关于迅雷的线程题,再发一贴

package pcenshao.thread;



import java.util.concurrent.Semaphore;



public class SemaphoreABC {

	

	static class T extends Thread{

		

		Semaphore me;

		Semaphore next;

		

		public T(String name,Semaphore me,Semaphore next){

			super(name);

			this.me = me;

			this.next = next;

		}

		

		@Override

		public void run(){

			for(int i = 0 ; i < 10 ; i ++){

				try {

					me.acquire();

				} catch (InterruptedException e) {

					e.printStackTrace();

				}

				System.out.println(this.getName());

				next.release();

			}

		}

	}

	

	public static void main(String[] args) {

		Semaphore aSem = new Semaphore(1);

		Semaphore bSem = new Semaphore(0);

	    Semaphore cSem = new Semaphore(0);

		

	    T a = new T("A",aSem,bSem);

	    T b = new T("B",bSem,cSem);

	    T c = new T("C",cSem,aSem);

	    

	    a.start();

	    b.start();

	    c.start();

	}

}