Concepts_Learned

Question 1

Interface

Answer 1

https://en.wikipedia.org/wiki/Interface_(Java)

Question 2

Interface in Class

Answer 2

The syntax for implementing an interface uses this formula:

… implements InterfaceName[, another interface, another, …] …

Question 3

What happens if a class implements an interface and does not implement all its methods?

Answer 3

It must be marked as abstract.

Question 4

How does Interfaces affect Callbacks in Java?

Answer 4

Java has no Callbacks