💡#Maven tip 👉 Make your builds more reliable by using Maven wrapper instead of a "plain" Maven. That way every developer working on your project will use the same Maven version and you'll eliminate one cause of non-repeatable builds. 👇

What do you think the most important role of a class is? And why object-oriented appshave two phases of execution? The answer might surprise you 👉 thejavaguy.org/posts/021-th... #java #seniordeveloper #oop #blatantselfpromotion

💡 #ClaudeCode tip 👉 Rules are a stunning feature which will make your CLAUDE.md manageable. Break it down into focused files, apply rules conditionally with glob patterns, and organize them better. For super deep dive read 👉 claude-blog.setec.rs/blog/claude-... #java #ai #tip #seniordeveloper

💡#Maven tip 👉 Does it get on your nerves when you see compiler warnings but the build passes? Simply add -Werror to compilerArgs and then run ./mvnw clean compile. You'll see BUILD FAILURE which now you must fix. Your code will thank you 😁 #java #tip #seniordeveloper

Watch this video from @anthropicai.bsky.social developers to see why skills are the future. Then go and build your first skill in Claude Code www.youtube.com/watch?v=CEvI... #ai #seniordeveloper

💡#Maven tip 👉 Add -Xlint:all to compilerArgs to enable all compiler warnings. Then run ./mvnw clean compile and Java compiler will print all the warnings in your codebase. #java #tip #seniordeveloper

💡 #Maven tip 👉 Add -Xlint:deprecated and -Xlint:unchecked to compilerArgs. Every time you compile you'll get warnings if you use deprecated APIs or unchecked conversion (say, from List to List<String>). Then fix them all! #java #tip #seniordeveloper

#Java developers free your calendars! jChampionsConference 2026 virtually everywhere online 📅 Thur 1/22/2026, Fri 1/23/2026, Mon 1/26/2026, and Tues 1/27/2026 jchampionsconf.com #conference #seniordeveloper

You use homebrew and want to quickly upgrade all your formulas, casks, and homebrew itself and to delete its old cached files? Run brew update && brew upgrade && brew cleanup --prune=30 and enjoy 🎉 #homebrew #productivity #tip #seniordeveloper

💡 Type .. in IntelliJ IDEA 2025.3 and you'll see a popup with useful actions. Choose one with up or down arrows and execute with Enter. Try with variables, methods, classes, it works everywhere! #java #intellij #tip #productivity #seniordeveloper

Want to quickly add a line to your CLAUDE.md directly from the Claude Code? Just type # your-custom-rule and CC will add it for you and make that new rule immediately available to the context 💪 #claudecode #tip #ai #seniordeveloper

Did you know that Claude Code has bash mode? Just type ! your-bash-command and it will execute the command and put the output directly into the context. Deterministic invocation and no tokens wasted. Unfortunately tab-style autocomplete is not there yet. #claudecode #ai #tip #seniordeveloper

Don't use Lombok. It's just not worth of additional dependency, mandatory gradle plugin, mandatory IDE plugin, prolonged build times… Use #Java records, add logger explicitly, if you absolutely must then use IDE to create getters and setters (but usually you don't have to and you shouldn't anyway!)

IntelliJ IDEA has built-in code inspections and emits warnings when your code violates them. They are mostly useful, but sometimes you really want the code the way you wrote it. You can put @SuppressWarnings one line above but how do you know which warning you should suppress? 👇

🎉 Watch "Von 0 auf Spring AI" on our YouTube channel ▶️ youtu.be/qGAFAngH-14

🎉 The dream has finally come true! Thanks to Claude Code we can now write nondeterministic shell scripts: cat MyClass.java | claude -p 'Explain constructor chaining' --output-format text >result.txt #ai #claudecode #seniordeveloper

📣 Upcoming #Java User Group München talk "Erfahrungen aus einem Datapipeline Projekt mit Spring Cloud Data Flow" 🕖 on Monday 24.11 at 19:00h, 🏠 Hotel Eden-Wolff, Arnulfstraße 4. Our speaker will be Sven Lösekann. RSVP 👉 www.meetup.com/java-user-gr... #techtalk #javausergroup #seniordeveloper

