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

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    java.lang.UnsupportedClassVersionError: sun/tools/javac/Main (Unsupp orted major.minor version 49.0) [bpelc]

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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.loadClass
    1. java.lang.ClassLoader.defineClass1(Native Method)
    2. java.lang.ClassLoader.defineClass(ClassLoader.java:620)
    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$1.run(URLClassLoader.java:195)
    7. java.security.AccessController.doPrivileged(Native Method)
    8. java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    9. java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    10. sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
    11. java.lang.ClassLoader.loadClass(ClassLoader.java:251)
    11 frames
  3. Ant
    AntClassLoader.loadClass
    1. org.apache.tools.ant.AntClassLoader.findBaseClass(AntClassLoader.java:1197)
    2. org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:973)
    2 frames
  4. Java RT
    Class.forName
    1. java.lang.ClassLoader.loadClass(ClassLoader.java:251)
    2. java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
    3. java.lang.Class.forName0(Native Method)
    4. java.lang.Class.forName(Class.java:242)
    4 frames
  5. Ant
    Main.main
    1. org.apache.tools.ant.taskdefs.Definer.addDefinition(Definer.java:457)
    2. org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:183)
    3. org.apache.tools.ant.taskdefs.Antlib.execute(Antlib.java:161)
    4. org.apache.tools.ant.Task.perform(Task.java:364)
    5. org.apache.tools.ant.taskdefs.Definer.loadAntlib(Definer.java:330)
    6. org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:236)
    7. org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
    8. org.apache.tools.ant.Task.perform(Task.java:364)
    9. org.apache.tools.ant.Target.execute(Target.java:341)
    10. org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:142)
    11. org.apache.tools.ant.ProjectHelper.configureProject(ProjectHelper.java:91)
    12. org.apache.tools.ant.Main.runBuild(Main.java:653)
    13. org.apache.tools.ant.Main.startAnt(Main.java:187)
    14. org.apache.tools.ant.Main.start(Main.java:150)
    15. org.apache.tools.ant.Main.main(Main.java:240)
    15 frames