//多生产多消费 class resource //将共有资源封装 { private String name; private int count=1; private boolean flag=false; public synchronized void set(String name)//同步set方法 { if (flag)//如果为假,生产烤鸭,如果为真,等待 { try{this.wait();}catch(InterruptedException e){} } this.name=name+count; count++; System.out.println(Thread.currentThread().getName()+".生产者..."+this.name); flag=true; notifyAll();//防止死锁问题,唤醒线程池中的全部线程 } public synchronized void out()//同步out方法 { if (!flag)//如果为真,消费烤鸭,如果为假,等待 { try{this.wait();}catch(InterruptedException e){} } System.out.println(Thread.currentThread().getName()+".....消费者"+this.name); flag=false; notifyAll();//防止死锁问题,唤醒线程池中全部线程 } } class producer implements Runnable { private resource r;//不同的方法访问一个资源 producer(resource r) { this.r=r; } public void run() { while (true) { r.set("烤鸭"); } } } class consumer implements Runnable { private resource r; consumer(resource r) { this.r=r; } public void run() { while (true) { r.out(); } } } class test { public static void main(String[] args) { resource r=new resource();//为不同的方法设置同一个资源 producer p1= new producer(r); consumer c1=new consumer(r); //创造线程 Thread t1=new Thread(p1); Thread t2=new Thread(p1); Thread t3=new Thread(c1); Thread t4=new Thread(c1); //开启线程 t1.start(); t2.start(); t3.start(); t4.start(); } }
打印结果为