One of the most significant features of Java 21 is Virtual Threads (JEP 444). These lightweight threads reduce the effort needed for writing, maintaining, and observing high-throughput concurrent applications.
Shell redirection can be confusing. I’ve always wondered what 2>&1 means and why it’s needed, but as many others, I just copy/pasted things from the internet into my terminal and hoped for the best. What could possibly go wrong?
Around 6 years ago, I wrote about using Java for shell scripts. It was a hacky and fragile way to convert some Java code into a shebanged file containing the content of a Jar file.
However, Java evolved quite a bit since that article, so it’s time to look at it again.
Localization, or l10n, is an important step for any app to reach a broader market and be more inclusive. With Xcode 15, the IDE gained a versatile and easy-to-use way of handling localization: String catalogs.
A new garbage collector was introduced in Java 11, a low latency/high scalability GC called ZGC. And now, with Java 21, it has evolved into a generational GChugo .
Pattern matching is a declarative and composable approach for more powerful and expressive code. Java 16 added pattern matching for the instanceof operator, and we looked at pattern matching for switch before. Let’s look at another new kind of pattern matching: Record Patterns.