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Java 19
- Java 19 has been released on September 20, 2022. You can download Java 19 here. In this release, the virtual threads, which have been under development for several years within Project Loom and are now finally included as a preview in the JDK. Also, the Foreign Function & Memory API has reached the preview stage after five incubator rounds.
howtodoinjava.com/series/java-versions-features/Java Versions and Features [Updated upto Java 22] - HowToDoInJava
Jul 2, 2023 · Java 10: Introduced features like local variable type inference (var keyword) and the experimental garbage collector (Epsilon), enhancing code conciseness and providing performance testing ...
Sep 22, 2023 · Since the release of version 8, up to version 21, Java is shaped by 232 JDK Enhancement Proposals (JEPs) and many more smaller updates, each of which brings some improvement to the platform. This page is a categorized and curated list of the most important improvements.
May 7, 2024 · 23. Java, the versatile programming language, has been on a transformative journey. Starting with Java 8, exciting features changed how developers code. From nifty lambda expressions for...
6 days ago · Previously proposed features include removing the 32-bit x86 port; synchronizing virtual threads without pinning; simple source files and instance main methods; permanently disabling the security...
- Virtual Threads – Jep 444
- Sequenced Collections – Jep 431
- Record Patterns – Jep 440
- Pattern Matching For Switch – Jep 441
- New Methods in String, Stringbuilder, Stringbuffer, Character, and Math
- Preview and Incubator Features
- Other Changes in Java 21
- Summary
When scaling server applications, threads are often a bottleneck. Their number is limited, and they often have to wait for events, such as the response of a database query or a remote call, or they are blocked by locks. Previous approaches, such as CompletableFutureor reactive frameworks, result in code that is extremely difficult to read and maint...
What is the easiest way to access the last element of a list? Unless you use additional libraries or helper methods, in Java – so far – it is the following: In Java 21, we can finally replace this behemoth with a short and concise call: Perhaps you’ve also needed to access the first element of a LinkedHashSet? Until now, this required the following...
“Record Patterns” were first introduced in Java 19 as a preview feature. They can be combined with Pattern Matching for instanceof and Pattern Matching for switchto access the fields of a record without explicit casts and without using access methods. This sounds more complicated than it is. The best way to explain record patterns is with an exampl...
“Pattern Matching for switch” was first introduced in Java 17 as a preview feature and, in combination with Record Patterns, allows switch statements and expressions to be formulated over any object. Here is an example: Without Pattern Matching for switch, we would have to write the following less expressive code instead (thanks to Pattern Matching...
Not all changes can be found in the JEPs or release notes. For example, some new methods in String, StringBuilder, StringBuffer, Character, and Math can only be found in the API documentation. Conveniently there is the Java Version Almanac, with which one can compare different API versions comfortably.
Even though Java 21 is a Long-Term Support release, it contains new and resubmitted preview features. Preview features must be explicitly enabled with the VM option --enable-previewand are usually slightly revised in subsequent Java versions.
Let’s move on to the changes we won’t usually be confronted with on a daily basis. At least not directly. Unless, for example, we are responsible for selecting the garbage collector and its optimization. Then the two following JEPs should be interesting:
The new LTS release Java 21 brings one of the most significant changes in Java history with the finalization of virtual threads, which will significantly simplify the implementation of highly scalable server applications. Record Patterns, Pattern Matching for switch, Sequenced Collections, String Templates, and Unnamed Patterns and Variables(the la...
Apr 19, 2024 · Learn about the different version history of Java and its features. This page covers all versions from JDK 1 to the latest Java 22 release.
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Jan 21, 2024 · Learn the new features in Java 21 LTS, including Virtual Threads, Unnamed classes, Sequenced Collections, Scoped Values, and Record Patterns.
