What is the Difference between Abstract and Interface? What is Sealed Class? Explain About non-generic class. What is managing and unmanaging?

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Accepted Answer

Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods. Sealed classes cannot be inherited. Non-generic classes do not have type parameters.

Abstract classes can have method implementations, while interfaces cannot.
Interfaces can be implemented by multiple classes, but a class can only inherit from one abstract class.
Sealed classes cannot be inherited by other classes.
Non-generic classes do not have type parameters, unlike generic classes.
Managing refers to memory management done by the .NET runtime, while unmanaged refers to memory management done by the developer.

What is the Difference between Abstract and Interface? What is Sealed Class? Explain About non-generic class. What is managing and unmanaging?

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