线程示例

class Ticket implements Runnable{
	private int num = 100;
	Object obj = new Object();
	public void run(){
		while(true){
			synchronized(obj){
				if(num>0){
					try{
						Thread.sleep(10);
					}catch(InterruptedException e){}
					System.out.println(Thread.currentThread().getName()+"..sale.."+num--);
				}
			}
		}
	}
}
class SaleTicket{
	public static void main(String[] args){
		Ticket t = new Ticket();
		Thread s1 = new Thread(t);
		Thread s2 = new Thread(t);
		Thread s3 = new Thread(t);
		s1.start();
		s2.start();
		s3.start();
	}
}