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Re: help: class conflict in two different version JAR files

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Date	Wed, 20 Mar 2013 07:50:12 -0700 (PDT)
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Subject	Re: help: class conflict in two different version JAR files
From	zyng <xsli2@yahoo.com>
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On Wednesday, March 20, 2013 10:34:47 AM UTC-4, zyng wrote:
> I am using Eclipse. Project A uses 3rdparty.1.0.1.jar file; Project B uses 3rdparty.1.0.3.jar file. Project B depends on Project A.
> 
> 
> 
> I am working on Project B. I am not supposed to change anything in Project A. I hope that the code in B always use the class inside 3rdparty.1.0.3.jar. I don't know how to do that. I found that for the classes in 3rdpartyxx.jar, the code in B just use the class in 3rdparty.1.0.1.jar file, which is used by A. I guess since B depends on A, so 3rdparty.1.0.1.jar file has the higher priority. This causes some problem, which I just omit here.
> 
> 
> 
> If running by ANT on the command line, due to the way I set up(project A's code listed near the end of the Java classpath), the code in B uses the classes in 3rdparty.1.0.3.jar and the problem was avoided.
> 
> 
> 
> I hope to solve the problem in Eclipse. Thank you for your help.

Another thing I am unclear is that: in the code in Project B, in Eclipse, when I press F3 on one of the class names, it says no source attached in 3rdparty.1.0.3.jar, giving me the impression that the code is using the classes in 3rdparty.1.0.3.jar. However, when running, the code is definitely using the classes in 3rdparty.1.0.1.jar, not 3rdparty.1.0.3.jar. 

For example: In Eclipse, if I remove 3rdparty.1.0.1.jar from Project A's build path, some code of A has compiling errors. But it does not matter for this testing purpose. Now, if I run my JUNit test code in Project B, the correct classes are used and the problem was avoided.

Thread

help: class conflict in two different version JAR files zyng <xsli2@yahoo.com> - 2013-03-20 07:34 -0700
  Re: help: class conflict in two different version JAR files zyng <xsli2@yahoo.com> - 2013-03-20 07:50 -0700
    Re: help: class conflict in two different version JAR files Lew <lewbloch@gmail.com> - 2013-03-20 12:16 -0700
  Re: help: class conflict in two different version JAR files Lew <lewbloch@gmail.com> - 2013-03-20 12:14 -0700
  Re: help: class conflict in two different version JAR files Arne Vajhøj <arne@vajhoej.dk> - 2013-03-20 22:11 -0400
  Re: help: class conflict in two different version JAR files Roedy Green <see_website@mindprod.com.invalid> - 2013-03-20 20:32 -0700

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