join() always needs a try-catch block?

[Joe Lemmer]

Hi there,

In K&B 6, ch 9, p.726 re: The join() method, we have example code:

Thread t = new Thread();
t.start();
t.join();    

Am I right in saying though that the Thread class's join() method always needs a try-catch block round it, because it can throw an InterruptedException? What I mean to say is I've checked in the API and it does, but I'm just wondering if I'm not getting something and there could be circumstances when you don't need a try-catch block.

Thanks

Joe

[Abimaran Kugathasan]

Joe Lemmer wrote:Hi there,

In K&B 6, ch 9, p.726 re: The join() method, we have example code:

Thread t = new Thread();
t.start();
t.join();    

Am I right in saying though that the Thread class's join() method always needs a try-catch block round it, because it can throw an InterruptedException?

Yes!

Joe Lemmer wrote:
What I mean to say is I've checked in the API and it does, but I'm just wondering if I'm not getting something and there could be circumstances when you don't need a try-catch block.

Thanks

Joe

There are chances to be interrupted the Thread, which in the blocked state. That's why, the join() method should be wrapped around try/catch block!

[Joe Lemmer]

Thanks Abimaran.

I understand that there is a possibility of the Thread in the blocked state being interrupted. Thats good. I was just wondering why there was no try-catch block round the join() method in K&B. They don't make many mistakes and it was making me a bit nervous!

I am reassured now, though.

Cheers

[Sahil Kapoor]

Because there focus at that time is to give you an idea about join method.
Moreover you can assume that , the method containing that part is ducking the Exception by mentioning throws InterruptedException

Cheers!!!

[Abimaran Kugathasan]

Joe Lemmer wrote:Thanks Abimaran.

I understand that there is a possibility of the Thread in the blocked state being interrupted. Thats good. I was just wondering why there was no try-catch block round the join() method in K&B. They don't make many mistakes and it was making me a bit nervous!

I am reassured now, though.

Cheers

Check the Errata! They may include it! Or else, check the API!

[Ankit Garg]

Joe Lemmer wrote:I was just wondering why there was no try-catch block round the join() method in K&B.

The code is not complete, so you cannot surely say that there is not try-catch block around it. You can say that its not shown in the code...