具体如下：

/** * 两个案例同时运行案例 * 1:这个两个线程并不是有规律的运行而是有没有规律的交替运行 */package com.test3;public class Demo10_3 {    /**     * @param args     */    public static void main(String[] args) {        // TODO Auto-generated method stub        Pig pig=new Pig(10);        Bird bird=new Bird(10);        Thread t1=new Thread(pig);        Thread t2=new Thread(bird);        t1.start();        t2.start();    }}//打印class Pig implements Runnable{    int n=0;    int times=0;    public Pig(int n)    {        this.n=n;    }    public void run()    {        while(true)        {            try {                Thread.sleep(1000);            } catch (Exception e) {                // TODO: handle exception            }            times++;            System.out.println("猪说我是一个线程，在输出第"+times+"个hello, word");            if(times==n)            {                break;            }        }    }}//算数学class Bird implements Runnable{    int n=0;    int res=0;    int times=0;    public Bird(int n)    {        this.n=n;    }    public void run()    {        while(true)        {            try {                Thread.sleep(1000);            } catch (Exception e) {                // TODO: handle exception            }            res+=(++times);            System.out.println("鸟算的当前结果是"+res);            if(times==n)            {                System.out.println("最后结果是"+res);                break;            }        }    }}