| It is a blueprint from which different instances (objects) are created. | Objects are the instances of the class. |
| Class is a LOGICAL entity. | Objects are physical entities. |
| Users can DECLARE class only once. | Objects can be declared MULTIPLE times depending upon the requirements. |
| When a class is created there is no memory allocation | Objects allocated memory. |
| Class is a group of objects. | Objects are real-world entities such as PEN, copy, mouse, etc. |
| Class can be declared using class keyword e.g class STUDENT {} | Objects can be declared using the new keyword e.g. Student s1=new Student(); |