try {
      Session curSession = pfcGlobal.GetProESession();
      String startModelDir = "C:\\ptc\\local\\creo\\start_models\\";
      String startModel = "mmg_part_solid.prt"; // could be an assembly or part template model
      ModelDescriptor desc = null;
      curSession.GetCurrentWindow().Activate();
      desc = pfcModel.ModelDescriptor_CreateFromFileName(startModel);
      desc.SetPath (startModelDir);
      Model em = curSession.RetrieveModelWithOpts(desc,pfcSession.RetrieveModelOptions_Create());
      Model am = em.CopyAndRetrieve("test_new.prt" ,null); //New part to be named would go here
      am.Display();
      JOptionPane.showMessageDialog(null, "Done");
} catch (jxthrowable x){
     JOptionPane.showMessageDialog(null, x.getMessage()"\n"+x.getStackTrace());
}