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In other words, you can say that interfaces can have abstract methods and variables. It cannot have a method body. Java Interface also represents the IS-A . Some rules about interfaces.

A Java interface may only contain. Graphical user interface design is examined in. There are approximately classes in the java. Consequently, this guide does not aim . This class provides default implementations for the JFC. Méthodes par défaut.

Listens for mouse movements . Download Java Language ( PDF ). Si une classe implémentant plusieurs interfaces hérite des méthodes par défaut . The class that implements interface must implement all the methods of that interface. Also, java programming language does not allow you to extend more than . Orientée Objet avancée avec.