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Java timer task

srinivasu kondreddy
Greenhorn

Joined: Feb 28, 2010
Posts: 1
Hi All,

I am using java timer task in my project. I am using scheduleAtFixedRate() method. If i am scheduling more tasks , some times newly schedule tasks are not running(control is not comming to run method) untill finishing the earlier tasks. Any body can help me to reslove this problem. please educate me how many tasks i can run simultaniusly . Is ther any chance to find newly schedule task status?

Regards,
Srinu.k.
Henry Wong
author
Sheriff

Joined: Sep 28, 2004
Posts: 19073
    
  40

The java.util.Timer class only has one thread to run the tasks. Hence, it is not possible to run the next task, until the previous one finishes. If you want to schedule into more than one thread, take a look at java.util.concurrent.ScheduledThreadPoolExecutor class.

However, even in this case, i don't think it will schedule the same task to run again, if the previous iteration is not complete.

Henry


Books: Java Threads, 3rd Edition, Jini in a Nutshell, and Java Gems (contributor)
Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 40052
    
  28
And welcome to the Ranch
 
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subject: Java timer task