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oop - What is the definition of interface in object oriented . . . An interface promises nothing about an action! The source of the confusion is that in most languages, if you have an interface type that defines a set of methods, the class that implements it "repeats" the same methods (but provides definition), so the interface looks like a skeleton or an outline of the class
Whats the difference between interface and @interface in java? 42 The interface keyword indicates that you are declaring a traditional interface class in Java The @interface keyword is used to declare a new annotation type See docs oracle tutorial on annotations for a description of the syntax See the JLS if you really want to get into the details of what @interface means
What is the difference between an interface and abstract class? An interface is a good example of loose coupling (dynamic polymorphism dynamic binding) An interface implements polymorphism and abstraction It tells what to do but how to do is defined by the implementing class
Implementing two interfaces in a class with same method. Which . . . If both interfaces have a method of exactly the same name and signature, the implementing class can implement both interface methods with a single concrete method However, if the semantic contracts of the two interface method are contradicting, you've pretty much lost; you cannot implement both interfaces in a single class then
How can I define an interface for an array of objects? Yes, your example of defining an interface only for the particular items would be a more useful way to do it It would be quite rare to have an array of items, but not want to conveniently reference a single item Using a real array also exposes length on the interface, which will probably be used quite often
inheritance - What is an interface in Java? - Stack Overflow An interface in java is a special type of Abstract class, the Interface provided the 100% Abstraction but since the java introduce new features in java 8 the meaning of whole Interface is change
oop - How to define interfaces in Dart? - Stack Overflow In Dart there is a concept of implicit interfaces Every class implicitly defines an interface containing all the instance members of the class and of any interfaces it implements If you want to create a class A that supports class B’s API without inheriting B’s implementation, class A should implement the B interface A class implements one or more interfaces by declaring them in an
How to implement a property in an interface - Stack Overflow In the interface, there is no code You just specify that there is a property with a getter and a setter, whatever they will do In the class, you actually implement them The shortest way to do this is using this { get; set; } syntax The compiler will create a field and generate the getter and setter implementation for it