Win a copy of The Journey To Enterprise Agility this week in the Agile and Other Processes forum! And see the welcome thread for 20% off.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Jeanne Boyarsky
  • Liutauras Vilda
  • Campbell Ritchie
  • Tim Cooke
  • Bear Bibeault
Sheriffs:
  • Paul Clapham
  • Junilu Lacar
  • Knute Snortum
Saloon Keepers:
  • Ron McLeod
  • Ganesh Patekar
  • Tim Moores
  • Pete Letkeman
  • Stephan van Hulst
Bartenders:
  • Carey Brown
  • Tim Holloway
  • Joe Ess

Problem in understanding join()  RSS feed

 
Ranch Hand
Posts: 69
Linux MySQL Database
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi,
I am preparing for SCJP 6.0. I am having a problem in understanding join() method.
Can any body provide a small program demonstrating use of join().
 
author
Sheriff
Posts: 23566
138
C++ Chrome Eclipse IDE Firefox Browser Java jQuery Linux VI Editor Windows
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

Arpit Gadle wrote:Hi,
I am preparing for SCJP 6.0. I am having a problem in understanding join() method.
Can any body provide a small program demonstrating use of join().



The join() method is used to wait for another thread to finish. So, when you call the join() method on a thread object, the method will not return, until the thread represented by the thread object has finished.

I am not sure what "problem in understanding" that you may be having. Or how could an example program can really help more than what I just described. Perhaps you can elaborate the issue that you are having.

Henry
 
Arpit Gadle
Ranch Hand
Posts: 69
Linux MySQL Database
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I am clear with the definition. But was having problem in writing small example which demonstrates how join() actually works. After posting this topic, I tried for a while and wrote a program which actually shows how join() works


What this code does is, it joins the current thread (main) to thread t2. So the current thread will not become runnable until t2 has finihsed.

Where should I place call to join() so that thread t2 can join thread t3.
 
Sheriff
Posts: 23640
48
Eclipse IDE Firefox Browser MySQL Database
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
You want the thread which runs the Job_2 class to wait at some point during that running for t3 to terminate before continuing? Then you would call t3.join() in the Job_2 class.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!