Running Java in Visual Studio Code gives error "not a statement"

I’m trying to run Java in visual studio code but it gives me this error, it works in IntelliJ though

EDIT:
Okay turns out I would need to make a Main.class file inside of the same file of the Main.java file, with that now it works properly in vscode. But I saw a friend of mine just making one new .java file and it works directly, how can I make vscode to be like so?

Main.java:

public class Main {
    public static void main(String[] args){
        System.out.println("Hello World");
    }
}

Error:

[Running] cd "/Users/username/Documents/Java Projects/" && javac Main.java && java Main
Main.java:3: error: not a statement
        System
        ^
Main.java:3: error: ';' expected
        System
              ^
2 errors

[Done] exited with code=1 in 0.62 seconds

I tried reinstalling Java in Visual Studio Code to no avail
Update: I think I found the problem: Thing is, I tried out Java first with IntelliJ and before that I’d need to make a Java Project. It works through IntelliJ with that new Project file, when I run said Java program in vscode it works as well, but as soon as I make a new file outside of the project file, or a new file outside of the project folder, it gives out a new error which is this:

Error: Could not find or load main class Main
Caused by: java.lang.ClassNotFoundException: Main