Java Interface Test – 2

1. What does an interface contain?

2. All methods must be implemented of an interface.

3. Which of the following access specifiers can be used for an interface?

4. Which of the following is the correct way of implementing an interface A by class B?

5. What type of variable can be defined in an interface?

6. What will happen if we provide concrete implementation of method in interface?

7. What happens when a constructor is defined for an interface?

8. Can “abstract” keyword be used with constructor, Initialization Block, Instance Initialization and Static Initialization Block.

9. What type of methods an interface contain by default?

10. What happens when we access the same variable defined in two interfaces implemented by the same class?