The JCK1.2 tests for UnicastRemoteObject.exportObject(obj,port, socketType) where
obj and port are valid parameters but socketType was created as follows:-
      SocketType socketType=new SocketType("junk", data, null) where "junk" is
         an invalid protocol.

results in an infinite loop creating the serversocket again and again..

The source for the test is question can be found in JCK1.2 under
       tests/api/java_rmi/server/UnicastRemoteObject/ExpObjTests.java (test0004).