• Vector API

Java 19 delivers the fourth iteration in which the API has been extended to include new vector operations as well as the ability to store vectors in and read them from memory segments

• attern Matching for switch (Third Preview)

In Java 19, changed the syntax of the so-called "Guarded Pattern" (in the example below Instead of &&, we now have to use the new keyword when.switch (obj) {case String s when s. length() > 5 -> System.out.println(s.toUpperCase()); case String s -> System.out.println(s.toLowerCase());case Integer i -> System.out.println(i * i); default -> {}}

• Structured Concurrency

If a task consists of different subtasks that can be done in parallel (e.g., accessing data from a database, calling a remote API, and loading a file), we could so far use the Java executable framework for this. Structured concurrency, a concept intended to improve the implementation, readability, and maintainability of code for requirements of this type.

When Migrate from Java 8 or Java 11 or Java 17 to Java 19?

To keep it short: yes, you can. If you have a large, high-load enterprise application and still use Java 8, you will definitely see better performance, faster start-up time, lower memory footprint after migrating. Programmers working on that application should also be happier, as there are many improvements to the language itself.

Java 17 Features That Developers/Testers May Like

1.The new Java Record data type
2.Java text blocks
3.Helpful NullPointerException instructions
4.Switch statement expressions6.Remove the Experimental AOT and JIT Compiler
7.Deprecate the Security Manager for Removal
8.Foreign Function and Memory API