File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Programmer Certification (SCJP/OCPJP) and the fly likes threads Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Certification » Programmer Certification (SCJP/OCPJP)
Bookmark "threads" Watch "threads" New topic


srilatha rao

Joined: Jun 01, 2006
Posts: 21
If a parent thread invokes join method on a child thread, then parent thread will go into the blocked-for-join-completion state.
If that child thread sleeps for some time in that execution, Will the parent thread start running before the completion of child thread.

please explain...

Thanks in advance
Javier Sanchez Cerrillo
Ranch Hand

Joined: Aug 02, 2006
Posts: 152
NO. Since the parent Thread is sleeping it cannot wake up just until child Thread has finished his work or it has been interrupted.

SCJP 5.0 95%<br /> <br />The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
I agree. Here's the link:
subject: threads
Similar Threads
Join method
How can I determine when my Threads are complete?
How to block child thread until parent thread terminates
Parent Thread stops then does child thread also stop?