Java线程||线程让步yield()及curentThread()方法的作用

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我是靠谱客的博主忧虑母鸡，最近开发中收集的这篇文章主要介绍Java线程||线程让步yield()及curentThread()方法的作用，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

yield()

yield()的作用是让步。它能让当前线程由“运行状态”进入到“就绪状态”，从而让其它具有相同优先级的等待线程获取执行权；但是，并不能保证在当前线程调用yield()之后，其它具有相同优先级的线程就一定能获得执行权；也有可能是当前线程又进入到“运行状态”继续运行！

curentThread()方法的定义：

curentThread() 方法可返回代码段正在被哪个线程调用的信息，若用户未进行命名则系统会自动生成一个命名。

class TH1 extends Thread{

    TH1(){
        super.setName ("让步线程");
    }
    @Override
    public void run() {
        while (true){
            Thread.yield ();//当前线程让步，执行的少
            System.out.println (this.getName());
        }
    }
}

class TH2 implements Runnable{
    @Override
    public void run() {
        while (true){
            System.out.println (Thread.currentThread ().getName ());//Thread.currentThread ()获得当前线程的引用。
        }
    }
}

public class takeoff {
    public static void main(String[] args) {
        TH1 t = new TH1 ();
        t.start ();
        TH2 th = new TH2 ();
        Thread t1 = new Thread (th);
        t1.start ();
    }
}

执行结果（片段）：

Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
Thread-1
让步线程