Wikipedia:Reference desk/Archives/Computing/2022 February 7

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February 7

In JAVA, is it possible to write all types of codes in main method?

I want to write all types of codes in main method, so that no need to instantiate the class or without having to instantiate an object.

public class Main { 
public static void main(String[] args) { 
int x = 5; 
System.out.println(x); 
} 
}

I don't want to use below code to show same output:

public class Main { 
int x = 5;

public static void main(String[] args) { 
Main myObj = new Main(); 
System.out.println(myObj.x); 
} 
}

Rizosome (talk) 06:10, 7 February 2022 (UTC)

Yes, this is entirely possible. main() can have local variables just like any other method. JIP | Talk 09:48, 7 February 2022 (UTC)

I understand very well. Rizosome (talk) 07:35, 8 February 2022 (UTC)

Resolved

But you still haven't learned how to say "Thank you." MinorProphet (talk) 22:31, 11 February 2022 (UTC)

Unresolved

Unzipping files

How do I unzip a file without the use of 3rd party websites? I've heard it's really easy but I'm just missing a key point. Hpnzii (talk) 16:04, 7 February 2022 (UTC)

@Hpnzii: Depends on what OS you're using. If you're on Windows you can do it through the file explorer (Can't provide the exact steps to do so right now as I don't have access to my Windows PC) as long as it's a file in the .zip format. I can't say the same for other OSes though since I've only ever used Windows and Chrome OS (never really encountered .zip files on Chrome OS so I don't know how it works there). ― Blaze Wolf^Talk_{Blaze Wolf#6545} 16:09, 7 February 2022 (UTC)

On Windows 10, in file explorer, right-click on the file. One of the menu options is "Extract all...", which then asks you where to put the files — GhostInTheMachine ^{talk to me} 16:16, 7 February 2022 (UTC)

You download and install one of the many file archivers. (By the way, thank you for letting me know that online decompression is a thing, as you may coincidentally just have solved my problem.)  Card Zero  (talk) 14:00, 9 February 2022 (UTC)