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

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    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
      ClassLoader.loadClassInternal
      1. java.lang.ClassLoader.defineClass1(Native Method)
      2. java.lang.ClassLoader.defineClass(ClassLoader.java:676)
      3. java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
      4. java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
      5. java.net.URLClassLoader.access$100(URLClassLoader.java:56)
      6. java.net.URLClassLoader$1.run(URLClassLoader.java:195)
      7. java.security.AccessController.doPrivileged(Native Method)
      8. java.net.URLClassLoader.findClass(URLClassLoader.java:188)
      9. java.lang.ClassLoader.loadClass(ClassLoader.java:317)
      10. sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:280)
      11. java.lang.ClassLoader.loadClass(ClassLoader.java:252)
      12. java.lang.ClassLoader.loadClassInternal(ClassLoader.java:375)
      12 frames
    3. Unknown
      NyARMultiTest2.setup
      1. NyARMultiTest2.setup(NyARMultiTest2.java:58)
      1 frame
    4. processing.core
      PApplet.run
      1. processing.core.PApplet.handleDraw(PApplet.java:1571)
      2. processing.core.PApplet.run(PApplet.java:1496)
      2 frames
    5. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:613)
      1 frame