cross-posted from: https://programming.dev/post/15638499

A list of major Java and JVM features since JDK 17 to 22,

New language features JEP-409: Sealed Classes (17) JEP-440: Record patterns (21) JEP-441: Pattern matching for switch (21) JEP 456: Unnamed Variables & Patterns (22)

API changes JEP-306: Restore Always-Strict Floating-Point Semantics(17) JEP-382: New macOS Rendering Pipeline(17) JEP-400: UTF-8 by Default (18) JDK-8301226 – Clamp method for java.lang.(Strict)Math (21) JEP-439: Generational ZGC JEP-444: Virtual threads (21) JEP-454: Foreign Function & Memory(FFM) API (22)

Security JEP-452: Key Encapsulation Mechanism API (21) JDK-8275252: keystore file Features JEP-408: Simple web server (18) JEP-423: Region pinning for G1 (22) JEP-458: multi-file source-code programs (22) JEP-423: Region pinning for G1 (22) JEP-458: multi-file source-code programs (22)

Documentation JEP-413: Javadoc code snippets (18)

Deprecations

Lookahead Scoped values + Structured concurrency Module import declarations

I teach a course in java and springboot for beginners. I would like to walk my students through the code of a real world java or springboot application. Can anyone recommend a good example?

https://lemm.ee/post/29785400

So I'm making a project in SpringBoot with Oauth security.

If I use Auth0 as my Authorization Server, I can register an application there and just say that I want user to be able to login with Google an Facebook. That's all it takes.

If I use Keycloak as my Authorization Server, I can also have users choose Google or Facebook as there prefered login, but in order to provide that, I have to register my app with Google and Facebook first.

So how come it's so easy with Auth0 and a little less easy with Keycloak? Is it a contract thing, does Auth0 have contracts with all these providers or something?

In this blog post, we will explore how to detect and prevent these anti-patterns using pair programming, code reviews, and observability.

cross-posted from: https://programming.dev/post/11703178

In this article, we’ll examine cache misses and, in general, learn about the caching concept and how to implement it in Spring Boot.

“An issue introduced by macOS 14.4, which causes Java process to terminate unexpectedly, is affecting all Java versions from Java 8 to the early access builds of JDK 22. There is no workaround available, and since there is no easy way to revert a macOS update, affected users might be unable to return to a stable configuration unless they have a complete backup of their systems prior to the OS update.”

Let's write a GitHub Crawler and let's throw in everything Java (21) has to offer:

virtual threads and structured concurrency,
pattern matching and data-oriented programming,
type inference, records, and sealed types,
text blocks and template strings,
a modern HTTP client and improved collections,
modules and OS-specific binaries.

The end result will look very different from just a few years ago, let alone 10. This is not your dad's Java!

cross-posted from: https://programming.dev/post/10707322

cross-posted from: https://programming.dev/post/10707319

In this article, we want to share our experience with fellow developers and offer insights using real-life examples on how to identify and optimize slow SQL queries, especially when working with relational database management systems like PostgreSQL, MySQL, MSSQL, Oracle, etc.

I find Maven sites look incredibly dated and I couldn't find a nice way to integrate other auto documentation tools such as MKDocs.

So I've written a series of Apache Velocity templates which integrate Bootstrap, I've tried to respect Bootstrap components and the layout/structure of Apache projects (you'll find various configurations under 'layouts').

You can apply various bootstrap themes to it to improve it dramatically.

Things you can do right now to learn new and valuable things that can improve your code.