多线程卖火车票简单例子

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import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;

public class JavaTest {

	public static void main(String[] args) {
		SaleTicket st = new SaleTicket();
		Thread t1 = new Thread(st, "一号窗口");
		Thread t2 = new Thread(st, "二号窗口");
		Thread t3 = new Thread(st, "三号窗口");
		Thread t4 = new Thread(st, "四号窗口");
		t1.start();
		t2.start();
		t3.start();
		t4.start();
	}
}

class SaleTicket extends Thread {// sale英 [seɪl] n.拍卖;卖，出卖;
	private int tickets = 100;

	@Override
	public void run() {
		while (tickets > 0) {
			sale();
		}
	}

	private synchronized void sale() {// synchronized 同步。
		if (tickets > 0) {
			System.out.println(Thread.currentThread().getName() + "卖出了第"
					+ (100 - tickets + 1) + "张票");
			tickets--;

			try {
				Thread.sleep(500);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}// 假设购票过程需要500毫秒。

		}
	}
}