java.lang.ClassFormatError: Unknown constant tag in class file

Oracle Community | 807595 | 1 decade ago
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    NOvice Problem HelloWorld

    Oracle Community | 1 decade ago | 807595
    java.lang.ClassFormatError: Unknown constant tag in class file
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    Google Groups | 1 decade ago | Obiwan2u
    java.lang.ClassFormatError: Unknown constant tag in . class file
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    java.lang.ClassFormatError: Truncated class file
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    hibernate project Code segment has wrong length in class file com/mysql/jdbc/PreparedStatement

    Stack Overflow | 3 years ago | user3663300
    java.lang.ClassFormatError: Code segment has wrong length in class file com/mysql/jdbc/PreparedStatement

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    Root Cause Analysis

    1. java.lang.ClassFormatError

      Unknown constant tag in class file

      at sun.net.www.protocol.file.Handler.openConnection()
    2. Java RT
      ClassLoader.loadClassInternal
      1. sun.net.www.protocol.file.Handler.openConnection(Unknown Source)
      2. java.net.URL.openConnection(Unknown Source)
      3. java.net.URLClassLoader.getPermissions(Unknown Source)
      4. sun.misc.Launcher$AppClassLoader.getPermissions(Unknown Source)
      5. java.security.SecureClassLoader.getProtectionDomain(Unknown Source)
      6. java.security.SecureClassLoader.defineClass(Unknown Source)
      7. java.net.URLClassLoader.defineClass(Unknown Source)
      8. java.net.URLClassLoader.access$100(Unknown Source)
      9. java.net.URLClassLoader$1.run(Unknown Source)
      10. java.security.AccessController.doPrivileged(Native Method)
      11. java.net.URLClassLoader.findClass(Unknown Source)
      12. java.lang.ClassLoader.loadClass(Unknown Source)
      13. sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
      14. java.lang.ClassLoader.loadClass(Unknown Source)
      15. java.lang.ClassLoader.loadClassInternal(Unknown Source)
      15 frames