Main.java

class A {
    static final String name = "A";
    
    static final B b = new B();
    
    A () {
        System.out.println(name + " is loading...");
    }
}


class B {
    static final String name = "B";
    
    static final C c = new C();
    
    B () {
        System.out.println(name + " is loading...");
    }
}

class C {
    static final String name = "C";
    
    static final A a = new A();
    
    C () {
        System.out.println(name + " is loading...");
    }
}

public class Main {
    
    public static void main(String[] args) {
        A a = new A();
        System.out.println("-----");
        B b = new B();
        System.out.println("-----");
        C c = new C();
    }
}

A is loading...
C is loading...
B is loading...
A is loading...
/----
B is loading...
/----
C is loading...