Answer Posted / manoshp
Abstract class:- When there are common behaviors for a set of classes and that behavior do not have any existence by its own, these behaviors are defined in an abstract super class. All sub classes will inherit that common behavior by extending the super class.
Interface:- When there are multiple implementations for a set of functionalities, all these behaviors are defined in an interface as entry points without any implementation details to these behaviors. The client class can use this interface without considering the implementation details.
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