利用面向对象的思想实现主从线程下多次循环的切换（因为他们要同步，所以他们是有关联的，所以把它们放在一个类里）

import java.util.concurrent.atomic.AtomicInteger;

public class TraditionalThreadCommunication {

    /**
     * @param args
     */
    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 bShouldSub = true;
      public synchronized void sub(int i){
          while(!bShouldSub){
              try {
                this.wait();
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
          }
            for(int j=1;j<=10;j++){
                System.out.println("sub thread sequence of " + j + ",loop of " + i);
            }
          bShouldSub = false;
          this.notify();
      }
      
      public synchronized void main(int i){
              while(bShouldSub){
                  try {
                    this.wait();
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
              }
            for(int j=1;j<=100;j++){
                System.out.println("main thread sequence of " + j + ",loop of " + i);
            }
            bShouldSub = true;
            this.notify();
      }
  }