myRunning = true;
  public IMConnectionTester(IInstantMessenger _watcher, IInstantMessenger _watched, long _pingPongFrequencyMillis, long _timeoutMillis) {    myPingPongMessageLock = new Object();    myWatcher = _watcher;    myWatched = _watched;    myPingPongFrequencyMillis = _pingPongFrequencyMillis;    myTimeoutMillis = _timeoutMillis;    synchronized (myPingPongMessageLock) {      myWatched.addMessageListener(this);      myWatcher.addMessageListener(this);    }  }