详细分析java线程wait和notify

/**
 * <pre>
 * 子线程循环10次，接着主线程循环100次，接着有回到子线程循环10次，
 * 接着再回到主线程循环100次，如此执行50次
 * </pre>
 * @author ketqi
 */
 public class WaitNotifyDemo {
   public static void main(String[] args) {
 
     final Business business = new Business();
     new Thread(new Runnable() {
       @Override
       public void run() {
         for (int i = 1; i <= 50; i++) {
           business.sub(i);
         }
 
       }
     }).start();
 
     for (int i = 1; i <= 50; i++) {
       business.main(i);
     }
   }
 }
 
 class Business {
   private boolean isMainThread = true;
 
   public synchronized void sub(int i) {
     while (!isMainThread) {
       try {
         this.wait();
       } catch (InterruptedException e) {
         e.printStackTrace();
       }
     }
     for (int j = 1; j <= 10; j++) {
       System.out.println("sub thread sequence of " + j + ",loop of " + i);
    }
     isMainThread = false;
     this.notify();
   }
 
  public synchronized void main(int i) {
     while (isMainThread) {
       try {
        this.wait();
       } catch (InterruptedException e) {
         e.printStackTrace();
       }
     }
     for (int j = 1; j <= 100; j++) {
       System.out.println("main thread sequence of " + j + ",loop of " + i);
     }
     isMainThread = true;
     this.notify();
   }
 }