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Comment on Anon tries programming in Java

JackbyDev@programming.dev ⁨5⁩ ⁨weeks⁩ 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:

No compilation step.
No class declaration.
Main method is not public static
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.

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cashew@lemmy.world ⁨5⁩ ⁨weeks⁩ ago
Microsoft Java is a one-liner these days.

$ cat program.cs Console.WriteLine("Hello, World!"); $ dotnet run Hello, World!
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- JackbyDev@programming.dev ⁨5⁩ ⁨weeks⁩ ago
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Valmond@lemmy.world ⁨5⁩ ⁨weeks⁩ ago
System.base.stuff.output.out.printfunctions.println

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

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PanArab@lemm.ee ⁨5⁩ ⁨weeks⁩ 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.

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