Demystifying Monads with Java
summary
Argues that monads are practical data structures with a unit/flatMap/get API, demonstrates Java uses like Optional and Stream, and shows how an Either for validation replaces nested ifs and exception-heavy code by returning success or error lists. Uses a Unix pipe analogy, walks through a naive save-customer service turned into an Either pipeline, notes Optional breaks some monad laws, mentions Try/Promise patterns and the Vavr library and recommends SICP.
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chapters (11)
- 0:00Introduction to piping
- 2:32Functional programming basics
- 3:58First-class functions in Java
- 10:38Demystifying monads
- 12:36Monad components and laws
- 14:45Practical monad usage
- 15:41Deep dive into monad laws
- 19:40Standard JDK monads
- 25:10Service layer patterns
- 28:31The Either monad
- 34:58Conclusion and resources
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