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Re:Rust Is Eating JavaScript by afavour on Sunday February 16, 2025 @09:36AM (#43068362)
What always strikes me about posts like this is the lack of introspection: why did younger developers reject Java?

It’s easy to say “because they’re hipsters following trends” but I dipped my toe in the Java world years ago and found it immensely frustrating. Eclipse was awful compared to the lightweight editors I was using at the time. The language got in my way more often than it helped me.

I’m sure that’s not the case these days (indeed I’ve done a little Android-adjacent stuff and found it to be fine) but the idea that there were no downsides to Java at the time strikes me as unlikely.

Re:Rust Is Eating JavaScript by jfengel on Sunday February 16, 2025 @09:42AM (#43068404)
The design of Java is focused on code maintenance. That's exactly what young developers lack experience in. They know how to write greenfield code, by themselves. They haven't yet looked back at code they wrote and said, "ugh, what the hell was I thinking?"

Since Java was developed the world has shifted to accommodate a lot more rapid development and code you throw away rather than maintain. But experienced developers also know how often "prototypes" are still around decades later.

Java is also not perfect, and a lot of new languages are conscious of its faults. But the reason it's still around is that it's core principles are oriented to code that sticks around.

Re:Rust Is Eating JavaScript by jen20 on Sunday February 16, 2025 @09:55AM (#43068486)
> But the reason it's still around is that it's core principles are oriented to code that sticks around.

You could equally say this of COBOL.

> They haven't yet looked back at code they wrote and said, "ugh, what the hell was I thinking?"

Ironically, "what they hell were they thinking" is exactly the reaction I have to even Greenfield code written using Spring Boot or any of the other annotation driven nonsense.

The idea that programs written in Java are more maintainable than programs written in (say) Go, where you can read what the program does end-to-end instead of having to guess at what garbage has been generated by Lombok or overridden by some random JAR on the class path is bizarre. Let's not even talk about Gradle.

Re:Rust Is Eating JavaScript by sorokod on Sunday February 16, 2025 @11:12AM (#43069116)
My opinion is that Spring usage should be minimised as much as possible but it is a matter of fact that Spring is not Java.
Re:Rust Is Eating JavaScript by wiseowise on Sunday February 16, 2025 @01:29PM (#43070308)
It is mainstream Java, though.
Re:Rust Is Eating JavaScript by sorokod on Sunday February 16, 2025 @01:52PM (#43070515)
Yes, it (Spring) is. However its current scope creates more problems then it solves.
Re:Rust Is Eating JavaScript by jen20 on Sunday February 16, 2025 @08:15PM (#43073762)
Spring may not be Java (The Language), but it absolutely is Java (The Ecosystem).
Re:Rust Is Eating JavaScript by jfengel on Sunday February 16, 2025 @10:44AM (#43068891)
Yeah, I'll defend Java, but I won't defend Spring. I have no idea what they were thinking.

A lot of external Java framework is about inversion of control. It looks good on PowerPoint slides, but I think it's horrific to maintain (as well has hard to write). Inversion of control means you have no control, and the most common error case is "why didn't my code run?" But you can't use a debugger to tell you what didn't happen. Any breakpoints have to be set inside the framework code, which is open source but is not intended for your eyes.

Re:Rust Is Eating JavaScript by abraxas on Sunday February 16, 2025 @11:59AM (#43069493)
Yeah, spring was and still is, an abomination. Spring boot also. But it's not a requirement even if many Java projects fell into that trap.
Re:Rust Is Eating JavaScript by pjmlp on Sunday February 16, 2025 @05:48PM (#43072565)
//go:generate

Yep no magic...

Have you ever read Kubernetes source code?

Re:Rust Is Eating JavaScript by jen20 on Sunday February 16, 2025 @08:15PM (#43073756)
I have (in depth, often under the gun of a production outage).

Kubernetes is not a good example of idiomatic Go in any sense. Perhaps Spring Boot and friends are also not good examples of idiomatic Java, but they are absolutely the common case of what is found in the wild.

Re:Rust Is Eating JavaScript by pjmlp on Monday February 17, 2025 @01:05AM (#43075706)
Just like Kubernetes, and its related ecosystem at CNCF are the main raison dêtre why many of us put up with Go.
Re:Rust Is Eating JavaScript by jen20 on Tuesday February 18, 2025 @08:04AM (#43089012)
The difference is prevalence.

Kubernetes is a single (bad) Go project. Every piece of Java I ever see is AbstractFactoryProxyBean nonsense with annotations all over the show.

