What is the difference between an interface and an abstract class?

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Java Aravind 4 months 2025-02-22T04:57:12+00:00 2025-02-22T04:57:12+00:00 1 Answer 10 views

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Akshathadabbara · Answer 1 · 2025-02-22T05:00:36+00:00

Abstract Class: Can have both abstract (without implementation) and concrete (with implementation) methods. Can have instance variables.
Interface: All methods are implicitly abstract (before Java 8). Supports multiple inheritance.
Example:

abstract class Animal { abstract void makeSound(); // Abstract method

void sleep()

{

System.out.println("Sleeping"); } // Concrete method

}

interface Bird

{

void fly(); // Implicitly abstract

}