help needed plz

[Johnson David]

Hi friends ,

How many ways are there to stop a thread ?

what are they ?

thanx in advance

regards

johnson

[Harald Kirsch]

My first click went here: http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Thread.html

This immediately leads tohttp://java.sun.com/j2se/1.4.2/docs/guide/misc/threadPrimitiveDeprecation.html

[Ken Blair]

Originally posted by johnson david:
Hi friends ,

How many ways are there to stop a thread ?

what are they ?

thanx in advance

regards

johnson

That depends on the question. How many ways are there to stop any Thread? None that you should use. How many ways are there to code a Thread such that it can be killed? It's only limited by your imagination. The most common way is by having a loop in the run() method that checks a condition. Once the condition is no longer met the loop will break and the method will exit so that the Thread will die.

A Thread is an Object. It's a special kind of Object though as it starts a new thread of execution. This is the basis for multithreading and allows you to make use of multiple processors or to continue processing instructions even while waiting on a resource.

[Stan James]

If the thread is looping while some condition is true you can make the condition false via a setter for example. (What Ken said)

If the thread is blocking on a wait(), you can interrupt() it.

If the thread is blocking on some other operation, like a db connect or a stream read, you may or may not be able to break that other operation. This is often a tough situation with no easy solution.

More?

[Ken Blair]

But interrupt doesn't stop a thread does it?

[Henry Wong]

Originally posted by Ken Blair:
But interrupt doesn't stop a thread does it?

No it doesn't -- but I think Stan was just elaborating the "setting the exit condition" example. Interrupting it will causes it to break out of wait() and hence, can check whether it should exit.

Henry