I don’t know of a Go project where I can’t start at main (for a given program) and work out how it works without a bunch of ecosystem context. I can’t think of a single Java program where I can.

Re:Rust Is Eating JavaScript by hot_gril on Sunday February 16, 2025 @12:47PM (#43069960)
I have experience with code maintenance. The only upside of Java is that it's faster than JS or Python. It's otherwise a worse language and ecosystem, and it was even worse before it had lambdas.
Re:Rust Is Eating JavaScript by hot_gril on Sunday February 16, 2025 @03:39PM (#43071445)
Actually... if it's for a web backend, NodeJS might be faster in practice.
Re:Rust Is Eating JavaScript by nouveaux on Monday February 17, 2025 @08:41PM (#43085218)
Java was so bad that Android took a hard pivot to Kotlin. If anyone understands the importance of code maintenance, it's Google. They built a language for it (Go). I think it's ok to look at historical Java for what it is and learn from it's mistakes. Modern Java is better. Unfortunately, it's developed a bad rap, and it looks like it's in a decline. Fortunately we have Kotlin, Go, Typescript, etc.
Re:Rust Is Eating JavaScript by wink on Tuesday February 18, 2025 @05:40AM (#43088141)
It's a very one-dimensional view.

My problems with Java are startup time and memory consumption (and NPEs).

If that's not your problem - fine. But writing web apps in the Java ecosystem has been terrible for many of the most important years (let's say 2005 to 2015) and that's where all the "young people" forsake it for... PHP, Rails, node.js.

(You can already guess that I'm not even counting myself as part of the younger generation here. I'd used used Java and the JVM intermittently between 2000 and 2020 but it has never been my favourite stack).

Re:Rust Is Eating JavaScript by abraxas on Sunday February 16, 2025 @09:43AM (#43068414)
It had a steeper learning curve than other languages or environments but that was for a reason. You got a lot in return. And those lightweight editors and environments are like that because they don't do very much.

And talk not to me about lightweight. I'm currently on Day 4 of setting up a Python environment in VsCode that doesn't suck. I'm nearly there though it's still a bit inferior to a 20 year old JBuilder install for Java but I guess it needs a few more years to get there. Oh and as I said, I'm on a long quest here to pave the road for my devs but it looks like this hodgepodge of extensions still won't deliver the experience I had decades ago.

Re:Rust Is Eating JavaScript by MrMcCall on Sunday February 16, 2025 @01:59PM (#43070586)
Isn't using VsCode for a non-Microsoft language going to be difficult, by (MS's) design? I'm not saying it can't/hasn't be/been done, but I doubt MS are making it easier to do so. It's been their m.o. for a long time now.

I'm also not saying there's a better option for you and your team, either, my friend.

As a python programmer using bare-bones vim (on purpose), having abandoned all fancy IDEs, I really wouldn't know where the state of the art is, anyway, but I doubt the MS leopard has changed its spots.

Re:Rust Is Eating JavaScript by surfaceofthesun on Monday February 17, 2025 @01:03AM (#43075683)
This feels true for other Microsoft products, but not VSCode. Besides, they embedded Python into Excel (for 365 users) over Typescript or C#.
Re:Rust Is Eating JavaScript by MrMcCall on Tuesday February 18, 2025 @03:41PM (#43094820)
Interesting.

Embrace & extend complete ;-)

This time it looks like 'integrate' will be the third step.

Thanks for the great info.

Re:Rust Is Eating JavaScript by dagw on Monday February 17, 2025 @11:54AM (#43080887)
Isn't using VsCode for a non-Microsoft language going to be difficult

Python is pretty close to a 'Microsoft language' these days. They've hired several Python core developers to make sure windows is first class citizen for python and the developing python on windows and with VSCode is as good an experience as possible. They also develop the official VS Code Python extension and language server as well as many other python tools and extensions.

I'd say the current state-of-the-art is either VSCode with the Microsoft python extensions or Jetbrain's PyCharm. Personally I slightly prefer PyCharm Pro, but it's pretty much a toss up.

Re:Rust Is Eating JavaScript by MrMcCall on Tuesday February 18, 2025 @03:40PM (#43094799)
Thanks for excellent breakdown.
Re:Rust Is Eating JavaScript by cosmic_cheese on Sunday February 16, 2025 @10:13AM (#43068631)
At least from an Android point of view, the JVM world still has its share of frustrations and lack of polish/QoL relative to other software development spheres. Gradle has me pulling my hair out multiple times each year for example, and yet for some reason nobody sees it fit to replace it with something less ridiculously complex and prone to error (user or otherwise).
Re:Rust Is Eating JavaScript by abraxas on Sunday February 16, 2025 @10:36AM (#43068832)
Yeah, gradle/maven was a mistake that happened along with most "app store" style 3d party library slingers.

