public void testOneList() throws TimeoutException {
public void testOneList() throws TimeoutException, UnknownHostException {
    public void testOneList() throws TimeoutException {        List tmp=new ArrayList();        Address addr=new IpAddress("127.0.0.1", 5555);        tmp.add(addr);        AckCollector coll=new AckCollector(null, tmp);        coll.ack(addr);        coll.waitForAllAcks(1000);    }