java.lang.ClassFormatError: Method "<error>" in class helloworld/Helloworld has illegal signature "(Ljava/lang/Object;)Lprintln;"

Stack Overflow | ski | 2 months ago
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    Java compile error (edited)?

    Stack Overflow | 2 months ago | ski
    java.lang.ClassFormatError: Method "<error>" in class helloworld/Helloworld has illegal signature "(Ljava/lang/Object;)Lprintln;"
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    Coderanch | 7 months ago | David Vorpe
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    Eclipse Bugzilla | 4 years ago | srikanth_sankaran
    java.lang.ClassFormatError: bootstrap_method_index 36 has bad constant type in class file X

  1. esaar 8 times, last 9 months ago
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Root Cause Analysis

  1. java.lang.ClassFormatError

    Method "<error>" in class helloworld/Helloworld has illegal signature "(Ljava/lang/Object;)Lprintln;"

    at java.lang.ClassLoader.defineClass1()
  2. Java RT
    LauncherHelper.checkAndLoadMain
    1. java.lang.ClassLoader.defineClass1(Native Method)
    2. java.lang.ClassLoader.defineClass(ClassLoader.java:763)
    3. java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    4. java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
    5. java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    6. java.net.URLClassLoader$1.run(URLClassLoader.java:368)
    7. java.net.URLClassLoader$1.run(URLClassLoader.java:362)
    8. java.security.AccessController.doPrivileged(Native Method)
    9. java.net.URLClassLoader.findClass(URLClassLoader.java:361)
    10. java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    11. sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    12. java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    13. sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495)
    13 frames