I'm of the opinion that the world was a better place with Ant and when we had third party dependencies manually, deliberately adn deliberatively managed by hand in /jars/thirdparty

Re:Rust Is Eating JavaScript by pjmlp on Sunday February 16, 2025 @12:57PM (#43070032)
As long as you don't get to debug such builds....

As someone that was writing Ant scripts when CruiseControl was modern, and there was no Ivy in sight, not sure if it was such a better place.

I hated Maven at the beggining, exactly because we got some hipster company pushing for it during Maven early days, it was still hot out of the oven.

20 years later, I don't see a reason to use anything else other than Maven.

Re:Rust Is Eating JavaScript by mike_hearn on Sunday February 16, 2025 @12:27PM (#43069776)
Jetbrains have a project to try and replace Gradle.

I've looked at it also. The problem is incentives. Will developers pay for a better build system? Probably not. Then, what people use is whatever happened to be given away for free first.

Another problem with shifting Gradle is that lots of libraries now come with build system plugins too, so you'd need to replicate all that logic into whatever new build system you create. And it's actually not easy to get everyone to agree on what they don't like about Gradle. Say "imperative not declarative" and half of devs will agree and the other half will say, no, you need programmatic configuration because build systems are genuinely complex. Etc.

Re:Rust Is Eating JavaScript by wiseowise on Sunday February 16, 2025 @01:32PM (#43070327)
It’s both now.

https://gradle.github.io/declarative-gradle/

Fingers crossed.

Re:Rust Is Eating JavaScript by mike_hearn on Sunday February 16, 2025 @01:41PM (#43070413)
I've long since given up on Gradle being able to get this stuff right. The syntax they're proposing is the THIRD similar-but-incompatible syntax they've adopted after Groovy and Kotlin. Good luck figuring out which is in use by looking at a code sample.

The biggest problem with Gradle is not Kotlin or even Groovy syntax. Kotlin isn't a bad language to use even for writing configuration. It's that the entire thing is designed in extremely confusing ways from back to front, and has a lot of awkward design choices and bugs that result in a hyper-complex user model.

What the JVM world needs is a totally new tool that has the same feature set as Gradle but with a drastically simpler mental model behind it. The only real contender right now is Bazel, I think.

Re:Rust Is Eating JavaScript by pjmlp on Sunday February 16, 2025 @12:54PM (#43070019)
We just keep using Maven, there must be valid reason on customer side why we should use Gradle instead of Maven on our Java consulting projects.
Re:Rust Is Eating JavaScript by pjmlp on Sunday February 16, 2025 @12:46PM (#43069957)
Don't blame Java for the misteps of Google and Android team.

Android started being devleoped mostly by C++ refugees, that is why originally all framework code is full of m_ prefixes.

Then the whole standard library fragmentation that persists to this day.

Despite the whole excuse why Dalvik was created, Nokia and Sony-Ericson had quite good JVM implentations for Symbian.

When Kotlin was introduced they stiffled Java on purpose, left it on Java 8, using Java 8 examples to promote Kotlin, and have since Android 12, started to finally update ART to more modern versions, because as it turns out, even with Kotlin, loosing compatibility with the Maven Central ecossytem isn't that great.

Still, it is mostly Java 17, and all the ongoing improvement in Java land across all JVM vendors, will most likely never land on Android.

Android is not Java, even though it relies heavily on the ecosystem for its tooling.

Android is basically Google's .NET, and Kotlin plays the same role as C# in relation to Microsoft's J++, that lead to Sun's lawsuit.

Re:Rust Is Eating JavaScript by littlestymaar on Sunday February 16, 2025 @10:10AM (#43068612)
Exactly! I got my first job in Java after a few years as hobbyist programmer in other languages (mostly PHP and JavaScript but a few others too) and what struck me was that the tooling was both mandatory and painful to use.

I wasn't fond of JavaScript (In particular, I never liked dynamic typing), but when I had the opportunity to work in node.js instead of Java I took it immediately, just to avoid the pain and suffering that the Java toolchain inflicted on me.

Re:Rust Is Eating JavaScript by FeloniousHam on Monday February 17, 2025 @10:51AM (#43080167)
Java is a language of bondage and discpline. And architectures. And myriad pointless interface definitions. And overblown class hierarchies for problems ill-suited to the OO paradigm.

