java.lang.ClassFormatError

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    • java.lang.ClassFormatError: Unknown constant tag in class file at sun.net.www.protocol.file.Handler.openConnection(Unknown Source) at java.net.URL.openConnection(Unknown Source) at java.net.URLClassLoader.getPermissions(Unknown Source) at sun.misc.Launcher$AppClassLoader.getPermissions(Unknown Source) at java.security.SecureClassLoader.getProtectionDomain(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.access$100(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClassInternal(Unknown Source)
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