Tools for building better APIs.

The FBound project was created out of writing the FBound Guide to Advanced Fluent APIs, a guide for advanced uses of generic types. This guide was written to explain the generic type patterns and techniques used in creating the Page-Model-Tools web testing framework.

The FBound BuilderBase serves as a base class for any Builder type. This pattern allows inheritance, chaining, and re-use of your Builder.

Builder Base class extended by other Builders:
BuilderBase.java

Example User class with Record and Builders:
User.java

Example Facilitator Builder extending User Builder:
Facilitator.java

Example Membership Builder with “guided build mode”:
Membership.java

Extension marker interface can only be implemented by a BuilderBase class making it safe to cast to BuilderBase:
Extension.java

ExtensionUtils provides an Extension interface with access to its BuilderBase protected fields:
ExtensionUtil