A class is often defined as the blueprint or template for an object. We can create multiple objects from a class.
An object is an identifiable entity with some characteristics, state and behaviour.
Memory is allocated when we create the objects of a class type. A class contains properties and methods to define the state and behaviour of its object. It defines the data and the methods that act upon that data.
Example :
A dog has states - color, name, breed as well as behaviors – wagging the tail, barking, eating. An object is an instance of a class.
Syntax Of Class :
class class_name
{
Variables ;
Methods ;
}
Syntax Of Object :
Class_Name ReferenceVariable ( or ) Object = new Class_Name ( ) ;
//Class & Object in Java class Rectangle { int length, width; void getDetails(int x, int y) { length = x; width = y; } int area() { int a = length * width; return a; } } public class class_object { public static void main(String args[]) { Rectangle o1 =new Rectangle(); o1.length=10; o1.width=20; System.out.println("Area of Rectangle : "+o1.area()); Rectangle o2=new Rectangle(); o2.getDetails(20,30); System.out.println("Area of Rectangle : "+o2.area()); } }
Area of Rectangle : 200 Area of Rectangle : 600To download raw file Click Here
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