java.lang.ClassFormatError: DirectoryZipFTP (Illegal constant pool type)

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Oracle Community by 807555, 1 year ago
DirectoryZipFTP (Illegal constant pool type)
via javafaq.nu by Unknown author, 1 year ago
via Oracle Community by 843811, 1 year ago
Main (Illegal constant pool type)
via Oracle Community by 807546, 3 months ago
HelloWorldSwing (Illegal constant pool type)
via Oracle Community by 807554, 1 year ago
Welcome (Illegal constant pool type)
via javaspecialists.eu by Unknown author, 1 year ago
BigString (Illegal constant pool type)
java.lang.ClassFormatError: DirectoryZipFTP (Illegal constant pool type)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:486)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:248)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:297)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)

Users with the same issue

You are the first who have seen this exception. Write a tip to help other users and build your expert profile.

Know the solutions? Share your knowledge to help other developers to debug faster.