How To Fix LinkageError when using JAXB with JDK 1.6

If you run across an error like this when trying to use JAXB:

java.lang.LinkageError: JAXB 2.0 API is being loaded from the bootstrap classloader, but this RI
(from jar:file:/somedirectory/jaxb-impl.jar!/com/sun/xml/bind/v2/model/impl/ModelBuilder.class) needs 2.1 API. Use the endorsed directory mechanism to place jaxb-api.jar in the bootstrap classloader. (See http://java.sun.com/j2se/1.5.0/docs/guide/standards/)

This is apparently only a problem with JDK 1.6, not with JDK 1.5. It can be fixed by setting the JRE to 1.6.21 or 1.6.24 patches and not the 1.6 version

It can als be fixed by putting the jaxb-api.jar that you're trying to use into JDK_HOME/jre/lib/endorsed. If the endorsed directory doesn't exist, make it.