Describes what the interface is for?

Question

How would you describe the purpose of the student class interface that understands the basic design of OOP?

Answer 1

quote from http://java.sun.com/docs/books/tutorial/java/concepts/interface.html

Implementing an interface allows a class to become more formal about its promises behavior. Interfaces form a contract between the class and the outside world , and this is the contract during compiler assembly. If your class claims to implement an interface, all methods defined by this interface in the source code before the class are successfully compiled.

Answer 2

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