Let's assume an object constructed using a builder pattern. This builder pattern would contain a build method focusing on fields validation and then on conversion to the targeted type. This valid...

I have a (Java) class with many instance fields (many of which are optional). I would like all fields (thus class) to be immutable. So, I would like to use the Builder Pattern for constructing inst...

I was going through Effective Java book , and creating notes for my future reference , i came across Builder Pattern. Well i understood what it is and how its suppose to be used.In the proc...

I am learning the Builder Pattern In the above link (Java example), I noticed that the Builder offers interface to construct multiple components. Along with invoking them, we call the getProduct(...

I've seen this question rise here and there a few times, but I never found and answer I was happy with. From Wikipedia: Builder focuses on constructing a complex object step by step. Abstract F...

It seems like the builder pattern is good if you're making some linear chain of things (java's StringBuilder) or creating an object with many properties (PizzaBuilder). Can it be extended to build...

In a project of mine I have two packages full of DTOs, POJOs with just getters and setters. While it's important that they are simple java beans (e.g. because Apache CXF uses them to create Web Ser...

The Builder implements Cloneable and overrides clone() and instead of copying every field of the builder, the immutable class keeps a private clone of the builder. This makes it easy to return a ne...

Why can we not the different build steps within the constructor itself. if the build steps take arguments why can't they be provided as arguments to constructor and utilized within constructor to c...

I am a complete newbie when it comes to the use of factory classes and methods, patterns, etc - in fact I first learned of them here on Stackoverflow when browsing Java related questions :-) In re...

What is the difference between Builder Pattern and Flyweight Pattern in terms of usage, as both of them deals with large number of objects?

What tools/libraries exist that will take a struct and automatically generate an immutable wrapper and also a "builder" class for incrementally building new instances? Example input: struct Foo {...