What are the best practices for dependency injection in software development?

What are the best practices for dependency injection in software development?

Some best practices include using constructor injection, keeping dependencies minimal, and favoring interfaces over concrete classes.

Can you explain why constructor injection is preferred?

Constructor injection promotes immutability and makes it easier to manage dependencies, leading to more testable code.

What are the downsides of using service locators instead?

Service locators can hide dependencies, making the code harder to understand and test, which can lead to tightly coupled components.

How can I implement dependency injection in a Java application?

You can use frameworks like Spring or Guice, which provide built-in support for dependency injection.