli2@yahoo.com> - 2012-10-26 13:58 -0700
  Re: a question about creating the JAR file Lew <lewbloch@gmail.com> - 2012-10-26 14:14 -0700
    Re: a question about creating the JAR file zyng <xsli2@yahoo.com> - 2012-10-31 12:41 -0700
      Re: a question about creating the JAR file Lew <lewbloch@gmail.com> - 2012-10-31 15:19 -0700
  Re: a question about creating the JAR file Sven Köhler <remove-sven.koehler@gmail.com> - 2012-10-27 16:54 +0200
    Re: a question about creating the JAR file Jan Burse <janburse@fastmail.fm> - 2012-10-27 17:20 +0200
      Re: a question about creating the JAR file Jan Burse <janburse@fastmail.fm> - 2012-10-27 17:24 +0200
        Re: a question about creating the JAR file Sven Köhler <remove-sven.koehler@gmail.com> - 2012-10-27 19:06 +0200
    Re: a question about creating the JAR file Lew <lewbloch@gmail.com> - 2012-10-28 09:44 -0700
  Re: a question about creating the JAR file Roedy Green <see_website@mindprod.com.invalid> - 2012-11-01 18:26 -0700

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