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java.lang.NoClassDefFoundError: java/util/HashSet at com.inprise.vbroker.orb.ORB.<init>(ORB.java:81) at org.omg.CORBA.ORB.create_impl(ORB.java) at org.omg.CORBA.ORB.init(ORB.java) at com.inprise.vbroker.naming.ExtFactory.main(ExtFactory.java:126)