Close
Inheritance
Why inheritance?
Why can a class extend multiple classes?
An abstract class can define only ... methods and ....
A class can inherit ... or ... class
A class uses the keyword ... to inherit a class
a class can inherit ... interfaces
A class uses the keyword ... to implement an interface
Can an interface implement a class?
An interface uses the keyword ... to inherit interfaces
Can an abstract class inherit a concrete class and vice versa?
Can an abstract class extend interfaces?
Can an abstract extend another abstract class?
The variables of an interface are implicitly..
What should the first concrete class that is derived from a abstract class has to do ?
Is it possible to create an object of type interface ?
what is casting
the keywords this en super are implicit...
the 'this' reference always points to an object's own reference
