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Main.java

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package thread;

import java.util.stream.IntStream;

class ThreadPrint extends java.lang.Thread {

@Override

public void run(){

try {

sleep((int) (Math.random() * 100));

} catch (InterruptedException e) {

e.printStackTrace();

}

System.out.println("自定义线程");

}

}

class ThreadFor implements Runnable{

@Override

public void run(){

IntStream.range(1,5).forEach(System.out::println) ;

}

}

class ThreadYield extends Thread {

public ThreadYield(String name) {

super(name);

}

@Override

public void run() {

for (int i = 1; i <= 5; i++) {

System.out.println("" + this.getName() + "-----" + i);

// 当i为3时，该线程就会把CPU时间让掉，让其他或者自己的线程执行（也就是谁先抢到谁执行）

if (i == 3) {

Thread.yield();

}

}

}

}

public class Main {

public static void main(String[] args) throws InterruptedException {

ThreadPrint t = new ThreadPrint();

t.start();

Thread ti = new Thread(new ThreadFor());

ti.start();

ThreadYield yt1 = new ThreadYield("张三");

ThreadYield yt2 = new ThreadYield("李四");

yt1.start();

yt2.start();

t.join();

ti.join();

yt1.join();

yt2.join();

System.out.println("main");

}

}