Does it though? I mean I'm still teaching thread-safety and recursion to my interns... a solid foundation is a solid foundation.

For the fundamentals, sure, but many of the top sellers are going to be on things like React, Next, etc.

And in ten years after react is forgotten about, there will still be companies actively hiring Java developers

See you in ten years! We're a hop, skip and a jump from one click automated conversion from every legacy Java app to web and electron desktop compatible code and we can just retire Java entirely. in 2025, Java is not the most performant. It does not run in the most places. it is not the easiest to write or reason about. its advantage over anything else is momentum and it's losing that too.

React is just a formalizatio of a UI update pattern that exists in every app ever made except the ones that are bad. Source: written a lot of java and nobody is currently paying enough to make it worth doing again.

Yes. The autodesk fusion course that I learned 3D printing design off of on Udemy had a bunch of instructions for UI elements that had moved in the application.

It wasn’t a big deal but I would have still appreciated it if the author inserted some new recorded segments or re-recorded some content to make up for it.

> Mild counterpoint. Our professions(all things IT) moves bloody fast.

Some areas do, some areas not so much.

I have a colleague that's incredibly strong with databases (we use a mix of MySQL and PostgreSQL) and he's living off the learning he did 20 years ago when he was a junior Oracle consultant.

I live off the learning I did in Linux now that I administer Kubernetes clusters for a living. Once you get past the "cloud native" abstractions (and other BS) it's penguins all the way down, and I get to reuse most of my core Linux competencies I learned 10+ years ago (eg: I do tcpdump in prod, and it's quicker and more effective than many of the modern shiny tools).

> Some areas do, some areas not so much.

It still does change and you have to adapt.

E.g.

> databases (we use a mix of MySQL and PostgreSQL) and he's living off the learning he did 20 years ago when he was a junior Oracle consultant

And there's lots of changes here, e.g. vector stores, all the different query engine improvements, PostgreSQL IO improvements, etc and they all may impact your job. Your optimal query back then might not be the same. Living off the old learnings is like taking a 50% discount on the max potential.

> I live off the learning I did in Linux now that I administer Kubernetes clusters for a living.

And these have had changes consistently too e.g. io-uring and gateway api. You can only be in legacy for so long.

JS frameworks and chasing AI fads, perhaps. But fundamentals? Engineering principles? How CPUs work? Linux, networking, x86? Stuff that is decades old still applies.