Creating a concrete class

Question 1

Define a concrete class !

Answer 1

A concrete class is any non-abstract class

A concrete class is the first non abstract class that extends an abstract class and is required to implement all its abstract methods

Question 2

What do you have to check when a concrete class extends an abstract class ?

Answer 2

You have to make sure that all abstract methods are overridden in the concrete class that extends the abstract class

Question 3

Give a characteristic of an abstract class that inherits another abstract class !

Answer 3

An abstract class that extends another abstract class is not required to override any methods declared in the super class that is abstract

Question 4

How does that impact a concrete class ?

Answer 4

A concrete class that extends an abstract class must provide an implementation for all the inherited abstract methods