💡 If you've installed Claude Code via npm but now want to switch to the native installer just do this: npm uninstall -g @anthropic-ai/claude-code brew install --cask claude-Code All your settings, plugins, MCPs etc. are still going to be there #ai #claudecode #seniordeveloper

Whatever you're doing right now STOP ✋ You owe it to yourself to watch AI Engineering in 76 Minutes (Complete Course/Speedrun!). You'll get up to speed with fundamental AI engineering concepts: foundational models, model selection, prompts, RAG, agents, finetuning… youtu.be/JV3pL1_mn2M

💡 To get really good results from your #AI assistant like Claude Code you must formulate surgically precise request. I often thought I was precise enough but got subpar output. I wasn't. As soon as my request became more specific so did the generated code.

EqualsVerifier 4.2.2 is out! It now supports EnumSets and EnumMaps for enums with only one value. Also, I fixed an error message that referred to Warning.ZERO_FIELDS, which was removed in version 4.0. All in all, very exciting stuff Check it out at github.com/jqno/equalsv... #java

🎉 Watch "Testing Spring Boot Applications Demystified" by Philip Riecks on our YouTube channel ▶️ youtu.be/WW3tAcaiSd0

Another exciting evening at #JUG Munich! @thjanssen123.bsky.social showed us all the goodies of #Spring AI and how we can integrate it into own applications. It's already production-ready with a lot of potential for future growth. My key takeaways 👇

#Java peers... This #Halloween, there are no tricks just treats! Take advantage of many #DevRel programs from Oracle's Java team: 🎃 Java on LinkedIn lnkd.in/ggSDpi45 🎃 Java on YouTube lnkd.in/g5bYYvW5 🎃 Java Newsletter lnkd.in/gTqBHHfX 🎃 Duke's Corner Podcast: lnkd.in/gvKzETp4 🎃 dev.java

Exclusive for #JUG Munich members - @thjanssen123.bsky.social will give away one copy of his best-selling book "HIBERNATE TIPS - More than 70 solutions to common Hibernate problems"! You just have to ask the most interesting question during his talk and the book is yours!

📣 Upcoming #Java User Group München talk "Von 0 auf Spring AI" 🕖 on Monday 03.11 at 19:00h, 🏠 Hotel Eden-Wolff, Arnulfstraße 4, 80335 München. Our speaker will be legendary @thjanssen123.bsky.social. RSVP 👉 www.meetup.com/java-user-gr... #techtalk #javausergroup #seniordeveloper

Excellent overview of Spring Boot Testing principles, tools and best practices by Philip Riecks yesterday in front of #JUG Munich crowd! Years of experience distilled in 90 mins meant a real gift of knowledge in this super important topic for #Java developers. My key takeaways 👇

Do you want to learn about state of the art in Spring Boot testing? To win a free eBook? To get 50% discount on the Spring Boot Testing masterclass? Then come at 19h tonight to the JUG Munich talk "Testing Spring Boot Applications Demystified" Hotel Eden-Wolff, Arnulfstraße 4, 80335 München.

📣 Upcoming #Java User Group München talk "Testing Spring Boot Applications Demystified" 🕖 on Monday 27.10 at 19:00h, 🏠 Hotel Eden-Wolff, Arnulfstraße 4, 80335 München. Our speaker will be Philip Riecks. RSVP 👉 www.meetup.com/java-user-gr... #techtalk #javausergroup #seniordeveloper

Wow! @adambien.blog held a magnificient talk + live coding tonight and showed us why #Java is the most productive platform for LLM-Driven Development. My key takeaways 👇

The Man, the Myth, the Legend! #Java developers from Munich don't miss @adambien.blog talk (well, live coding) "After 30 Years: Why Java is the Most Productive Platform for LLM-Driven Development" on Monday 20.10 at 19h at Hotel Eden-Wolff, Arnulfstr. 4. #JUG #techtalk #seniordeveloper

The weather in Munich is getting colder, but autumn at #Java User Group Munich is going to be hot 🔥 Spring Boot testing, LLMs, Java and more presented by Java Champions, book authors, and international speakers. More details coming soon!

