C# ClassesLesson 32Free preview

C# Abstraction

This lesson is part of C# · All levels

Summary

Abstraction hides complexity and only displays essence through abstract classes and abstract methods. An abstract-marked class cannot be made an object, but can be inherited. The abstract method only has a signature and must be filled by each concrete derivative class.

Key points

Class abstract cannot be instantiated directly with new.
The abstract method only has a declaration without a body, and it must implement a derivative.
An abstract class can still contain a standard method that already contains code.
Abstraction hides the complexity of how it works, while encapsulation hides the details of the data.
The derivative must override all abstract methods, otherwise a compilation error appears.

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