Modern Java - A Guide to Java 8 VS Codename One

**5. Modern Java - A Guide to Java 8 ** This tutorial covers all the new features of Java 8 with simple code samples, making it a helpful resource for learning and using Java 8. https://github.com/winterbe/java8-tutorial

Here are some resources I've found helpful and have read or are on my backlog to catch up with these developments:

- https://github.com/wesleyegberto/java-new-features (terse, includes links to JEPs, good jumping off point)

- https://github.com/winterbe/java8-tutorial (quick tour through features of Java 8)

- https://winterbe.com/posts/2018/09/24/java-11-tutorial/ (same for Java 11)

Books:

- Java 8 in Action / Modern Java in Action (Raoul-Gabriel Urma, Alan Mycroft, Mario Fusco; 2014 and 2018 respectively)

- The Well-Grounded Java Developer (Martijn Verburg, Benjamin Evans, Jason Clark; 2022) - not specifically focused on new features but does cover them in the context of going deeper into Java and the JVM.

Otherwise, learning Maven has been really important. As for learning the language, I liked Winterbe's guides. Here's one. https://github.com/winterbe/java8-tutorial

PR #5035 lands the com.codename1.ai package, the ChatView UI component, the speech and TTS additions, and the build-time dependency injection that wires the native pieces in. PR #5057 lands the developer-guide chapter and the agent-skill addition so any project generated from the Initializr inherits the new APIs through its bundled AGENTS.md.

PR #4999 (iOS) and PR #5012 (Android) close that gap. As of this week any JDWP-speaking debugger (IntelliJ IDEA, jdb, VS Code's Java Debugger, Eclipse, NetBeans) can attach to a Codename One app and treat the running process as a JVM.

Important: it seems that if developer mode is on in your device you might get an information dialog on the right side of your UI. This issue explains how you can turn it off.

Biometrics — PR #4987

The other change in PR #4946 is that every Java 17 project the Initializr generates now ships an AGENTS.md file at the project root and a Codename One authoring skill alongside it.

Last week's post introduced StickyHeaderContainer with an animated transition between section headers. Within a couple of days the issue tracker had #4849, the NONE and FADE transitions were not behaving correctly and the swap had visible jitter. We turned the fix around within hours of the report.

The shipping CSS sources sit in the repo at native-themes/ios-modern/theme.css and native-themes/android-material/theme.css for anyone who wants to read what each UIID is doing.

1. Codename One. Similar to swing, but focused on mobile https://www.codenameone.com

codenameone.com — Open source, cross-platform, mobile app development toolchain for Java/Kotlin developers. Free for commercial use with an unlimited number of projects