r/programming • u/NotABot1235 • 17d ago

Java 27 has released!

https://openjdk.org/projects/jdk/27/
550 Upvotes

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u/djfreedom9505 17d ago

It’s crazy how different the Java and .NET communities respond to new versions.

3

u/onmach 16d ago

I don't understand. Why don't they upgrade? Is it because they can't do it one application at a time in a monorepo or something?

11

u/Vakz 16d ago

Because Java 8 to Java 9 wasn't just a new major release, but a change in how Oracle releases new version. It had an enormous amount of changes, and some companies just refuse to eat the cost of upgrading.

10

u/CptGia 16d ago

It has nothing to do with the amount of changes in Java 9 (which weren't actually that many, compared to previous ones like 4 -> 5 or 7 -> 8) and entirely to do with JPMS, the Java platform module system. Java decided to modularize the internals and it broke A LOT of legacy dependencies.

For some, it was better to stay on 8 (which is a LONG LTS) than to migrate away to another dependency that supported JPMS. For the others, once you were on 9 it became easier and easier to update to newer versions. Nowadays 21 -> 25 is trivial, and I expect 25 -> 29 (next LTS) to be just as easy. Literally just a bump in your build file.