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Who is getting locked?

 
Adolfo Eloy
Ranch Hand
Posts: 146
Eclipse IDE Java Linux
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Hi all.

I have a conceptual doubt about threads. If I have an object that has the method that follows:



I'd like to confirm that the object whose method is synchronized is the object that has been locked.
So the instance variables such as acct who is a reference to an object isn't locked.

Am I right?

Thanks
 
Jeff Verdegan
Bartender
Posts: 6109
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Android IntelliJ IDE Java
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We don't really refer to anything as "being locked." Rather, we say that we obtain a lock. But if by "locking X" you mean "obtaining X's lock", then, yes, you're correct. The object whose lock we obtain is the one whose synchronized method we are executing.



The above methods are equivalent. Both obtain the lock for the "this" object and hold it for the entire body of the method.
 
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