Spring Series — Setter Injection

Previous part of the series — Dependency Injection:

Spring Series — Dependency Injection

Setter injection is a pattern that describes injecting dependencies by calling setter methods on a class.

We can revisit this definition but before we do, let’s create a new coach implementation and see what it looks like.

Here we have created our SwimCoach implementation. We can see that it has a dependency and that we now assign the fortuneService variable with a setter method and not in our constructor.

Note: In the mySwimCoach bean we can see the property tag. This tag is what lets Spring know to use the name setFortuneService when creating the SwimCoach .

Let’s continue this example further by repeating the process for injecting attributes for our Coach .