What is IOC In Spring ?

In Spring Framework, IOC stands for "Inversion of Control". It is a design pattern and a fundamental concept that forms the basis of the Spring Framework. IOC is a process in which the control of object creation and lifecycle management is shifted from the application code to the Spring container.

In simple terms, IOC is a way of creating objects and managing dependencies between them by letting Spring manage the creation and injection of dependencies instead of doing it manually in the application code. This means that instead of creating objects directly in our code, we declare the objects and their dependencies as beans in a Spring configuration file or using annotations, and the Spring container creates and manages these objects for us.

IOC is the core feature of the Spring Framework, and it makes the application code more modular, maintainable, and testable. By reducing coupling and promoting loose coupling, IOC makes it easier to modify or replace individual components without affecting the rest of the system.