Help student to convert Xml to Java

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Hi,I'm a studentDoes exists a free Java program that convert Uml class Diagram in a Javaclass, using Sax Dom or XSLT because the Uml diagrams are exported in Xmlby Xmi?? (I use Rational Rose to make class diagram and export to Xml usinga Unisys tool, then i would like to use Java Sax or Dom to create the interfaceof the class from the Xml file)Thank youMarco