void takeTour() throws TooHotException, TooColdException {
		int temperature = (int) (Math.random() * 100);
		System.out.println("temperature = " + temperature);
		if (temperature > 60) {
			throw new TooHotException("Too hot here");
		} else if (temperature < 10) {
			throw new TooColdException("Too cold here");
		}
	}