Java

package cn.itcast;

import java.util.Stack;

class DoSomething implements Runnable {
    private String name;

    public DoSomething(String name) {
        this.name = name;
    }

    public void run() {
        // TODO Auto-generated method stub
        for(int i=0;i<5;i++){
            for(int k=0;k<20;k++){
                System.out.println(name+": "+i);
            }
        }
    }
}

public class Test01 extends Thread {
    public static void main(String[] args) {
        DoSomething ds1 = new DoSomething("zhang san");
        DoSomething ds2 = new DoSomething("li si");
        
        Thread t1 = new Thread(ds1);
        Thread t2 = new Thread(ds2);
        t1.start();
        t2.start();
    }

}

 - Thread.yield()方法作用是：暂停当前正在执行的线程对象，并执行其他线程。

 - 设置线程的优先级：线程默认的优先级是创建它的执行线程的优先级。可以通过setPriority(int newPriority)更改线程的优先级。

 - Thread的非静态方法join()让一个线程B“加入”到另外一个线程A的尾部