子线程循环10次,接着主线程循环100,接着又回到子线程循环10次,接着再回到主线程又循环100,如此循环50次 public class ThreadTest { public static void main(String[] args) { new ThreadTest().init(); } public void init() { final Business business = new Business(); new Thread( new Runnable() { public void run() { for(int i=0;i<50;i++) { business.SubThread(i); } } } ).start(); for(int i=0;i<50;i++) { business.MainThread(i); } } private class Business { boolean bShouldSub = true;//这里相当于定义了控制该谁执行的一个信号灯 public synchronized void MainThread(int i) { if(bShouldSub) try { this.wait(); } catch (InterruptedException e) { e.printStackTrace(); } for(int j=0;j<5;j++) { System.out.println(Thread.currentThread().getName() + ":i=" + i +",j=" + j); } bShouldSub = true; this.notify(); } public synchronized void SubThread(int i) { if(!bShouldSub) try { this.wait(); } catch (InterruptedException e) { e.printStackTrace(); } for(int j=0;j<10;j++) { System.out.println(Thread.currentThread().getName() + ":i=" + i +",j=" + j); } bShouldSub = false; this.notify(); } } }
如果不在用synchronized的话,那还可以怎么写,我这个个人觉得效率不高,希望大家可以给我出个好主意??? |