public class SpecificNotification {
	
	void acquire(int t, boolean highPriority) {

	}
	void doSomething(int t){
		System.out.println("Thread "+t+" has resource");
		try {
			Thread.sleep(500);
		} catch (InterruptedException e) {		}
	}
	void release(int t, boolean highPriority){

	}
	/**
	 * PROGRAM
	 */
	public static void main(String[] args) throws InterruptedException {
		final SpecificNotification sn = new SpecificNotification();
		for(int t=0;t<4;t++){
			final int T=t;
			new Thread(){
				public void run(){
					for(int i=0;i<10;i++){
						sn.acquire(T, T<2); // threads 0 and 1 get priority
						sn.doSomething(T);
						sn.release(T, T<2);
						try {
							Thread.sleep(10);
						} catch (InterruptedException e) {		}
					}
					System.out.println("Thread "+T+" FINISHES");
				}
			}.start();	
		}
	}
}