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They provide the same level of abstraction and encapsulation, and similar inheritance.
The differences in inheritance: an abstract class forces you to have at least 1 subclass (otherwise this abstraction branch is useless, because you won't be able to create any instance), while a non-abstract class may have optional subclasses.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoBoth interfaces and classes have methods. However, only classes store data, have constructors, and have useable code.
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What is similarities between Abstract Class and Interface?
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An abstract class cannot have a constructor and hence you cannot invoke the constructor of the class - i.e., you can instantiate an abstract class and hence you cannot call the constructor of an abstract class.
