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Anon tries programming in Java (lemmy.world)
submitted 1 day ago by LiamTheBox@lemmy.world to c/greentext@sh.itjust.works
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[-] cows_are_underrated@feddit.org 1 points 26 minutes ago

Trying to print hello world is actually pretty easy

public static void main[Args]{ SystemPrintOutLn("Helli world"); }

That's should be it. But I can devinetively agree. For simple tasks Java is to complex because you need to do to much stuff prior to it. If you have more complex things its actually not that bad since if you have a good polished infrastructure it can be quite good.

[-] Drz@feddit.uk 5 points 15 hours ago

https://bash-org-archive.com/?338364

[-] Batman@lemmy.world 29 points 1 day ago

My inner mathematician respects Java. The first step in any problem is defining your universe

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[-] lurklurk@lemmy.world 27 points 1 day ago

Hello World

30 minutes of boilerplate

writing imports

$ cat <<EOF > Hello.java
public class Hello {
  public static void main(String args[]) {
    System.out.println("Hello world!");
  }
}
EOF
$ java Hello.java
Hello world!

ok

[-] sugar_in_your_tea@sh.itjust.works 18 points 1 day ago* (last edited 1 day ago)

Python:

print("Hello world!")
[-] dch82@lemmy.zip 11 points 23 hours ago* (last edited 23 hours ago)

C:

#include <stdio.h>

int main() {
    printf("Hello World!");
    return(0);
}

EDIT: POSIX-compatible shell:

echo "Hello World!"
[-] derpgon@programming.dev 4 points 12 hours ago

PHP:

Hello World!
[-] PushButton@lemmy.world 2 points 9 hours ago

Rust:

Still fighting the burrito check fil er
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[-] MooseTheDog@lemmy.world 22 points 1 day ago

Welcome to java, we have a couple unconventional ways of doing things, but overall I'm like every other mainstream oo language.

People: AHH! Scary!

Welcome to python. your knowledge of me wont help you elsewhere as my syntax is purposefully obtuse and unique. Forget about semicolons, one missed space and your code is as worthless as you after learning this language.

People: Hello based department

[-] Classy@sh.itjust.works 9 points 1 day ago

Oh my god I got fucked by a python script once because of a single space. It took forever to figure out what went wrong

[-] greenkarmic@lemmy.ca 1 points 48 minutes ago

You can't use Python without a linter. I have everything setup in vscode to use tabs yet copilot autocomplete insists on inserting random spaces everywhere creating indentation errors. The linter is essential to quickly see and fix them.

[-] TonyOstrich@lemmy.world 2 points 14 hours ago* (last edited 14 hours ago)

I refuse to code in Python without a really good IDE and linting like PyCharm. When using PyCharm it's very rare I have issues like this, because it catches them in one way or another, but I notice it catches those kinds of issues a lot when I'm coding soooooooo....

I have also setup the IDE to specifically color code comments like

' # End If and ' # Next

in the same style as their beginning statements as I find it much easier to visually scam through code when they are present.

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[-] JackbyDev@programming.dev 7 points 22 hours ago

This is getting a little better nowadays.

> cat Hello.java
void main() {
    System.out.println("Hello, World!");
}
> java --enable-preview Hello.java
Hello, World!

Things to notice:

  1. No compilation step.
  2. No class declaration.
  3. Main method is not public static
  4. No String[] args.

This still uses preview features though. However, like you demonstrated already, compilation is no longer a required step for simplistic programs like this.

[-] Valmond@lemmy.world 1 points 9 hours ago

System.base.stuff.output.out.printfunctions.println

Or so it felt every time you wanted to dump something into the console...

[-] PanArab@lemm.ee 1 points 14 hours ago* (last edited 14 hours ago)

Main method is not public static

It must be somewhere under the hood. Otherwise, it wont be callable and it would require an instance of an object to call. Unless the object here is the Java environment?

No String[] args

They are just optional I'm sure, like C and C++. You still need them to read command line arguments.

All in all, these syntax improvements are welcome. I already moved on to Kotlin for Android development though.

