>>> Worked, and Yes. But thats due to legacy more than anything else, and because the builder tools team built a pretty sizeable ecosystem around dependencies/builds with Java, with a lot of templates out of the box.

amazon move fast in this space. if something have expensive or hurt innovation they move quickly off. sometimes company wide campaign to block "X" going to production. tell an amazon principal or sr. principal they only have java for legacy reason and they will ask you what company you work at.

>>> - Most performance heavy applications are written heavily with NDK. Google provided this specifically because the jvm layer doesn't suit things like games very well.

nobody here talk about writing super performance optimized thing. we not talking about games. dont know anyone using java for games and you writing strawman argument.

>>> BTW there was guidance at Amazon to use Kotlin over Java going forward because it results in a better maintainable codebase.

this not true. maybe you team has its own preference for kotlin. no company wide guidance on this. how i know? you not only person worked at amazon.

> Google is heavily investing into Fuschia, with Flutter/Dart, as the next gen mobile/home device OS. In general a lot of web app application style apps are written with React Native, which is structured very similarly to Flutter/Dart (as the code can be compiled to a JS web app as well)

yeah even amazon using react native for some apps. what this have to do with java? and what specifically it have to do with your assertion about using java mean not knowing computer science?

>>> Meanwhile, your favorite Java now has Spring4Shell circulating around, and I hopefully don't have to explain how in the case of Log4j, a developer willingly writing the network request/execute code as part of logging something is much, much worse than finding some bug that can make a program crash in very specific conditions.

bugs happen in any software. make no sense how this is indictment of java as language. you picking logging issues. even go has many logging frameworks. c++ std lib not include logging as first class afaik. again this argument have no merit.

>>> So you have things like big dependency injection frameworks that eat startup time, or things like Lombok that essentially hack the AST. There is no central authority controlling what Java is, so you get these Log4Shell, Spring4Shell and others.

nobody force you use big dependency injection framework or use Lombok. it your choice.

>>> At Amazon, every time you wanted to either run unit tests or start up the service, it took at least 10 seconds for everything to run before your code gets executed.

amazon has own flavor of build system. Brazil and it many variations for different languages very old..slow..some combination of both. if you work at amazon you should know about amazon tax.

>>> The only thing strong typing does is that it makes it harder for, lets say "entry level" devs to shoot themselves in the foot, since they are essentially using an API.

are you complaining on java or strong typing?

>>> The only thing strong typing does is that it makes it harder for, lets say "entry level" devs to shoot themselves in the foot, since they are essentially using an API

^ This comment make no sense. strong typing is like using an api? LOL

>>> But Java does provide ways to shoot yourself in the foot, which is why code reviews are a thing.

So move off java and we can stop doing code reviews?

>>> So in the end, if you didn't realize all of this, then you don't fully understand computer science.

language choice has nothing to do with knowing or not knowing computer science. this is one of most absurd comment seen. LOL :)

computer science not focus on any particular language. cs program may have course on programming languages..cover history of languages.. regular grammars.. what it means have abstractions. concepts critical to design of a language. it care nothing at all if you have fetish for python or go or angry tears about some java logging framework.

>>> If you do realize this, and still think Java is ok to use today, then you either are delusional, or are privy to some great wisdom that nobody else knows.

if java not okay to use then amazon distinguished engineer, sr. principal, and principal community would deprecate or ban language entirely. you wrote lengthy post. maybe you found yourself clever asserting point about java being slow for games. can assure you if you write this as amazon doc.. senior leaders not take you seriously.

calling people "delusional" for not agreeing with your opinion strong indication you presenting weak argument. and thats me very generous. this more like infantile "hissy fit" behavior. you confuse HN with reddit maybe.

you never answered question how language choice related to knowing or not knowing computer science.