XMLBeans is part of the WSRFlite distribution, so you can get started quickly. With an ant script, you can compile your schemas easily.
The following ant snippet compiles a schema file, writes the generated binaries to the "classes" folder and the XMLbeans source files to the "xmlbeans-source" folder.
<target name="xmlbeans">
<java classname="org.apache.xmlbeans.impl.tool.SchemaCompiler"
classpathref="...TODO...."
fork="true">
<arg value="-dl"/>
<arg value="-noupa"/>
<arg value="-src"/>
<arg value="xmlbeans-source"/>
<arg value="-d"/>
<arg value="classes"/>
<arg value="schema/example.xsd"/>
</java>
</target>
The classpath contains the jar files found in the WSRFlite lib folder. A working ant file can be found as "doc/example/build.xml".