I started my career in Java, and worked in it for 20 years before I really started using Javascript in anger. I didn't (and don't) like Javascript, but the freedom for prototyping was a revelation. When Typescript appeared, I fell in love.

Re:Rust Is Eating JavaScript by bitwize on Sunday February 16, 2025 @11:53AM (#43069451)
Speaking as a younger developer at the time, Java just seemed weak compared to my favorites -- Common Lisp and Scheme. It lacked a proper procedural abstraction and forced you to do everything through classes and objects in a way that not even Smalltalk, having blocks, demanded. This was especially the case when it became an enterprise language and the standard development process involved lots of boilerplate. Also, a lot of kids came out of school knowing almost only Java, and it seems they were cut off from different worlds of development which could provide some insights. Even C++, which I loathed, had things to teach.

I've grown up a bit since then, and so has Java. These days I work in Java for my day job, and it's perfectly fine. I don't even mind all the boilerplate, I can look at a page of code and just see blonde, brunette, redhead.

But I still love Common Lisp and Scheme much more.

Re:Rust Is Eating JavaScript by darthrupert on Sunday February 16, 2025 @10:14AM (#43068641)
Yup. As an older programmer I can say that there were indeed very good reasons back then to stop using Java. Mostly related to JVM but also the language lacked lots of features.

Java today looks like a fine platform, though.

Re:Rust Is Eating JavaScript by watwut on Sunday February 16, 2025 @10:03AM (#43068542)
In my experience, young people who hated java never worked in java and knew nothing about it except that it is evil.

The second thing however is that fronted is better off in non-java languages, you can afford to do small backend in typescript and what not. And larger enterprise projects were done in java the whole time.

Re:Rust Is Eating JavaScript by javajosh on Sunday February 16, 2025 @09:43AM (#43068411)
But the comment you're replying to doesn't say Java doesn't have any downsides. It just says that Java has a great story for doing shared types between client and server, which is true. It's also true that Java as a language has gotten a lot better over time. This is I think thanks to pressure from other languages written for the jvm like kotlin, And also developer feedback for those who work in other languages like JavaScript. Java is old and boring. Just like go is new and boring. Rust has plenty of downsides this idea that it's easy to use. Seems wrong to me. The borrow checker is famously difficult to work with despite being a central feature of the language. The really big upside to JavaScript is that it's the native language of browsers and so in a weird way. If you want to get closest to the metal so to speak, JavaScript is a better option for most deployed applications. It's interesting to note that the op's article mostly points to build tools that are written in rust rather than applications and I think that's telling.
Re:Rust Is Eating JavaScript by ludwik on Sunday February 16, 2025 @10:25AM (#43068724)
> But the comment you're replying to doesn't say Java doesn't have any downsides

Yet it blames "hipsters" for throwing "it all in the garbage," implying that there was no rational reason for people to switch away from Java. Naturally, people respond by sharing their reasons.

Re:Rust Is Eating JavaScript by maccard on Sunday February 16, 2025 @10:01AM (#43068527)
Java is verbose, is a resource hog, requires runtime management for basic app performance, the major frameworks (used to) require an awful lot of boiler plate, the developer tooling almost necessitates an IDE which 10-15 years ago meant eclipse which was slow, bloated, and unstable. There’s also always been licensing “fun” with oracle, sun, and the jdk.
Re:Rust Is Eating JavaScript by watwut on Sunday February 16, 2025 @10:07AM (#43068576)
What are you talking about, seriously. 10-15 years ago, eclipse was neither slow nor unstable. It worked perfectly well. IntelliJ was not slow or unstable. There were not real major licensing issues.

As a newcommer to javascript, I was able to learn faster and produce same quality faster then non-IDE developers. Not because I would be smarter or more talented, but because I had no emotional need to prove myself by not using ide.

Re:Rust Is Eating JavaScript by maccard on Sunday February 16, 2025 @10:36AM (#43068828)
Eclipse was _the_ tool when I was working with Java at the time. Slow and unstable is definitely my lasting memory, compared to virtual studio 2008/2010 which was fast and powerful.

> there were not real licensing issues

Oh yes there were. Even in 2024 the “which JDK are you running on” debate still goes on. There are notable differences between corretto and openjdk, and openjdk and Oracle JDK. Here [0] is a stack overflow question that notes it was asked 10 years ago that talks about the various JDKs and the license change where oracle started charging for JDK access.

