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What do you understand by Object and Class?
Asked by Afsal Last Modified
Class is a definition, and object is an implementation/instance of it.
Consider an example of a class Vehicle. The properties of vehicles are:
The number of wheels, Avg. Speed, number of seats, fuel type, etc.
It can be instansiated by providing a values to the properties. like
Car = [number of wheels = 4, Avg. Speed=100km/hr, number of seats=5, fuel type=petrol] etc.
Aeroplane = [number of wheels = 3, Avg. Speed=700km/hr, number of seats=150, fuel type=petrol]
Bicycle = [number of wheels = 2, Avg. Speed=30km/hr, number of seats=1, fuel type=none]
Here Vehicle is a class only with the properties' definition of the properties have no absolute values. Whereas Car, Bicycle, Aeroplane are objects of type Vehicle class.
Object: Object is the instance of the classes. The object is a bundle of software containing related
variables and methods. It contains data and code to operate on those data (functions). Objects are the basic run-time entities of the programming, based on object-orientation. These are the central entities behind the object-oriented programming approach. It may be a person, place, or any data item. It may be any item that the program has to handle.
Classes: A class describes a group of objects with similar properties, common behavior, and common relationships to other objects. It is a collection of objects of similar types. It is a user-defined data type that can be used, just like any other basic data type, to declare variables. The class variables are known as objects or instances of a class, which are the central idea of the object-oriented programming approach.
Object and any thing exist in the world that is either living or non-living. For e.g. a pen, a book etc. An object is an instance of a class. A class is a group of similar objects. for example Animal is a class and cat, dog, cow etc are the objects of the Animal class.
hello class is basically blue print for creating a objects. class is logical entity. object is physical entity. object is instance of a class.For Example BooCollections is a class. java book is a instance.
read lessVinaykumar Devarkond
Java Full Stack Trainer with 6 years of experience in Java, SpringBoot, Angular
Class is a model or blueprint from which the object is created. The object is an instance of a class.
Class is logical, so memory is not allocated to it when it is created, whereas an object is physical, so memory is allocated to it.
Class is created only once, whereas an object from a class is created many times whenever we require it.
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