线程的礼让

线程的礼让<?xml version="1.0" encoding="UTF-8"?>

线程礼让是指当前正在运行的线程退出运行状态，暂时将运行权让给优先级相同或更高的线程。

调用yield（）方法实现礼让，他会将当前程序转到就绪状态。

yield（）方法不抛出任何异常。

class Test1 implements Runnable {

     public void run (){

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

    System . out . println ( "running thread: " + Thread . currentThread (). getName () + ", i = " + i );

    Thread . currentThread (). yield ();

     }

     }

}

class Test2 implements Runnable {

     public void run (){

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

     System . out . println ( "running thread: " + Thread . currentThread (). getName () + ", i = " + i );

     }

     }

}

public class ThreadDemo11 {

     public static void main ( String [] args ){

    Test1 t1 = new Test1 ();

    Thread th1 = new Thread ( t1 , "Thread-1" );

    Test2 t2 = new Test2 ();

    Thread th2 = new Thread ( t2 , "Thread-2" );

    th1 . start ();

    th2 . start ();

    }

}

                        

从理论上，t1线程运行的几率要小于t2线程，因为t1总是让其它线程先执行

来自为知笔记(Wiz)

转载于:https://www.cnblogs.com/ZhangJinkun/p/fd09e2ebe4c6017f25f63652ff08b93a.html