Abstract Classes Flashcards
1
Q
True or False
An abstract method can be defined inside a concrete class without implications
A
False. If an abstract method is defined inside a concrete class, the class must be declared abstract
2
Q
Can abstract classes define concrete constructors?
A
Yes. However, abstract constructors are illegal
3
Q
Can abstract classes be instantiated?
A
No. However, they can define concrete constructors
4
Q
Can abstract classes declare instance variables?
A
Yes
5
Q
Can abstract classes define concrete methods?
A
Yes
6
Q
Can an abstract class define its own abstract contructor?
A
No. Abstract constructors are illegal
