Can a synchronized and un-synchronized methods execute parallely

[Nikita Dutt]

Hi all,


I am confused ; In a multiple threaded environment if a thread acquires a lock on instance ("this") of an object in a method. will an other thread can execute non synchronized methods on the same ("this") object.


Thanks in advance

[Vladimir Ozerov]

Yes, it is possible.

[seenu java]

the "lock" is associated with synchronized methods only,two synchronized methods cant run at a time,but non-synchronized methods can execute simultaneously.

[Rajesh Nagaraju]

the "lock" is associated with synchronized methods only,two synchronized methods cant run at a time,but non-synchronized methods can execute simultaneously.

This need not be true always as it depends on the lock, if the lock is shared by two sycnhornized methods what you say is true.

If not they can run simultaneously.

Please correct me if I am wrong

[Nikita Dutt]

I agree with you rajesh , but i what i was looking ; for the same object can i have a synchronized and un synchronized methods being executed parallel y.

[Rajesh Nagaraju]

Nikita Dutt wrote:I agree with you rajesh , but i what i was looking ; for the same object can i have a synchronized and un synchronized methods being executed parallel y.

THere is no need for a non-synchronized method to acquire a lock, it will be able to run parallely.

[Nikita Dutt]

Thanks to all of you ; really enjoy being a part of java ranch

[seenu java]

Hi Rajesh,
am not sure about the Shared lock and how it works,but two synchronized methods can be executed simultaneously when two different locks gets on two different synchornized methods(seperate locks),
could you please provide any links or information on shared locks.

http://download.oracle.com/javase/tutorial/essential/concurrency/locksync.html checks this might be useful