java constants class or interface
An interface is a reference type in Java. By using the interface we can achieve abstraction in java.
We cannot define the method body in the interface.
. A class implements an interface thereby inheriting the abstract methods of the interface. It is a collection of abstract methods. Method bodies exist only.
An interface can have abstract methods and static constants. The interface in Java can be defined as the blueprint of the class. Along with abstract methods an interface may also contain constants default methods static methods and nested types.
We can also achieve multiple inheritance in java using interface. It is similar to a class.
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