Java 20 / JDK 20: General Availability • Hacker News Board

Re: Java 20 / JDK 20: General Availability

#21

Post by jvolkman » Tue, Mar 21, 2023, 3:36 PM UTC

Idiot_in_Vain wrote: post #9

Damn, time flies. I remember the excitement from the different alpha/beta versions that were coming out in 1994/1995.

Time only started flying with the release of Java 9. Prior to that versions stuck around for years.

Re: Java 20 / JDK 20: General Availability

#22

Post by voidfunc » Tue, Mar 21, 2023, 3:36 PM UTC

tw1984 wrote: post #14

[flagged]

That people still write this kind of drivel and actually believe it on this site is frustrating.

Every tool has a purpose and Java is a fantastic tool for a lot of use-cases.

Re: Java 20 / JDK 20: General Availability

#23

Post by somethingAlex » Tue, Mar 21, 2023, 3:38 PM UTC

tw1984 wrote: post #14

[flagged]

C++ for when you need to be very close to the metal.

Java (and C#) are still legitimate options for server side code when you want speed and type safety but managed memory.

Re: Java 20 / JDK 20: General Availability

#24

Post by pshirshov » Tue, Mar 21, 2023, 3:38 PM UTC

tw1984 wrote: post #14

[flagged]

Why "bad enough"? Java is getting better and the language feature set isn't really that big, I would rather call it austere. The language slowly adopts Scala features but still lags significantly behind it.

Re: Java 20 / JDK 20: General Availability

#25

Post by roschdal » Tue, Mar 21, 2023, 3:39 PM UTC

Java 8 is the best Java.

Re: Java 20 / JDK 20: General Availability

#26

Post by akavi » Tue, Mar 21, 2023, 3:39 PM UTC

Now even Java has pattern matching, what's Javascript's excuse?

Literally the only feature preventing Typescript from being my perfect language.

Re: Java 20 / JDK 20: General Availability

#27

Post by philipwhiuk » Tue, Mar 21, 2023, 3:40 PM UTC

pansinghkoder wrote: post #18

tw1984 wrote: post #14

[flagged]

You are right; lets start a linux kernel in rust. Send me a PR for that bootloader.

There are bits of the Linux Kernel in Rust.

Re: Java 20 / JDK 20: General Availability

#28

Post by mason55 » Tue, Mar 21, 2023, 3:41 PM UTC

garblegarble wrote: post #10

This is exciting, can't wait for the LTS release next year... that said, I don't much care for the "case SomeType t when ..." pattern matching syntax, I don't see the benefit of introducing a new keyword over using "if"... or even just "&&". To pinch the example used in[1]: case Tuner t && guitar.isInTune() -> ...; and case Tuner t if guitar.isInTune() -> ...; both seem as clear as case Tuner t when guitar.isInTune()…

In the case of &&, the left hand side of the expression (Tuner t) isn't a boolean expression.

In the case of "if", you're right, the grammar doesn't work, both because the syntax of Java already says that the if condition must be enclosed in parentheses and also because an if block is a statement and you need an expression here.

To make either of those work, you'd have to make the rest of the pattern matching syntax much worse.

Re: Java 20 / JDK 20: General Availability

#29

Post by Waterluvian » Tue, Mar 21, 2023, 3:41 PM UTC

akavi wrote: post #26

Now even Java has pattern matching, what's Javascript's excuse? Literally the only feature preventing Typescript from being my perfect language.

https://github.com/tc39/proposal-pattern-matching

I'm not sure if it's stalled or not. But it's being discussed.

Re: Java 20 / JDK 20: General Availability

#30

Post by papruapap » Tue, Mar 21, 2023, 3:42 PM UTC

garblegarble wrote: post #10

This is exciting, can't wait for the LTS release next year... that said, I don't much care for the "case SomeType t when ..." pattern matching syntax, I don't see the benefit of introducing a new keyword over using "if"... or even just "&&". To pinch the example used in[1]: case Tuner t && guitar.isInTune() -> ...; and case Tuner t if guitar.isInTune() -> ...; both seem as clear as case Tuner t when guitar.isInTune()…

they want it to be as ugly as cpp