java.lang.UnsupportedClassVersionError: Bad version number in .class file

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    Root Cause Analysis

    1. java.lang.UnsupportedClassVersionError

      Bad version number in .class file

      at java.lang.ClassLoader.defineClass1()
    2. Java RT
      SecureClassLoader.defineClass
      1. java.lang.ClassLoader.defineClass1(Native Method)
      2. java.lang.ClassLoader.defineClass(ClassLoader.java:620)
      3. java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
      3 frames