java.lang.UnsupportedClassVersionError: org/freeplane/launcher/Launcher : Unsupported major.minor version 51.0

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    Root Cause Analysis

    1. java.lang.UnsupportedClassVersionError

      org/freeplane/launcher/Launcher : Unsupported major.minor version 51.0

      at java.lang.ClassLoader.defineClass1()
    2. Java RT
      Launcher$AppClassLoader.loadClass
      1. java.lang.ClassLoader.defineClass1(Native Method)
      2. java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
      3. java.lang.ClassLoader.defineClass(ClassLoader.java:621)
      4. java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
      5. java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
      6. java.net.URLClassLoader.access$000(URLClassLoader.java:58)
      7. java.net.URLClassLoader$1.run(URLClassLoader.java:197)
      8. java.security.AccessController.doPrivileged(Native Method)
      9. java.net.URLClassLoader.findClass(URLClassLoader.java:190)
      10. java.lang.ClassLoader.loadClass(ClassLoader.java:306)
      11. sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
      11 frames