Question 7

Which of the following statements are true about synchronization?  (Select two choices)

Options :

A. Static methods cannot be synchronized.

B. Synchronized methods methods cannot make calls to non-synchronized methods

C. A synchronized method can be overridden by a non-synchronized and vice-versa

D. When a Thread is executing a synchronized method of a an object, other threads can freely access non-synchronized methods of the same object.

Answer : C & D.

Static methods can be synchronized. Static synchronized methods acquire lock on the object class and not on the instance. so Option A is incorrect.

Synchronized methods can make calls to non-synchronized methods. [ This is slightly out of context but : Only static methods can not make calls to non-static methods ] so option B is incorrect.