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JAXBContext - IncompatibleClassChangeError

 
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Hello:

Please help! What could be the problem?

I got the running time error for the following code:
JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );

ERROR:
java.lang.IncompatibleClassChangeError: Implementing class
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:488)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:106)
at com.evermind.naming.ContextClassLoader.defineClass(ContextClassLoader.java:993)
at com.evermind.naming.ContextClassLoader.findClass(ContextClassLoader.java:257)
at java.lang.ClassLoader.loadClass(ClassLoader.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:250)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:310)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at com.evermind.server.ApplicationContextClassLoader.findClass(ApplicationContextClassLoader.java:19)
at java.lang.ClassLoader.loadClass(ClassLoader.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:250)
at com.sun.xml.bind.ContextFactory_1_0_1.createContext(ContextFactory_1_0_1.java:45)
at java.lang.reflect.Method.invoke(Native Method)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:96)
at javax.xml.bind.ContextFinder.searchcontextPath(ContextFinder.java:229)
at javax.xml.bind.ContextFinder.find(ContextFinder.java:149)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:281)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:238)

...
 
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IncompatibleClassChangeError javadoc

Seems like you compiled your program using a different version of the library than the one you're using when you run the program. Check the build classpath and compare it to the run classpath.
 
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