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VOOZH | about |
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VOOZH | about |
In Java, classes and objects are core concepts of Object-Oriented Programming (OOP). Understanding the difference between them is essential for writing structured and reusable code.
For Example, Dog is a class, Tommy is an object of that class.
A Class is a blueprint or template used to create objects. It defines data members (fields) and member functions (methods) that describe the behavior of an object. When a class is defined, no memory is allocated.
Example: An account is a class that defines common properties, such as name, I, and balance.
An Object is an instance of a class. It represents a real-world entity and allows access to the class members. Memory is allocated only when an object is instantiated.
Example: SBI and ICICI are objects created from the Account class.
Example:
Account [name=Raghab, id=2211, balance=70000.0] Raghab Current Balance Is :: 70000.0 Raghab Withdraw Money Successfully -------------------------------- Account [name=Navi, id=1001, balance=90000.0] N...
Explanation: This program demonstrates how a class defines the structure and behavior of an account, while objects represent real accounts created at runtime. The Account class encapsulates account details and operations, and the main method creates account objects to check balance and perform withdrawal actions.
👁 class_account| Basis | Class | Object |
|---|---|---|
| Definition | A blueprint or template used to create objects | A real instance of a class |
| Creation | Created using the class keyword | Created using the new keyword |
| Memory Allocation | Does not occupy memory | Occupies memory |
| Existence | Logical entity | Physical (runtime) entity |
| Data Storage | Does not store actual values | Stores actual data |
| Purpose | Defines structure and behavior | Performs operations using class members |
| Example | class Account { } | Account acc = new Account(); |
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