Practice What is an Interface? - 2.1 | Chapter 12: Inheritance, Interface, and Polymorphism | ICSE Class 12 Computer Science
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Academics

Grades

Grade 8 Grade 9 Grade 10 Grade 11 Grade 12

Curriculum

CBSE ICSE IB
Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Professional Courses
Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.

games
Typing
Memory
Math
English Adventures
Knowledge

2.1 - What is an Interface?

Enroll to start learning

You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take mock test.

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define an interface in Java.

💡 Hint: Start with the keyword 'interface'.

Question 2

Easy

What type of methods does an interface contain?

💡 Hint: Recall that these methods are just signatures without bodies.

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 does an interface in Java allow a class to do?

  • A. Inherit properties from multiple classes
  • B. Define a set of methods for a class to implement
  • C. Create new data types

💡 Hint: Focus on the contract aspect of interfaces.

Question 2

True or False: A class can implement multiple interfaces in Java.

  • True
  • False

💡 Hint: Think about how different functionalities can be mixed.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Create a Java program with an interface called 'Playable' that includes a method 'play()'. Then implement this interface in two classes: 'Guitar' and 'Piano'. Show how each class implements the method differently.

💡 Hint: Focus on creating the interface and think about two musical instruments you can use.

Question 2

Discuss how using interfaces can lead to better software design. Provide at least two examples of their advantages in real-world applications.

💡 Hint: Reflect on the principles of software engineering and how they apply to interface usage.

Challenge and get performance evaluation