What is an object in Java

Object is an instance of a class while class is a blueprint of an object. An object represents the class and consists of properties and behavior.

Properties refer to the fields declared with in class and behavior represents to the methods available in the class.

In real world, we can understand object as a cell phone that has its properties like: name, cost, color etc and behavior like calling, chatting etc.

So we can say that object is a real world entity. Some real world objects are: ball, fan, car etc.

•      Object reference

          – an identifier of the object

•   Instantiating an object

          – creating an object of a class; assigns initial values to the object data

          – Objects need to be instantiated before being used

•  Instance of the class

          –  an object after instantiation

There is a syntax to create an object in the Java.

Java Object Syntax

className variable_name = new className();

Here, className is the name of class that can be anything like: Student that we declared in the above example.

variable_name is name of reference variable that is used to hold the reference of created object.

The new is a keyword which is used to allocate memory for the object.