INTERVIEW QUESTIONS J2EE JAVA DETAILS

Question: Can a lock be acquired on a class?

Answer: Yes, a lock can be acquired on a class. This lock is acquired on the class's Class object.

Yes, a lock can be acquired on a class. This lock is acquired on the class's Class object. Source: CoolInterview.com

The synchronized keyword tells the JVM that the method requires a lock in order to run. The JVM then creates the lock and manages the allocation of the lock to threads during execution. When a thread has the lock for a class, it is the only thread that can execute any of the class methods that require a lock. Source: CoolInterview.com

You get a lock for the class by declaring the method to be synchronized, but the method also has to be a static method. a static method that is synchronized ensures a class level lock. whereas synchronizing a non-static method gives a lock on the object of that class Source: CoolInterview.com

yes indirectly because we can aquire a lock on the object of
the class.And for the class level lock we make use of static
synchromnized block.
Source: CoolInterview.com

we can acquire a lock on the class by using synchronization statement Source: CoolInterview.com

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