Challenge 2: A Mismatched Filename and Class Name — Possible Solution
====================================================================

Wrong.java:

public class Right {
    public static void main(String[] args) {
        System.out.println("This won't compile.");
    }
}

$ javac Wrong.java

Representative compile error:

    Wrong.java:1: error: class Right is public, should be declared in a
    file named Right.java
    public class Right {
           ^
    1 error

WHY THIS WORKS AS AN ANSWER
------------------------------
javac itself rejects the file before ever reaching main's own body --
the error names the exact mismatch (a public class named Right sitting
in a file named Wrong.java) and states plainly what filename would fix
it, confirming the chapter's own claim that this rule is enforced by
the compiler directly, not a style convention a team could choose to
ignore.