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run() method in thread

Bijesh Krishnadas
Ranch Hand

Joined: Aug 08, 2002
Posts: 31
somebody plzzz answer this....
Does the Thread class define the run() method? i.e. the run() method is not abstract in Thread class.
Anthony Villanueva
Ranch Hand

Joined: Mar 22, 2002
Posts: 1055
The Thread class's run() method does nothing. According to the docs:

If this thread was constructed using a separate Runnable run object, then that Runnable object's run method is called; otherwise, this method does nothing and returns.
David O'Meara
Rancher

Joined: Mar 06, 2001
Posts: 13459

But that's not 'nothing'.
If you pass the Thread a Runnable object it will start it up ie

as per the second example in the javadocs, otherwise it will do nothing and end.
It does sit there nicely for you to override when you extend the Thread class though...
Peter Kristensson
Ranch Hand

Joined: Jul 02, 2001
Posts: 118
note the difference between the run() and start() method.
the run() method locks the current thread, but the start() method returns directly after firing the new thread.
Dirk Schreckmann
Sheriff

Joined: Dec 10, 2001
Posts: 7023
Bijesh K,
Welcome to JavaRanch!
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Bijesh Krishnadas
Ranch Hand

Joined: Aug 08, 2002
Posts: 31
thanx 4 the help ppl!
 
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