Infinite recursion in toString cyclic references

class Group {
    String name;
    Member member;
    Group(String n) { this.name = n; }
    @Override public String toString() {
        return name + " (" + member + ")";
    }
}

class Member {
    String name;
    Group group;
    Member(String n) { this.name = n; }
    // Cyclic toString() call!
    @Override public String toString() {
        return name + " in " + group;
    }
}

public class Main {
    public static String formatUserGroup(String name) {
        Group g = new Group("Dev");
        Member m = new Member(name);
        g.member = m;
        m.group = g;
        return m.toString();
    }

    public static void main(String[] args) {
        System.out.println(formatUserGroup("Alice"));
    }
}