Explain about interfaces

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Interfaces in programming define a contract for classes to implement certain methods or properties.

Interfaces in programming are like blueprints that define the structure of a class.
Classes that implement an interface must provide definitions for all the methods and properties specified in the interface.
Interfaces allow for polymorphism, where different classes can be treated as instances of the same interface.
Interfaces are used to achieve abstraction and decoupling in object-oriented programming.
Example: An interface 'Shape' may have methods like 'calculateArea' and 'draw'. Classes like 'Circle' and 'Rectangle' can implement this interface.