C++ requires that you re-declare static data members outside the class. This is not required in Java.

Keep practicing — related questions

• In Static inner classes, the data members and the member functions are by default static.
• Which of the following statements is WRONG regarding static data member?
• Static members can be called without having an instance.
• Which of them is false about a Static data member within a class
• The static member functions have a class scope and they have access to the 'this' pointer of the class.
• Can the private data members of a class be modified or accessed outside the class, without using member fun...
• Static global variable in one c++ file can be used in another c++ file with the help of extern keyword.
• It is not possible to have an instance of a non-static inner class before any instances of the outer class ...