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objects and threads

sylvia greene
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Joined: Jun 23, 2004
Posts: 40

A thread can't invoke a wait or notify method on an object unless it owns that objects lock


I can't the concept of object here.




What is a thread and what is a object here?



Isn't "b" both an object and thread? what's object being referred to here.
Barry Gaunt
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Joined: Aug 03, 2002
Posts: 7729
Yes, in this case, b is an object and a Thread (Thread is derived from object). The wait() and notify() are being called on the shared object b The b in the main method refers to the same object as this in the run method of object b.


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It is sorta covered in the JavaRanch Style Guide.
 
subject: objects and threads
 
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