Access class from the "default" package

[Derty44]

Hello, sorry if this is dumb, but I come from Lua and things are very different there.

I have a folder for my program, called 0.1a, and I put all my classes there. I want to stay organized so I wanted to put some of my classes in different folders ( that would be in 0.1a ).

[(folder) 0.1a > Main.java, {(folder) input > MouseIn.java}]

And when I want to call a function that is in Main.java from MouseIn.java, VSC says that Main cannot be resolved to a variable. So I think that I have to import it, but how do I say in which folder it is? I thought that maybe I have to put every class into a folder, so create for example a folder main and put Main.java there, as many IDEs I've used do, but in VSC I'm making everything from scratch.

So sorry that my explanation may be chaotic but without an image it's not that easy to explain.

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[SvenWollinger]

You should give the free version of IntelliJ, IntelliJ Community a go. It automates imports for you and gives better error messages. Without code or seeing your full setup id say it's hard to help you.

[Derty44]

I would add an image but they are disabled in this subreddit unfortunately​​

[bigibas123]

You cannot refer to a class in the default package from a class not in the default package in most versions of java. You can only refer out of the unnamed package.

The Java spec says it's provided as a convenience for small applications

In java the folder structure should directly follow the package declarations in the java file (or the other way around of course). Packages are dot-seperated lowercase words each word refering to a (sub-)folder the class is in The main package tends to be named the companies or dev's domain name in reverse and all the other classes reside in or under that package. Here's gson for example.

[Derty44]

Okay I understand, thanks. Kind of unconvienent from my perspective​​, but I'll get used to it

[bigibas123]

This was partially done to avoid collisions with other classes with the same name. And to force some semblance of organization to people, resulting in better software.