Using interupt to stop the Thread

[Ravi Kiran Va]

I want to stop the Thread after executing certain lines of code .

If I use Thread.interrupt(); , it is not stopping .
But if when i use Thread.stop() , it is stopping but as Thread.stop() is deprecated , please let me know what is the best way to stop the Thread in between .


This is my java code :

public void run()
	{
		
		try
		{
		Thread t = Thread.currentThread();
		
			
			for(int i=0;i<=100;i++)
			{
		
		System.out.println("I Belong to ThrEAD One "+i);
		
		if(i==50)
		{

// t.stop // Working , but deprecated .
		
			t.interrupt();
		}
			}
			
			
		
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}
	

please advice , thanks in advance .

[Wouter Oet]

Assuming that that run method is the only method you're calling in the thread. You can use return. Then the method is done and so is the thread.

[Mike Peters]

replace t.interrupt(); by break;

If you want to use interrupt, you must check the interrupted state of the thread.

[Ravi Kiran Va]

Thanks for your susggestions , i just want to know more about interupt method of Thread , so i am not using break or return .

If you want to use interrupt, you must check the interrupted state of the thread

I did not get you on the above statement .
Could you please tell , what does the above mean .

Actually the question what i want to ask his that what is the best and guaranteed way to stop a Threads execution completely .

[Wouter Oet]

The thread itself is responsible to stop itself. You should not stop a thread in the middle of his execution cycle. That can cause a lot of problems. That's why those thread methods are deprecated. A thread can check it's state by Thread.interrupted() and should then do a proper stop. Some of the thread methods throw interruptedException and then you should do the same.

[Ravi Kiran Va]

Hi , thnaks for the reply ,

you mean to say that we must this way :


Thread t = Thread.currentThread();
Thread.State state = t.getState();

if(state.toString().equals("Interrupted"))
{
// Then what to do here ??
}

please tell me what to do in this piece of block ?? Thanks in advance .

[Wouter Oet]

That totally depends on the situation. You should just stop executing stuff. Something like:

for(Task t: getTasks()) {
   t.execute(); // Heavy task
   if(Thread.interrupted())
      return;
}

[Ravi Kiran Va]

Thanks Wouter , this was what i wanted actually . Thnaks once again .