why does this java string not cause an compiler error?

Question

I was trying to use unicode to insert quotes around the "world" in a java hello world program. I forgot to save it and it just worked anyway. I'm just super confused about this.

I use a MacBook Pro with macOS Ventura 13.2.1, and openJDK 19.0.1.

This is the code that I ran.

public class Main {
    public static void main(String[] args) {
        System.out.println("Hello, \u0022 + "world!");
    }
}