Spring Boot 3.5 open source support ended June 30, 2026. If you're on 3.x, this upgrade is coming. I took a real Spring Boot 3.5 app to 4.1 live. No slides. The missing H2 console, Jackson 3, and JSpecify null safety. Every break fixed and explained. https://youtu.be/HiPkoGTeNJc

Spec-driven dev tools feel like overkill for one person. So I wrote down the plan I already use as a handful of skills. Then I built a Spring Boot store with Stripe checkout. 57 tests, all green. A retro after every build edits the skills. https://youtu.be/bHJZiM2XM-w

Spring AI now has an official TypeSafe project. We build a model router from an empty app in 4 classes on one dependency. Send a prompt, get back which tier answers (luna, terra, sol, or astra) plus a confidence score in about 300ms. https://youtu.be/_5V6sJxRgqk

You're not behind on AI coding agents. You just need three basics to start with Claude Code: the loop, the permission prompt, and context. Everything else can wait. https://youtu.be/BiKxFmirPpw

An AI that doesn't generate text. It decides. Three apps built with Jev: - Sort 100 comments in seconds - Grade your blog draft as you type - Pick the right model before a token streams All buildable this week. https://youtu.be/vMpPDJ3bwXI

Six files to one line. I turned last week's hand-rolled Jev client into a Spring Boot 4 starter. Add the dependency, set one env var, inject JevClient, get typed answers. Then we open the starter to see how auto-configuration, conditions, and the imports file work. https://youtu.be/fq_nYo4BnrY

Jev doesn't generate text. It answers typed questions in about 100ms. One RestClient, one endpoint, and a messy support message returns three typed answers. No prompt. No JSON parsing. Here's how to call it from Spring Boot 4. https://youtu.be/K4rqR6hcsAo

Flip one flag and the user call fails at 200ms. The Future version still takes a full second. The StructuredTaskScope version returns in 200ms and interrupts the orders call on the spot. Same method, 3 ways, on the JDK 27 API. https://youtu.be/Nl-a4ukWodk

8 months. 309 commits. 8 months. 309 commits. 80,000+ lines of code. . I built the Spring Boot app that runs my whole YouTube channel. The scary part: Claude doesn't just build it, it operates the app too through its MCP server. Here's how. https://youtu.be/9O-E7DAfYrE

Skills aren't just for coding. I drop in one raw podcast recording. Four Claude Code skills turn it into an mp3, a transcript, a description on my clipboard, and a spring.io PR. No manual steps. Anything you repeat is a workflow. This is where I start. https://youtu.be/q3Fk6ADuaSI

Real .cfm templates running inside Spring Boot 4. cfoutput, cfif, and cfloop all render in the browser. The trick is one property that flips the BoxLang starter into its ColdFusion parser. It even runs on port 8500. https://youtu.be/CLzEQ1Gtqy4

Boris, the creator of Claude Code, mapped out 5 steps of AI adoption. Find out which step you're on and what it takes to level up. https://youtu.be/g12mC2J11d0

I caught my AI making three mistakes in a Spring Boot app I know cold. An hour later it gave me Swift code I shipped without blinking. Same model. The code I should trust less felt better. Here's why that happens. https://youtu.be/UuM2-nRsLuA

Outdated dependencies are an easy target for attackers. AI can help you upgrade them the right way. This video shows when to reach for AI and how to approach the upgrade safely. https://youtu.be/MYtia9xsTrQ

A system prompt is not a security layer. I built 4 Spring AI safeguards (scope restriction, keyword blocking, output leak detection, PII masking) and show what each one catches and misses. Every one can be bypassed alone. Layer them: https://www.youtube.com/watch?v=EZ6Uh1-8Ui4

That docker-compose.yml sitting in every Java repo confuses a lot of people. It's not about putting your app in a container. It runs the stuff your app needs, like Postgres, so any project just runs when you clone it. Clone. Run. Done. https://youtu.be/0LNVXHKKJb8

Spring AI 2.0 replaces per-model tool loops with a composable ToolCallingAdvisor in the ChatClient chain. Watch it run live: stream tool-call events into a "Calling tool..." UI, then take manual control when you need it. https://youtu.be/g6IhOsFKM7c