Java线程SleepYieldJoin

对线程执行的基本操作

代码结构

源码

package com.myspringboot.juc.c01thread;

public class SleepYieldJoinTest {
     
    public static void main(String[] args) {
     
        testSleep();
        //  testYield();
        //  testJoin();
    }

    // 当前睡眠指定时间
    private static void testSleep() {
     
        new Thread(() -> {
     
            for (int i = 0; i < 10; i++) {
     
                System.out.println("testSleep---------A" + i);
                try {
     
                    Thread.sleep(500);
                    //TimeUnit.Milliseconds.sleep(500);
                } catch (InterruptedException e) {
     
                    e.printStackTrace();
                }
            }
        }).start();
    }

    // 当前线程让出CPU一瞬间，但是自己也会争强
    private static void testYield() {
     
        new Thread(() -> {
     
            for (int i = 0; i < 10; i++) {
     
                System.out.println("testYield---------A" + i);
                if (i % 2 == 0) Thread.yield();
            }
        }).start();

        new Thread(() -> {
     
            for (int i = 0; i < 10; i++) {
     
                System.out.println("testYield---------B" + i);
                if (i % 2 == 0) Thread.yield();
            }
        }).start();
    }

    // 将当前线程t1加入到线程t2中，当前线程t1运行结束，线程t2才接着执行
    private static void testJoin() {
     
        Thread t1 = new Thread(() -> {
     
            for (int i = 0; i < 10; i++) {
     
                System.out.println("testJoin----------A" + i);
                try {
     
                    Thread.sleep(500);
                    //TimeUnit.Milliseconds.sleep(500);
                } catch (InterruptedException e) {
     
                    e.printStackTrace();
                }
            }
        });

        Thread t2 = new Thread(() -> {
     
            try {
     
                t1.join();
            } catch (InterruptedException e) {
     
                e.printStackTrace();
            }

            for (int i = 0; i < 10; i++) {
     
                System.out.println("testJoin----------B" + i);
                try {
     
                    Thread.sleep(500);
                    //TimeUnit.Milliseconds.sleep(500)
                } catch (InterruptedException e) {
     
                    e.printStackTrace();
                }
            }
        });

        t1.start();
        t2.start();
    }
}