[-] JackbyDev@programming.dev 1 points 13 hours ago* (last edited 13 hours ago)

Main method is not public static

It must be somewhere under the hood. Otherwise, it wont be callable and it would require an instance of an object to call. Unless the object here is the Java environment?

No. From JEP-445:

If an unnamed class has an instance main method rather than a static main method then launching it is equivalent to the following, which employs the existing anonymous class declaration construct:

new Object() {
    // the unnamed class's body
}.main();

No String[] args

They are just optional I'm sure, like C and C++. You still need them to read command line arguments.

Without the preview feature enabled, it is not an optional part of the method signature. It specifically looks for a main(String[]) signature.

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[-] cashew@lemmy.world 3 points 19 hours ago* (last edited 19 hours ago)

Microsoft Java is a one-liner these days.

> cat program.cs
Console.WriteLine("Hello, World!");
> dotnet run
Hello, World!
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[-] mlg@lemmy.world 15 points 1 day ago

Forgot the JVM eating the entire machine's RAM for breakfast

[-] nova_ad_vitum@lemmy.ca 18 points 23 hours ago

JVM is like a gas. It expands to fit it's container, however large that is.

[-] kerrigan778@lemmy.world 7 points 23 hours ago

Java is terrible and I hated it but I feel like this stuff is not why, this mostly just seems like stuff that most powerful object oriented languages do.

[-] JackbyDev@programming.dev 5 points 22 hours ago

Java is amazing and I love it, and I agree that this is not really a good list of problems. (Not that I expect green texts to be well thought out, rational, real, fair, or anything other than hyperbolic rants lol.) There are good reasons to critique it and the ways people use it, but this isn't it.

Particularly funny is the one about race conditions. That's something you'd have to deal with in any sort of multi threaded environment.

[-] shasta@lemm.ee 1 points 15 hours ago* (last edited 15 hours ago)

Maybe they got confused and assumed it would run on a different cpu? Is there another language that does it that way? No, now I'm confusing myself.

[-] JackbyDev@programming.dev 1 points 12 hours ago

Various languages have various features to make multi threading/concurrent programming easier. Without knowing what language the green text is fanboying for instead of Java it's hard to know what their specific gripe is. Supporting true multi threading out of the box has always been a priority of Java so I don't know what they're complaining about. Generally languages that people praise over Java like Python and JavaScript do not feature true multi threading. (Although Python is getting closer or there now that the GIL is optional.)

[-] yamanii@lemmy.world 8 points 1 day ago

I still think Java is good for teaching newbies precisely because it will throw an error quickly if they are doing it wrong.

[-] DerArzt@lemmy.world 7 points 21 hours ago

Rust over there like

Hey kid, tired of putting off your problems?

[-] kerrigan778@lemmy.world 5 points 23 hours ago

So will so many better languages, more so actually.

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[-] Zementid@feddit.nl 13 points 1 day ago

I really enjoyed the text.

From the perspective of a python programmer it all seems valid.

A Java-Dev would probably write the same about an embedded engineer.

[-] MajorasMaskForever@lemmy.world 6 points 1 day ago

As embedded dev, the stack trace alone scares me. It would be funny to watch the Java runtime blow the 8 frame deep stack on a PIC18 tho

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[-] Malfeasant@lemm.ee 8 points 1 day ago

Must be several years old - otherwise, javafx deserves quite a bit more ire.

[-] AusatKeyboardPremi@lemmy.world 38 points 1 day ago

I might have agreed a decade or two ago, when I knew no better. But today, I find the tribalism surrounding programming languages comical.

I don’t particularly like Java, but I use it because it pays the bills. Similarly, I use C++ (which I prefer) when my work requires it.

[-] SorteKanin@feddit.dk 32 points 1 day ago

I don’t particularly like Java, but I use it because it pays the bills. Similarly, I use C++ (which I prefer) when my work requires it.

I mean, anon is not arguing against that. They're saying the language is shit regardless of how much it is used in business. I don't think they are entirely wrong.

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this post was submitted on 13 Nov 2024
810 points (96.1% liked)

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