Abstract classes and interfaces are similar in that you cannot instantiate concrete objects from either one.

Name: Abstract classes and interfaces are similar in that you cannot instantiate concrete objects from either one.
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Both abstract classes and interfaces are used as a blueprints for creating concrete classes or objects, and cannot be instantiated on their own. This is because they contain methods that must be implemented by the concrete classes that inherit from them.

Abstract Classes and Interfaces Are Similar in That You Cannot