dependencies - can java classloader user different version of java to load different classes -

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a module written in scala depends on a.jar (which requires java 6). when try start run module, requires java 7 load main class correctly, otherwise classdefnotfounderror. when use java 7 run module, 1 function in a.jar requires java 6 break (saying can't load corresponding class). how can deal such dilemma? thanks.


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