Originally posted by Anne Sullivan: I have a questions regarding the SCJP exam:
1. Can a static method be synchronized? If so, what is being locked since there is no this reference?
From Kathy Sierra's and Bert Bate's SCJP book,
Static methods can be synchronized. There is only one copy of the static data you�re trying to protect, so you only need one lock per class to synchronize static methods�a lock for the whole class. There is such a lock; every class loaded in Java has a corresponding instance of java.lang.Class representing that class. It�s that java.lang.Class instance whose lock is used to protect the static methods of the class (if they�re synchronized).