What is an interface class give one example of it?

What is an interface class give one example of it?

Interfaces in Object Oriented Programming Languages. An interface is a programming structure/syntax that allows the computer to enforce certain properties on an object (class). For example, say we have a car class and a scooter class and a truck class.

What is the difference between classes and interface?

A class describes the attributes and behaviors of an object. An interface contains behaviors that a class implements. A class may contain abstract methods, concrete methods. An interface contains only abstract methods.

What do you mean by interface in Java?

An interface in the Java programming language is an abstract type that is used to specify a behavior that classes must implement. A class that implements an interface must implement all of the non-default methods described in the interface, or be an abstract class.

What is interface class in C#?

Interface in C# is a blueprint of a class. It is like abstract class because all the methods which are declared inside the interface are abstract methods. It cannot have method body and cannot be instantiated. It is used to achieve multiple inheritance which can’t be achieved by class.

How is an interface used in a class?

An interface is a completely ” abstract class ” that is used to group related methods with empty bodies: To access the interface methods, the interface must be “implemented” (kinda like inherited) by another class with the implements keyword (instead of extends ). The body of the interface method is provided by the “implement” class:

How to access the interface methods in Java?

To access the interface methods, the interface must be “implemented” (kinda like inherited) by another class with the implements keyword (instead of extends). The body of the interface method is provided by the “implement” class:

How are C + + interfaces implemented in abstract classes?

The C++ interfaces are implemented using abstract classes and these abstract classes should not be confused with data abstraction which is a concept of keeping implementation details separate from associated data. A class is made abstract by declaring at least one of its functions as pure virtual function.

How are interface fields public and abstract in Java?

In other words, Interface fields are public, static and final by default, and the methods are public and abstract. As shown in the figure given below, a class extends another class, an interface extends another interface, but a class implements an interface.