What is the difference between interface and class

Angular 7. Machine Learning. Data Structures. Operating System. Computer Network. Compiler Design. Computer Organization. Discrete Mathematics. Ethical Hacking. Computer Graphics. Software Engineering. Web Technology. Cyber Security. C Programming. Such as various cars that were built from the same set of blueprints and therefore contains the same components.

In object-oriented terms, we say that our car is an instance of the class of objects known as cars. It is a template for objects you will create or we can say it's a specification that we define and every object we define will follow that pattern. A class is the blueprint from which individual objects are created. The following example shows the implementation of "Car". In this class, we define a rectangle class consisting of width, height and depth and in another class RectangleDemo we define its value.

Interface Interfaces are the interaction of objects with the outside world through the methods that they expose. Methods form the object's interface with the outside world; the buttons on the front of your television set. In simple words, an interface is a collection of abstract methods.

A class implements many interfaces at a time. An interface is not a class. Writing an interface is similar to writing a class, but they are two various concepts. A class describes the attributes and behaviours of an object. An interface contains behaviours that a class implements.

How to declare an interface in Java The interface keyword is used to declare an interface. A class uses the "implements" keyword to implement an interface. A Class has both definition and an implementation whereas Interface only has a definition. A Class can be instantiated but an Interface cannot be instantiated You can create an instance of an Object that implements the Interface.

A Class is a full body entity with members, methods along with there definition and implementation. An Interface is just a set of definition that you must implement in your Class inheriting that Interface.

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