线程状态--休眠

package state;
//模拟网络延时的作用：放大问题发生的可能性
public class TestSleep implements Runnable{
    private int ticket = 10;

    @Override
    public void run() {
        while (true){
            if(ticket<=0){
                break;
            }
            try {
                Thread.sleep(100);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
            System.out.println(Thread.currentThread().getName()+"获得了第"+ticket--+"张票");
        }
    }

    public static void main(String[] args) {
        TestSleep testSleep = new TestSleep();
        new Thread(testSleep ,"小明").start();
        new Thread(testSleep ,"小蓝").start();
        new Thread(testSleep ,"小红").start();
        new Thread(testSleep ,"小三").start();
        //System.out.println(testSleep .ticket);
    }


}

package state;

import java.text.SimpleDateFormat;
import java.util.Date;

public class TestSleep2 {
    public static void main(String[] args) {
//        try {
//            tenDown();
//        } catch (InterruptedException e) {
//            throw new RuntimeException(e);
//        }

        systemTime();


    }



    //模拟倒计时方法
   public static void tenDown() throws InterruptedException {
        int num = 10;
        while (num>=0){
            System.out.println(num--);
            Thread.sleep(1000);

        }

    }

    public static void systemTime(){
        Date date = new Date(System.currentTimeMillis());//获取系统当前时间
        int num = 10;
        while (num>=0){
            try {
                Thread.sleep(100);
                System.out.println(new SimpleDateFormat("HH:mm:ss").format(date));
                date = new Date(System.currentTimeMillis());//更新时间
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            } finally {
            }
            num--;
        }

    }
}