Hello world works but then gets error that there's no main?

Question

I have the following simple hello world in Java:

class A {
    static {
        System.out.println(\"Hello world\");
    }
}

It works as ex

Answer 1

Forget the static block, and do it like this:

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