🔸 TLDR
▪️ javaalmanac.io is a single place to explore Java releases (LTS/EOL/dev), see what changed between versions (API diffs), and browse feature histories (JEPs) — with an open data API backing it. 🧭✨
🔸 WHAT IT IS (AND WHAT IT’S NOT)
▪️ It’s a reference site about Java’s past + future: releases, features, bytecode levels, API changes 📅🧱
▪️ It’s not an “upgrade tool” that changes your code for you — it’s the map you use before migrating 🗺️
🔸 WHY I KEEP IT BOOKMARKED
▪️ Upgrade planning: quickly answer “what’s new from 17 → 21 → 25?” 🚀
▪️ API diffing: spot added/removed/modified APIs between two JDKs 🔍
▪️ Feature tracking: see which release introduced (or previewed) a feature + links to JEPs 🧠
▪️ Release awareness: LTS vs EOL status at a glance ✅⚠️
🔸 QUICK DEMO IDEAS (TRY THIS)
▪️ Check API changes between two versions (example):
▪️ Explore the structured data via the public API (example):
🔸 TAKEAWAYS
▪️ If you maintain Java apps, this is a low-effort, high-signal bookmark 📌
▪️ Use it before upgrading to reduce “surprises” in CI and production 🧯
▪️ Great for tech leads writing upgrade notes, and for devs learning Java’s evolution 📈
🔸 QUESTION
▪️ What’s your current “baseline” in production: Java 17, 21, 25… or still 8? 😄
#java #openjdk #jdk #softwareengineering #javadev #programming #backend #techlead #developerexperience #opensource
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