java.lang.UnsupportedClassVersionError: Bad version n umber in .class file

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    Root Cause Analysis

    1. java.lang.UnsupportedClassVersionError

      Bad version n umber in .class file

      at java.lang.ClassLoader.defineClass1()
    2. Java RT
      ClassLoader.defineClass
      1. java.lang.ClassLoader.defineClass1(Native Method)
      2. java.lang.ClassLoader.defineClass(Unknown Source)
      2 frames