要求:子线程循环10次后主线程循环100次之后子线程循环10次.....如此往复50次

　　子线程的每次执行10次不许被打断以及主线程的每次100次不许被打断 所以这两个操作可以加上同步所

　　

1 package com.thread; 2  3 public class ThreadTest2 { 4     public static void main(String[] args) { 5         final Output output = new Output(); 6         new Thread(new Runnable() { 7              8             @Override 9             public void run() {10                 for(int i=1;i<=50;i++){11                     output.printSub(i);12                 }13             }14         }).start();15         new Thread(new Runnable() {16             @Override17             public void run() {18                 for(int i=1;i<=50;i++){19                     output.printMain(i);20                 }21             }22         }).start();23     }24 }25 class Output{26     private boolean isSub = true;27     public synchronized void printSub(int j){28         while(!isSub){29             try {30                 this.wait();31             } catch (InterruptedException e) {32                 // TODO Auto-generated catch block33                 e.printStackTrace();34             }35         }36         for(int i=1;i<=10;i++){37             System.out.println("子线程打印:"+i+"-----"+j);38         }39         isSub = false;40         this.notifyAll();41     }42     public synchronized void printMain(int j){43         while(isSub){44             try {45                 this.wait();46             } catch (InterruptedException e) {47                 e.printStackTrace();48             }49         }50         for(int i=1;i<=100;i++){51             System.out.println("主线程打印:"+i+"*********"+j);52         }53         isSub = true;54         this.notifyAll();55     }56 }