Interrupting a Thread

[Paulo Freitas]

How can a Thread y interrupt a Thread x, if was x that has started Thread y?

[Marlene Miller]

X and Y are subclasses of Thread. An X object creates a Y object and starts the thread. The X object passes a reference to itself (a Thread object) to the Y object in the constructor.

class X extends Thread {
   public void run() {
      Thread x = Thread.currentThread();
      new Y(x).start();
      while(!isInterrupted())
         System.out.print("no");
      System.out.println(isInterrupted());
   }
   public static void main(String[] args) {
      new X().start();
   }
}
class Y extends Thread {
   Thread x;
   Y(Thread t) { x = t; }
   public void run() {
      x.interrupt();
   }
}
Output:
nononononotrue

X and Y implement Runnable. An X object creates a Y object. X passes a reference to the current thread in the constructor. X creates a Thread object and passes the Y object to the Thread object. X starts the thread.

class X implements Runnable {
   public void run() {
      Thread x = Thread.currentThread();
      new Thread(new Y(x)).start();
      while(!x.isInterrupted())
         System.out.print("no");
      System.out.println(x.isInterrupted());
   }
   public static void main(String[] args) {
      new Thread(new X()).start();
   }
}
class Y implements Runnable {
   Thread x;
   Y(Thread t) { x = t; }
   public void run() {
      x.interrupt();
   }
}
Output:
nonononononononotrue

[Paulo Freitas]

Thanks a lot Marlene. That was exactly what I wanted to know.

[Marlene Miller]

And thank you Paulo for letting me know I answered the question you were asking.

[bengt hammarlund]

Hi Marlene! I miss you!
Good news: I already got a job, and a good one. More details if you whant, email-me!
PS.: Paulo, are you from Brazil? I am Brazilian myself, and your name sound familiar.

[Paulo Freitas]

Right on the spot!!! I am brazilian(SP), but I have been living in Toronto/Canada for almost 2 years.