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.
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.
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.
OP asked for interface, I assume it is extended with other properties and methods, you cannot do that with a type and also type is more limited than an interfaces in terms of general usability
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.
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.
Is there a way to change the type of interface property defined in a *.d.ts in typescript? for example: An interface in x.d.ts is defined as interface A { property: number; } I want to change...
A good way to think of this is in terms of inheriting an interface vs. inheriting an implementation. In C++ you can either inherit both interface and implementation together (public inheritance) or you can inherit only the implementation (private inheritance). In Java you have the option of inheriting just the interface, without an implementation.
