Mine

			}// From HERE			else if(questions.checkAnswer(message)) {				sendMessage(channel, "Congratulations " + sender + ", that's correct!");				quizTimer.cancel();				quizTimer = new Timer();				scheduleNewQuestion();			}			else {				if(questions.hintChanged()) {// to HERE must not be interrupted by the other thread!					sendMessage(channel, "Answer: " + questions.getHint());				}			}