In java programming language the keyword interface in java is used to declare and define an interface. Keywords are basically reserved words which have specific meaning relevant to a compiler. The keyword implement is used to implement an interface by a class. Interfaces in java are abstract means they can not be instantiated directly. Interfaces should be implemented by any class in order to instantiate them.
Syntex: Here is the syntax that displays how to declare and define an interface.
Note: Here are some points that must consider about an interface.
java.lang.Object, is the exceptional case because it is the root class of the Java type system).
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