[Solved] What is the main purpose of an interface in Java? — Ans: To declare methods that a class must implement without providing their body | Java

Java - Interfaces

What is the main purpose of an interface in Java?

ATo inherit code from multiple classes

BTo store data values like variables

CTo create objects directly

DTo declare methods that a class must implement without providing their body

Step-by-Step Solution

Solution:

Step 1: Understand what an interface declares
An interface only declares method signatures without any implementation.
Step 2: Compare with other options
Interfaces do not store data, create objects, or inherit code from classes.
Final Answer:
To declare methods that a class must implement without providing their body -> Option D
Quick Check:
Interface purpose = declare methods only [OK]

Quick Trick: Interfaces declare methods without bodies [OK]

Common Mistakes:

Master "Interfaces" in Java

9 interactive learning modes - each teaches the same concept differently

More Java Quizzes

What is the main purpose of an interface in Java?