What is an interface in Java?

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interface in Java is a blueprint of a class. It has static constants and abstract methods. The interface in Java is a mechanism to achieve abstraction.
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It is a collection of abstract methods. A class implements an interface
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Interface is a collection of abstract methods. abstract means that incomplete, therefore abstract method is a method with only signature, without body. Whatever the methods declared in the interface get implented by their implenting class. It is the prime duty of implenting class to give body to the...
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Interface is a collection of abstract methods. abstract means that incomplete, therefore abstract method is a method with only signature, without body. Whatever the methods declared in the interface get implented by their implenting class. It is the prime duty of implenting class to give body to the abstract method of interface. Implementing class may have their own extra methods as well. read less
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