Classes and objects are separate but related concepts. 
Every object belongs to a class and every class contains 
one or more related objects. A Class is static. The 
attributes of a class don't change. An Object on the other 
hand has a limited lifespan. Objects are created and 
eventually destroyed. Also during that lifetime, the 
attributes of the object may undergo significant change. A 
class is a general concept while objects are the specific 
and real instances that embody that concept

class is templet of an object. object is a instatiate the 
class.Object is super class of all objects.

Class One{   //class

public void getMethod(){

Console.WriteLine("one....");

}

public static void main(String[] args)
{
 One one = new One();  //one is an object of that class. 
console.writeLine();
}