Inversion of Control and Dependency Injection design pattern with real world Example - Spring tutorial

Inversion of Control and Dependency Injection is a core design pattern of Spring framework. IOC and DI design pattern is also a popular design pattern interview question in Java. As the name suggest Inversion of control pattern Inverts responsibility of managing the life cycle of the object e.g. creating an object, setting their dependency etc from application to a framework, which makes writing Java application even more easy. The programmer often confused between IOC and DI, well both words used interchangeably in Java world but Inversion of Control is a more general concept and Dependency Injection is a concrete design pattern. Spring framework provides two implementations of IOC container in the form of Application Context and BeanFactory which manages life-cycle of bean used by Java application. As you may know, necessity is the mother of invention, it benefits to first understand problem solved by IOC and Dependency Injection design pattern. This makes your understanding more clear and concrete.

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