Practice Features Of Interfaces (2.2) - Chapter 12: Inheritance, Interface, and Polymorphism

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10 questions

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6 sample questions

Question 1.
Define an interface in your own words.
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Think about what is required to fulfill a contract.
Question 2.
Mention one advantage of using interfaces.
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Consider how classes can share behaviors.
3Question 3.
What is an interface in Java?
- A type of class
- A collection of abstract methods
- A data type
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Remember, interfaces are like contracts.
4Question 4.
True or False: An interface can have method bodies.
- True
- False
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Think about the nature of abstract methods.
Question 5.
Create an interface named 'Vehicle' that has an abstract method 'move()'. Then, create two classes 'Car' and 'Bike' that implement 'Vehicle'.
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Focus on defining both the interface and the implementing classes properly.
Question 6.
Explain how interfaces promote software design principles such as abstraction and polymorphism.
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Consider how this separation of concern affects class design.

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