Deep dive on new #Java 25 features but also API improvements, under-the-hood optimizations, GraalVM, WASM and more 👉 www.jvm-weekly.com/p/java-25-an... by @askowronski.bsky.social #Java25 #JDK25

Another view on what's sleek, cool and green in #Java 25 by @aichalaafia.bsky.social 👉 medium.com/@aichalaafia... #Java25 #JDK25

This is a complete, valid #Java 25 app. It's powered by JEP 512: Compact Source Files and Instance Main Methods authored by Ron Pressler, Jim Laskey and @gavinbierman.bsky.social. More about JEP 512 👉 openjdk.org/jeps/512 #Java25 #JDK25

📜 Opinionated article about what's new in #Java 25 by the legendary Cay Horstmann 👉 horstmann.com/unblog/2025-... #Java25 #JDK25

Did you know you can't really install Open JDK? Open JDK is an implementation of the #Java Platform Standard Edition (Java SE) and distributions like Eclipse Temurin, Azul Zulu, Amazon Corretto etc. are binary builds of Open JDK + some vendor specific stuff.

Did you know that #Java 25 brings 18 new features (JEPs), out of which 12 are final, 4 are in Preview state, 1 in Incubator and 1 Experimental? See the full list at openjdk.org/projects/jdk... #Java25 #JDK25

If you missed it yesterday, watch the #Java 25 Launch Stream at www.youtube.com/live/duIceCX... (starring @nipafx.dev, @billykorando.bsky.social, Ana-Maria Mihalceanu, Stuart Marks and others) #Java25 #JDK25

What day is it today? It's #Java 25 release day! Also it's 16.09.2025 so 16+9=25 and the 2025 ends with 25. Coincidence? I don't think so 😀 #JDK25 #Java25

Beware when asking #AI to explain some #Java snippet or concept. Sometimes it will give you a confident answer with a detailed explanation which sounds plausible but is completely or subtly wrong.

📣 A new video has landed on the #JUG Munich YouTube channel! See how AI helps in specification, implementation and testing at talsen team GmbH ▶️ youtu.be/ce5rHCLU8j0 Author of the talk is Hans Egermeier #java #techtalk #seniordeveloper

Even as #Java developers sometimes we have to write front-end code. Did you know you can write HTML and CSS super fast in @intellijidea.com? The secret is IDEA's built-in support for Emmet which can turn 20-30 characters you type into 10x more HTML. This is how you can use it (🧵 1/6)

You know some #Java haters? They probably think like in this video ▶️ youtu.be/m4-HM_sCvtQ?...

📣 ‼️ JCON Europe 2026 Free Ticket You can get a *free ticket* to the JCON Europe Conference in Köln (Cologne) April 20th until 23rd, 2026. Link is in the comments below 👇 #java #conference #jcon #jcon2026 #seniordeveloper

Prediction & hot take: the richer and more specific your #Java classes are, the easier it is for #AI assistants to generate correct code. ❌ don't use strings for IDs, ✅ create class ID ❌ don't use int for weight, ✅ create class Weight ❌ don't keep dates as longs but ✅ use Instant or LocalDate.

📣 Upcoming #Java User Group München talk "Die Zeit der manuellen Softwareerstellung geht zur Neige – oder generative KI produktiv einsetzen" 🕖 on Monday 14.07 at 19:00h, 🏠 IT-Rathaus der Stadt München, Agnes-Pockels-Bogen 33, 80992 München. Our speaker will be Hans Egermeier. 🧵👇

My small win for this week is that my first PR has landed in the @langchain4j.dev project. If you want to rise to the senior level or beyond, contributing to open source is one of the best decisions you can make: 👇

🚨 SHOCKING: Google can now detect #AI written content! If you rely on ChatGPT, Claude, DeepSeek you need to fix this NOW. Here's one trick to make your writing 100% undetectable: 👇

GitHub CEO Thomas Dohmke said yesterday that it's important to retain manual coding skills despite #AI boom. I'd add that mastering object-oriented design (OOD) is MORE critical nowadays, not less. Here's why 🧵 (1/6)