package thread2;

class TestThread {
	     public   void execute(){  //synchronized,未修飾
         for(int i=0;i<20;i++){
        	try {
				Thread.sleep(100);     //比thread1 包中多出來的一句話1!!!!!!!!!!!!!!!!!!!!
			} catch (InterruptedException e) {
			
				e.printStackTrace();
			}
            System.out.println(Thread.currentThread().getName()+Thread.currentThread().getName()+"    "+i);
	        }    
    }
}

 class ThreadA implements Runnable{
         TestThread test=null;
	    public ThreadA(TestThread pTest){  //對象有外部引入，這樣保證是同一個對象
             test=pTest;
        }
        public void run() {
            test.execute();
}
    }
public class Thread_2{
			public static void main(String[] args){
				 TestThread test=new TestThread();
				 Runnable runabble=new ThreadA(test);
				 Thread a=new Thread(runabble,"A");                
				 a.start();
				 Thread b=new Thread(runabble,"B");
				 b.start();
      }
			}