线程交替输出

来源：互联网发布：唐山关键字优化公司编辑：程序博客网时间：2024/06/05 07:25

启动三个线程打印递增数字，线程1先打印1,2,3,4,5 然后是线程2打印6,7,8,9,10然后是线程3打印出11,12,13,14,15.接着在由线程1打印16,17,18,19,20.以此类推打印到75.代码如下：

package com.test;public class MyFirstThread {    private static CommonObj lock;    public static void main (String[] args){        lock =new CommonObj(0,1);        Thread thread1 = new Thread(new  FirstRunnable(lock,1,2),"线程1");        Thread thread2 = new Thread(new  FirstRunnable(lock,2,3),"线程2");        Thread thread3 = new Thread(new  FirstRunnable(lock,3,1),"线程3");        thread1.start();        thread2.start();        thread3.start();    }}package com.test;public class CommonObj {    private  int n;    private  int status;    public CommonObj(int n ,int status){        this.n = n;        this.status = status;    }    public  int getN() {        return n;    }    public  void setN(int n) {        this.n = n;    }    public  int getStatus() {        return status;    }    public  void setStatus(int status) {        this.status = status;    }    public int addN(int no){        return n=n+no;    }}package com.test;public class FirstRunnable implements Runnable {    private  CommonObj lock ;    private int currentStatuc;    private int nextStatus;    public  FirstRunnable (CommonObj lock,int currentStatuc,int nextStatus){        this.lock = lock;        this.currentStatuc = currentStatuc;        this.nextStatus = nextStatus;    }    @Override    public void run() {        for(int j=0;j<5;j++){            synchronized (lock){                while(lock.getStatus()!=currentStatuc){                    try {                        lock.wait();                    } catch (InterruptedException e) {                        e.printStackTrace();                    }                }                lock.setStatus(nextStatus);                for(int i=0;i<5;i++){                    System.out.println(Thread.currentThread().getName()+"now Number : "+lock.addN(1)+" currentStatuc "+currentStatuc+" nextStatus "+nextStatus);                }                lock.notifyAll();                System.out.println(" lock.getStatus "+lock.getStatus());            }        }    }    public CommonObj getLock() {        return lock;    }    public void setLock(CommonObj lock) {        this.lock = lock;    }    public int getNextStatus() {        return nextStatus;    }    public void setNextStatus(int nextStatus) {        this.nextStatus = nextStatus;    }}

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