Spring Tutorial - 2 - Dependency Injection & Inversion of Control without Spring

In this episode of the Spring series, I explain to you the concept of Dependency Injection and Inversion of Control and then show you how to do it in a Java Project. #SpringFramework #SpringTutorial #Java

Code: https://gitlab.com/kody-simpson/spring-framework/dependency-injection-and-inversion-of-control-without-spring
Resources:
- https://www.manning.com/books/dependency-injection?query=dependen
- https://www.javacodegeeks.com/2010/12/dependency-injection-manual-way.htm #:~:text=%20Dependency%20Injection%20is%20a%20concept%20first%20and,Java%20application%2C%20we%20repeatedly%20encounter%20with%20two%20events%3A
- https://martinfowler.com/articles/injection.html

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0:00:00 - Intro
0:00:47 - What is a dependency?
0:02:45 - What is Dependency Injection?
0:05:16 - What is Inversion of Control?
0:06:45 - Manual Dependency Injection (without Spring framework)
0:09:51 - Tight coupling
0:11:18 - Loose coupling
0:14:21 - Example 1 (Constructor Injection)
0:17:38 - Example 2 (Using interface to support "swappability")
0:23:48 - Outro

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