The run Thread ()

    　　. / * Run * the What by Will BE / 
    　　Private Runnable target; 
       if the thread passed a Runnable run object when created, the object's run method is called 
1      / ** 
2       * Constructed a using the If the this the Thread WAS A separate
 3       * <code> Runnable </ code> RUN Object, the then that
 4       * <code> Runnable </ code> Object's <code> RUN </ code> Method, IS Called; 
       otherwise, do nothing and return
 5       * otherwise, the this Method, and Returns Nothing does.
 . 6       * <P> 
　　　　the Thread subclasses should override this method 
 . 7       * subclasses of <code> the Thread </ code> should the override the this method.
 8      *
 9      * @see     #start()
10      * @see     #stop()
11      * @see     #Thread(ThreadGroup, Runnable, String)
12      */
13     @Override
14     public void run() {
15         if (target != null) {
16             target.run();
17         }
18     }