Method Overriding - Day 6

Question 1

Dynamic polymorphism

Answer 1

Like static polymorphism. Polymorphism can also occur at runtime, this is dynamic polymorphism.

Accomplished by overriding the parent method in the child class.

Question 2

When overriding

Answer 2

The child class should have the same signature as the parent class.

Method should not have a weaker access modifier

Private methods are not overridden

Question 3

Dynamic binding

Answer 3

Datatype = new ();

Version of the method that will be called is determined by the objects this is taken at runtime.

Question 4

Annotations

Answer 4

Meta-data that provides data about the program and is not part of the program itself

“@override”

Gives additional information to compiler

Question 5

Super keyword

Answer 5

Invokes a parent class method from a child class method

Access a parent class instance variable in the child class there is a variable in the child class with the same name

Question 6

Overloading vs overriding

Answer 6

Overloading is compile-time polymorphism

Overriding is runtime polymorphism