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1 Abstract classes can have methods with implementation whereas interface provides absolute abstraction and canât have any method implementations. 2  Abstract classes can have constructors but interfaces canât have constructors. 3  Abstract class have all the features of a normal java class except that we canât instantiate it.
In this lab, you are going to learn how to use abstract classes and how dynamic binding is applied. You are given an abstract class called AcademicPerson, which has one abstract method that needs to be implemented in any class that extends AcademicPerson class. If a class that extends AcademicPerson does not implement the abstract method, then the derived class will have to be abstract itself.