public class ThreadDemo03 implements Runnable {

//Th1线程执行的方法

@Override

public void run() {

for(int i=0;i<10;i++){

System.out.println( Thread.currentThread().getName()+":"+i );

if(i == 3){

Thread.yield();

System.out.println("礼让....");

}

}

}

//线程th1:执行“ T1:数字”

//线程main：执行“ main:数字”

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

ThreadDemo03 t1 = new ThreadDemo03();

Thread th1 = new Thread(t1,"T1") ;

th1.start();

ThreadDemo03 t2 = new ThreadDemo03();

Thread th2 = new Thread(t2,"T2") ;

th2.start();

//main线程

// for(int i=0;i<10;i++){

// System.out.println( Thread.currentThread().getName()+":"+i );

// if(i==3){

//// th1.join(); //main线程正在执行时（执行到i=3时）， th1强制抢夺执行

// Thread.yield(); //主动礼让给其他线程

// }

// }

}

}