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.

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.html#:~:text= Dependency Injection is a concept first and,Java application%2C we repeatedly encounter with two events%3A
• https://martinfowler.com/articles/injection.html

• 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

#spring-boot #java #programming