Answer
Interfaces define a contract that implementing types must follow. They enable polymorphism, abstraction, dependency injection, and loose coupling.
They also make unit testing easier by allowing mock implementations.
Quick Answer
Interfaces define a contract that all implementing types must follow. They enable polymorphism, dependency injection, and loose coupling. A class can implement many interfaces but inherit only one class. They also make unit testing easier by allowing mock implementations to replace real ones.
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SugharaIQ Editorial Team
Verified Answer
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Source: SugharaIQ