Practice Why use Interfaces? - 2.3 | Chapter 12: Inheritance, Interface, and Polymorphism | ICSE Class 12 Computer Science
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2.3 - Why use Interfaces?

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is an interface in Java?

💡 Hint: Think of it as a contract.

Question 2

Easy

Can a class implement multiple interfaces?

💡 Hint: Recall the definition of multiple inheritance.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is an interface in Java?

  • A class
  • A collection of abstract methods
  • A concrete implementation

💡 Hint: Consider what ‘abstract’ means.

Question 2

Is it possible for a class to implement more than one interface?

  • True
  • False

💡 Hint: Think about how different functionalities might be integrated.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Imagine you're creating a software application for an online store. Define an interface called 'Purchasable' with a method 'purchase()'. Implement this interface in classes 'Book', 'Electronics', and 'Clothing'. Describe how each class might behave differently when 'purchase()' is called.

💡 Hint: Think about the different purchasing processes for various item types.

Question 2

You are asked to improve the maintainability of an application by introducing interfaces. Current classes have tightly-bound dependencies. Explain how you would use interfaces to achieve this goal.

💡 Hint: Consider how you can decouple components in your system.

Challenge and get performance evaluation