~/talk

Codepocalypse Now: LangChain4j vs. Spring AI

on YouTube 49m
Talkat JNation 2026 · 2026-05-26..05-27· [java, ai-assisted-development]

speakers

name:Viktor Gamov
website:http://gamov.io
name:Baruch Sadogursky
website:https://speaking.jbaru.ch

resources

video:https://youtu.be/nhTPX0cnh7c
slides:none on file

summary

Live coding builds an agentic Java app that reads calendar and attendees, generates tailored excuses, verifies them with a judge loop, and only sends emails after human confirmation; it uses LangChain4j and JetBrains Cook 1.0 plus a fake calendar, contacts and Gmail tool, plus persistent chat memory (SQLite) for six prior conversations. A lightweight classifier routes intent, a powerful model drafts text, a verifier loops until success, and a Tessel skill raises baseline correctness from ~25% by about fourfold.

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chapters (12)

  1. 0:00Introduction and setup
  2. 3:17Why agents over chatbots
  3. 6:50Introducing Kook framework
  4. 10:23Building a simple chatbot
  5. 13:15Adding tools to the chatbot
  6. 15:22Memory in agent frameworks
  7. 22:33Agentic workflows explained
  8. 28:10Demo of agentic workflow
  9. 35:35Visualizing agent flows
  10. 41:38Observability and tracing
  11. 44:05CooG framework and skills
  12. 47:18Workshop announcement

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