Discussion on: Building Generic Payloads with the Builder Pattern in Java

[Partha Sutradhar]

Thanks Sergiy. Yes, it'll result in NPE without optional params. Let me know if we can do something to fix this?

[Sergiy Yevtushenko]

There is a Fluent Builder pattern, suitable for cases when all (or majority) of parameters are required. You may find interesting this article.

[Partha Sutradhar]

Yes, Step Builder will force client to provide datum.

[Sergiy Yevtushenko]

Moreover, this pattern enforces order in which fields are assigned. This is helpful in many situations, especially when changes in code are compared.