How to properly stop the Thread in Java?

Question

I need a solution to properly stop the thread in Java.

I have IndexProcessorclass which implements the Runnable interface:

public class          


        

Answer 1

Sometime I will try 1000 times in my onDestroy()/contextDestroyed()

      @Override
    protected void onDestroy() {
        boolean retry = true;
        int counter = 0;
        while(retry && counter<1000)
        {
            counter++;
            try{thread.setRunnung(false);
                thread.join();
                retry = false;
                thread = null; //garbage can coll
            }catch(InterruptedException e){e.printStackTrace();}
        }

    }