difference between abstract and interface

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Accepted Answer

Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.

Abstract class can have constructors, fields, and methods, while interface cannot have any implementation.
A class can implement multiple interfaces but can only inherit from one abstract class.
Abstract classes are used to define common characteristics of subclasses, while interfaces are used to define a contract for classes to implement.
Example: Abstract class - Animal with abstract method 'eat', Interface - Flyable with method 'fly'.