1 package day11.lesson1.p4;
2
3 /*
4 1.5 线程控制
5
6 static void sleep(long millis) 使当前正在执行的线程停留（暂停执行）指定的毫秒数
7 void join() 等待这个线程死亡
8 void setDaemon(boolean on) 将此线程标记为守护线程，当运行的线程都是守护线程时，Java虚拟机将退出
9
10 */
11 public class ThreadSleep extends Thread{
12 @Override
13 public void run() {
14 for (int i=0; i<20; i++){
15 System.out.println(getName() + ":" + i);
16
17 try {
18 Thread.sleep(1000); //
19 } catch (InterruptedException e) {
20 e.printStackTrace();
21 }
22 }
23 }
24 }
25
26 class ThreadSleepDemo{
27 public static void main(String[] args) {
28 ThreadSleep ts1 = new ThreadSleep();
29 ThreadSleep ts2 = new ThreadSleep();
30 ThreadSleep ts3 = new ThreadSleep();
31
32 ts1.setName("曹操");
33 ts2.setName("刘备");
34 ts3.setName("孙权");
35
36 ts1.start();
37 ts2.start();
38 ts3.start();
39 /*
40 设置sleep()之前输出：三者混杂且随机
41 设置sleep()之后输出：三者均衡
42 曹操:0
43 孙权:0
44 刘备:0
45 曹操:1
46 孙权:1
47 刘备:1
48 曹操:2
49 刘备:2
50 孙权:2
51 刘备:3
52 孙权:3
53 曹操:3
54 孙权:4
55 曹操:4
56 刘备:4
57 */
58 }
59 }
1 package day11.lesson1.p4;
2
3 /*
4 void join() 等待这个线程死亡
5 例：两位皇子争夺皇位，需等待老皇帝驾崩
6 */
7 public class ThreadJoin extends Thread{
8 @Override
9 public void run() {
10 for (int i=0; i<20; i++){
11 System.out.println(getName() + ":" + i);
12 }
13 }
14 }
15
16 class ThreadJoinDemo{
17 public static void main(String[] args) {
18 ThreadJoin tj1 = new ThreadJoin();
19 ThreadJoin tj2 = new ThreadJoin();
20 ThreadJoin tj3 = new ThreadJoin();
21
22 tj1.setName("老皇帝");
23 tj2.setName("皇子1号");
24 tj3.setName("皇子2号");
25
26 tj1.start();
27 try {
28 tj1.join(); //tj1线程执行完毕后，tj2和tj3线程才能执行
29 } catch (InterruptedException e) {
30 e.printStackTrace();
31 }
32
33 tj2.start();
34 tj3.start();
35 }
36 }
1 package day11.lesson1.p4;
2
3 /*
4 void setDaemon(boolean on) 将此线程标记为守护线程，当运行的线程都是守护线程时，Java虚拟机将退出
5 例：桃园三结义不求同年同月同日生，但求同年同月同日死，假如刘备没了，则关张也不再苟活
6 */
7 public class ThreadDaemon extends Thread{
8 @Override
9 public void run() {
10 for (int i=0; i<100; i++){
11 System.out.println(getName() + ":" + i);
12 }
13 }
14 }
15
16 class ThreadDaemonDemo{
17 public static void main(String[] args) {
18 ThreadDaemon td1 = new ThreadDaemon();
19 ThreadDaemon td2 = new ThreadDaemon();
20
21 td1.setName("关羽");
22 td2.setName("张飞");
23
24 //设置主线程为刘备
25 Thread.currentThread().setName("刘备");
26 //设置守护线程
27 td1.setDaemon(true);
28 td2.setDaemon(true);
29
30 td1.start();
31 td2.start();
32
33 for (int i=0; i<10; i++){
34 System.out.println(Thread.currentThread().getName() + ":" + i);
35 }
36 }
37 }
