Setters AND ( not OR or VS ) builder patterns

Question

I have a situation where I use a builder pattern for constructing an object. Best example to give is the pizza code

public class Pizza {
  private int size;
  pr         


        

Answer 1

I think it could help someone in the future, but what about Copy constructor thou?

It will not break a contract of the immutability of an object and you will have an option to get a Pizza with different property values.

So you can basically use two approaches:

1. Pizza.Builder(pizza).cheese(cheese).build()
2. Pizza.from(pizza).cheese(cheese).build() as Akash Srivastava suggested

Both approaches basically expecting a copy constructor of Pizza or even feeding newly created builder instance from pizza parameter properties.