The Power of Constructors
Explore the role of constructors in implementing use case-specific models with immutable classes. Understand how constructors validate parameters to prevent invalid object states, and why relying on constructors directly can help catch errors early during development. Learn the potential drawbacks of using builder patterns in maintaining parameter consistency and how compiler checks can support robust code management.
We'll cover the following...
We'll cover the following...
Passing multiple parameters to a constructor with build()
SendMoneyCommand, our input model above, puts a lot of responsibility on its constructor. Since the class is immutable, the constructor’s argument list contains a parameter for each attribute of the class. And since the constructor also validates the parameters, it’s not possible to create an object with an invalid state. ...