File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
Win a copy of Clojure in Action this week in the Clojure forum!
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

Threads and Sync

 
podonga poron
Ranch Hand
Posts: 55
  • 0
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
A taked this code from K&B book, WHY IT THROWS Total is: 4950


[ June 20, 2008: Message edited by: Campbell Ritchie ]
 
Keith Nagle
Ranch Hand
Posts: 65
  • 0
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Because, for each int i,
your adding it to total.
Total is given its default value for type int
(because its an instance variable remember).
So, i is added to this each time.
What is (0 + 1 + 2 + 3 + 4 + ... + 99)?
=> 4950!
best regards.
K

P.S be careful with your wording.
It doesn't throw total. It prints it!
[ June 20, 2008: Message edited by: Keith Nagle ]
 
Priety Sharma
Ranch Hand
Posts: 156
Android Eclipse IDE
  • 0
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi,

Good use of wait and notify to let the ThreadB execute before ThreadA completes.

But you could have done the same without using wait() and notify() and just replacing b.wait() with b.join().


Also the topic for the question could have been "Loop output" instead of "Threads and Sync".

Just an observation.

Regards,
Priety.
 
I agree. Here's the link: http://aspose.com/file-tools
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic