Difference between Abstract and Interface. Explain any scenario where these concept are used.

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Abstract classes are classes that cannot be instantiated and can have both abstract and non-abstract methods. Interfaces are contracts that define methods that must be implemented by a class.

Abstract classes can have constructors while interfaces cannot
A class can implement multiple interfaces but can only inherit from one abstract class
Abstract classes can have instance variables while interfaces cannot
Interfaces are used to achieve abstraction and provide loose coupling while abstract classes are used to provide a base implementation for subclasses
An example scenario where interfaces are used is in the implementation of the Comparable interface in Java to allow objects to be compared
An example scenario where abstract classes are used is in the implementation of a template method pattern where the base implementation is defined in the abstract class and the subclasses provide the implementation for specific steps

Difference between Abstract and Interface. Explain any scenario where these concept are used.

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