As for your point about IDE’s vs non-IDE’s that’s a straw man. I said that you were forced to used an IDE for Java (which is of course not technically true but compared to rails which took of at that time it is), but also that the IDE du jour (eclipse) was pretty monstrous.

I’ve said this on here before but the minute maven gets introduced into a project build times are measured in minutes. My current work project is c# and I can run my entire test suite faster than the jvm got itself up and running on my last kotlin project. Even IntelliJ and co suffer from these limitations - manually bumping the memory limits for IntelliJ and friends in 2024 is practically a requirement, and the startup times are very Java inspired.

[0] https://stackoverflow.com/questions/22358071/differences-bet...

Re:Rust Is Eating JavaScript by watwut on Sunday February 16, 2025 @02:39PM (#43070961)
If you mean visual studio for dotnet and it is comparably piece of crap. A lot of unexplained behavior and it generally feels like someone just wanted to check boxes. Dotnet and visual studio actually made me love love a lot more after I worked with them.

Java and Eclipse are waaay better then C# and visual studio. Kotlin is a pure pleasure against C#.

Also, I see people using different JDKa on the same project. That there is competition is a good thing, it is not like you was locked in one.

Re:Rust Is Eating JavaScript by neonsunset on Sunday February 16, 2025 @02:52PM (#43071068)
> Java and Eclipse are waaay better then C# and visual studio. Kotlin is a pure pleasure against C#.

Except, unlike Kotlin, C# has a rich selection of what to use for development across a variety of platforms and is not constrained to JVM's type system limitations, allowing the syntax differences to have meaningful impact on the code execution.

It also has excellent, comparable to Go and Rust, CLI tooling to further streamline the process of quickly managing, building, testing, running and deploying projects, something JVM ecosystem is yet to provide an alternative for.

Re:Rust Is Eating JavaScript by maccard on Sunday February 16, 2025 @04:35PM (#43071925)
> If you mean visual studio for dotnet and it is comparably piece of crap. A lot of unexplained behavior and it generally feels like someone just wanted to check boxes.

I disagree. dotnet has it's quirks, but so does every mature ecosystem. I wouldn't use "piece of crap" to describe it (or java) and I get that it's an opinion, but I think your opinion is more misguided than what yo're accusing other people of believing.

> Kotlin is a pure pleasure against C#.

My last project was a kotlin backend powering a C+ desktop app. The kotlin backend took longer to compile than the C++ did. Kotlin is the kitchen sink bolted onto Java. It's definitely a nice environment to work in, but it's certainly not a more streamlined java.

> That there is competition is a good thing, it is not like you was locked in one.

If by competition you mean OpenJDK forks with minor differences then yes there's competition. To me that's not competition, that's fragmentation.

Re:Rust Is Eating JavaScript by ludwik on Sunday February 16, 2025 @10:21AM (#43068687)
> What are you talking about, seriously

It's probably unavoidable that people's memories will differ, but personally, as someone who worked with Java 10–15 years ago and then ran away as fast as he could, these are the things I remember most: the IDEs being awfully slow and unstable (though quite powerful for their time) and the language/ecosystem being painfully verbose and full of boilerplate and layers of indirection. I remember how, after switching away from Java, I felt elated by how easy and maintainable things could be when I was allowed to use simple, fast tools and write straightforward code that just did what it was supposed to do.

Re:Rust Is Eating JavaScript by leptons on Sunday February 16, 2025 @01:01PM (#43070061)
Yes, 10-15 years ago, Eclipse and IntelliJ were unbearably slow, overly complex, and made developers very frustrated.
Re:Rust Is Eating JavaScript by abraxas on Sunday February 16, 2025 @01:31PM (#43070321)
Yeah but that was when product managers broke it. The early days eclipse circa 2002 was amazing
Re:Rust Is Eating JavaScript by mceachen on Sunday February 16, 2025 @03:41PM (#43071465)
15 years ago, it took a full 10 minutes to launch IDEA or Eclipse and have it finish opening a large (100kloc+) java project on a brand-new high-end MacBook Pro.

3-10 crashes per day were common.

Lots or coffee breaks, or at least switching back to emacs to just finish editing whatever classes you were touching.

Re:Rust Is Eating JavaScript by cratermoon on Sunday February 16, 2025 @04:03PM (#43071676)
> The language got in my way more often than it helped me

Got in the way how? By insisting that things have types and one cannot blindly add an object to an array [] + {} and expect it to behave? Never mind that in Javascript adding an array to an object {} + [] gives a different result.

ETA: for bonus points, what does {} + {} return?