From Java 21 to 25: The Features That Changed Everything (#90)

Every six months, we get a new version of Java. Java 26 is just around the corner and will be released soon. But most companies stick to LTS (Long-Term Support) versions, which are maintained and receive security updates for many more years. Versions 8, 11, 17, 21, and 25 are such LTS versions. Hopefully, most of your systems are already on the latest versions and you are not stuck on 8 or earlier. As a reminder, 8 was released in 2014, so much has changed since then.If you are doubting moving from 21 to 25, or even from an earlier version to the latest LTS, this podcast is for you! Together with Jakob Jenkov, we discussed the most important changes, and this episode includes a few quotes from interviews recorded at conferences last year.GuestsJakob Jenkovhttps://www.linkedin.com/in/jakob-jenkov-4a3a8/Jonathan Vilahttps://www.linkedin.com/in/jonathanvila/Ryan Svihlahttps://www.linkedin.com/in/ryan-svihla-096752182/Mary Grygleskihttps://www.linkedin.com/in/mary-grygleski/Anton Arhipovhttps://www.linkedin.com/in/antonarhipov/Ronald Dehuysserhttps://www.linkedin.com/in/ronalddehuysser/Jonathan Ellishttps://www.linkedin.com/in/jbellis/Content00:00 Introduction of topic and guestTutorials by JakobPodcast #89: Quarkus and Agentic Commerce03:30 Bugfixes and performance improvements "under the hoods"Quote Jonathan Vila08:00 Java as a scripting languageQuote Ryan SvihlaCompact Source Files and Instance Main methodsLaunch Multi-File Source-Code Programshttps://www.jbang.dev/Quote Mary Grygleski15:03 GC ImprovementsGenerational ShenandoahTrash Talk - Exploring the JVM memory management by Gerrit GrunwaldWhat Should I Know About Garbage Collection as a Java Developer?19:44 Project Loom: Virtual Threads and Structured ConcurrencyQuote Anton Arhipov29:44 How Java evolves6-months release cycleHow incubator and preview features are used to get feedback from the communityLong-Term Support Short-Term Support versionsFoojay Podcast #28: Java 21 Has Arrived!Foojay Podcast #45: Welcome to Java 22Foojay Podcast #57: Welcome to OpenJDK (Java) 23Foojay Podcast #68: Welcome to OpenJDK (Java) 24Foojay Podcast #78: Welcome to OpenJDK 25!32:15 Project Leyden: Ahead-of-time featuresAhead-of-Time Command-Line ErgonomicsAhead-of-Time Method ProfilingAhead-of-Time Class Loading & Linking39:15 Project BabylonJava on CPU, GPU, FPGA?This is already possible with TornadoVMFoojay Podcast #82: OpenJDK Projects (Leyden, Babylon, Panama) and TornadoVM43:25 Class-File APIQuote Ronald DehuysserJavaFX In Action #22 with Matt Coley, diving into byte code and JARs with Recaf and JavaFX libraries49:20 Foreign Function and Memory APIThe FFM API: How OpenJDK Changed the Game for Native Interactions (And Made Pi4J Better!)jChampions Conference talk 'Foreign Function & Memory (FFM) API on Raspberry Pi'54:26 Vector APIQuote Jonathan Ellis + Ryan Svihla59:59 Removal of String templates01:00:26 Taking a look into the JVM of the future01:03:08 Conclusion