What is difference between interface and abstract class

Question

Accepted Answer

An interface is a contract that defines the methods that a class must implement, while an abstract class can provide some implementation.

An interface can only have abstract methods, while an abstract class can have both abstract and non-abstract methods.
A class can implement multiple interfaces, but can only inherit from a single abstract class.
Interfaces are used to achieve multiple inheritance in Java.
Abstract classes can have instance variables, constructors, and static methods, while interfaces cannot.
An abstract class can provide a default implementation for some methods, while an interface cannot.

Accepted Answer

Abstract class and interface both are used to achieve abstraction where we can declare the abstract methods. Abstract class and interface both can't be instantiated.

What is difference between interface and abstract class

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