JAVA练习 ：公交车，司机和售票员信号量问题

JAVA练习 ：公交车，司机和售票员信号量问题

import java.util.concurrent.Semaphore;
public class BusTest {

	public static void main(String[] args)throws Exception{
		
		Semaphore doorClosed = new Semaphore(1);
		Semaphore carStoped = new Semaphore(1);
		
		
		new Thread(){			
			public void run(){
				try {
					//初始车是停的
					carStoped.acquire();
					while(true){					
						doorClosed.acquire();
					
						System.out.println("司机：乘客上完了，开车。");
						Thread.sleep(1000);
						System.out.println("司机：到站了，停车。");
						Thread.sleep(1000);
						carStoped.release();					
					}
			
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}.start();
		
		new Thread(){			
			public void run(){
				while(true){
					try {
						carStoped.acquire();					
						System.out.println("售票员：开门了。");
						Thread.sleep(1000);
						System.out.println("售票员：买票了。");
						Thread.sleep(1000);
						System.out.println("售票员：关门了。");
						Thread.sleep(1000);
						doorClosed.release();
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
			}
		}.start();
	}

}