Why dependency injection is needed?

Related questions

1. What is .NET IoC?
2. What is the definition of IoC?
3. What is IoC container in MVC?
4. What is difference between BeanFactory and ApplicationContext?
5. Is IOC and DI same?
6. What is IoC order in NSE?
7. How does the IOC work?
8. What is Unity IoC container?
9. What is the difference between DI and IoC?
10. What is the difference between dependency injection and inversion of control?

Tags

1. #without
2. #creation
3. #usage
4. #dependencies
5. #object
6. #injection
7. #changed
8. #dependency
9. #enables
10. #because
11. #change
12. #these
13. #decoupling
14. #class
15. #supports
16. #changing
17. #reduces
18. #goals
19. #replace