Search
Calendar
May 2025
S M T W T F S
« Apr    
 123
45678910
11121314151617
18192021222324
25262728293031
Archives

Posts Tagged ‘IncompatibleClassChangeError’

PostHeaderIcon java.lang.IncompatibleClassChangeError: Implementing class

Case: on a call to:
JAXBContext.newInstance(Field.class, FieldSet.class);
I had a:
java.lang.IncompatibleClassChangeError: Implementing class

Complete stacktrace:

java.lang.IncompatibleClassChangeError: Implementing class
 at java.lang.ClassLoader.defineClass1(Native Method)
 at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
 at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
 at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
 at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
 at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
 at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
 at java.lang.ClassLoader.defineClass1(Native Method)
 at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
 at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
 at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
 at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
 at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
 at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
 at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:139)
 at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:117)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:210)
 at javax.xml.bind.ContextFinder.find(ContextFinder.java:368)
 at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:574)
 at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:522)
(...)

Fix: there an issue of classpath and a conflit of jars. Remove all jaxb-* jars from within your classpath, except the jaxb-impl.jar that you must keep.