Ask HN: What language should a Java dev switch to in 2022? | Hacker News Reader

Ask HN: What language should a Java dev switch to in 2022?

I'm feeling pretty limited by Java in terms of professional opportunities. It seems like I can only really find employment at old legacy companies with it. I would like to stay as a backend dev but I'm suffering choice paralysis at this point. I know python but don't really have much professional experience with it, so I've been looking at learning a JVM based language like Kotlin or Scala, but I'm also seeing people talking about Go or Rust as the future backend languages. What would you pick to commit the next 3-4 months to in a situation like this?

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Don’t make a programming language part of your identity, not even your professional identity. Programmers use languages as tools.

If you have significant experience with Java you can quickly pick up C#, Go, Python, PHP, Javascript. With just a little more effort you can learn C++ or Rust. Those languages already have big footprints in back-end work, we’re past calling any of them “the future.”

To really learn a language you have to use it in practice, learn the idioms and the ecosystem. You have to know databases in some depth since those make up a big part of web back-end programming.

Domain expertise and experience with any common language (such as Java) should get you in the door, especially if you move top companies in the same or similar business domain. Right now the job market has tightened up and more programmers than usual chase fewer jobs.

Clojure. Fluency in Java is a plus, due to interop. It’s a stable language - it accrues new features and gets faster but is intensely focused on backwards compatibility. I use Clojure for backend, ClojureScript for front end, and Babashka for scripting and throwaway tools.

> I'm feeling pretty limited by Java in terms of professional opportunities

I don't understand that. Java has great professional opportunities, I think you really need to look better.

But if you want to broaden your experience and get even more opportunities, I suggest:

1. Rust, if you are willing to go into low-level and embedded programming (best language for this right now) 2. Scala, if you are willing to tackle highly difficult concurrent programming and complex domains (best language for this right now in the JVM world so you can use your existing knowledge and get started easily) 3. Typescript, if you are willing to do frontend stuff and deal with the framework mess (best language on frontend by far)

Stay away from Go. This is a language for beginners. As an experienced Java dev you might like some of the parts, but the language does not "grow with you". Rust, Scala and Typescript do so.

> Java has great professional opportunities

I think they may improve as well. With GraalVM and fibers Java becomes a far better backend language.

If I had to pick I'd say Go, although I'm holding out on really committing to it myself due to a couple hang-ups I have, particularly with error handling. Rust is a great advancement in language design, and I've done some real work in it, but I've found it costly in terms of development time. Until some of the ecosystem issues Rust has get fixed it will not be a go-to language for work-a-day backend programmers.

Get serious about Python. Python matters.

There isn't really much to learn when going from Java to Kotlin. Most Java devs with a bit of experience should be "fluent" in Kotlin within two or three days.

What do you want to do?

Full stack: Typescript

Backend: Go, Python, Typescript

Systems: Rust, Cpp

I just want to make as much money as possible: COBOL

"I just want to make as much money as possible: COBOL"

That's only possible if you have significant experience and work as a consultant. COBOL itself is simple. The tricky part is understanding the rest of the system, such as the JCL.

Clojure: https://clojure.org/

It runs on the JVM, but it is a lot more fun than Java.

Java is still a good programming language.

Kotlin is so far pleasing for me. If you want to use it for backend dev then good news is it's officially supported in Spring.

Personally, I'm a mobile app dev, switched from Java to Kotlin a few years ago.

If you want to escape the JVM club, yep I think Go is a very popular route these days.

Why do Java developers wear glasses? Because they don't C#.

I would say look at python and typescript. These seem to be very common. We still use some Java at my company but those two are starting to replace it in some areas.

Rust. Go is played out at this point. If you wanna stay on the JVM, Scala. Echo Typescript as well for full stack.

> Go is played out at this point.

What do you mean? Go's being used more than ever.

We've hit peak Go. I don't think it's getting more popular than it currently is, especially when compared to Rust.

Wow, I read this after my post and I 100% agree. Exactly my suggestions as well.

Whichever you want; who cares if HN says Typescript or Go if you yourself don't want to work with those languages. Look for languages that look interesting to you and which also have some job opportunities.

I'm a fan of .NET/C#. Your experience would transfer quickly.

Kotlin is a great option, and isn't a big jump from Java!

gotta start with things you want to see yourself enjoying building then work your way backwards (what languages are required for those work)

Definitely C#

Lisp

why Lisp and what are some resources to get to speed?

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