Advantages of the constructor-based DI

The following are the advantages of a constructor-based DI in your Spring application:

• It's suitable for mandatory dependencies. In a constructor-based DI, you can be sure that the object is ready to be used the moment it is constructed.
• The code structure is very compact and clear to understand.
• When you need an immutable object then, through constructor-based dependency, you can ensure you get the immutable nature of the object.