如果用Runnable就可以实现资源共享[Java多线程]
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class MyThread extends Thread{ private int ticket=10; public void run(){ for(int i=0;i<20;i++){ if(this.ticket>0){ System.out.println("卖票:ticket"+this.ticket--); } } } }public class ThreadTicket { public static void main(String[] args) { MyThread mt1=new MyThread(); MyThread mt2=new MyThread(); MyThread mt3=new MyThread(); mt1.start();//每个线程都各卖了10张,共卖了30张票 mt2.start();//但实际只有10张票,每个线程都卖自己的票 mt3.start();//没有达到资源共享 } } /*卖票:ticket10卖票:ticket10卖票:ticket9卖票:ticket9卖票:ticket8卖票:ticket10卖票:ticket7卖票:ticket8卖票:ticket6卖票:ticket9卖票:ticket5卖票:ticket7卖票:ticket4卖票:ticket8卖票:ticket7卖票:ticket6卖票:ticket5卖票:ticket4卖票:ticket3卖票:ticket2卖票:ticket6卖票:ticket1卖票:ticket3卖票:ticket2卖票:ticket1卖票:ticket5卖票:ticket4卖票:ticket3卖票:ticket2卖票:ticket1请按任意键继续. . .*/
//如果用Runnable就可以实现资源共享,下面看例子: class MyThread implements Runnable{ private int ticket=10; public void run(){ for(int i=0;i<20;i++){ if(this.ticket>0){ System.out.println("卖票:ticket"+this.ticket--); } } } } public class RunnableTicket { public static void main(String[] args) { MyThread mt=new MyThread(); new Thread(mt).start();//同一个mt,但是在Thread中就不可以,如果用同一 new Thread(mt).start();//个实例化对象mt,就会出现异常 new Thread(mt).start(); } }//虽然现在程序中有三个线程,但是一共卖了10张票,也就是说使用Runnable实现多线程可以达到资源共享目的。/*卖票:ticket10卖票:ticket8卖票:ticket6卖票:ticket9卖票:ticket5卖票:ticket7卖票:ticket3卖票:ticket1卖票:ticket4卖票:ticket2请按任意键继续. . .*/