understanding the code

hi,
the code below produces -1 as a result. i would like to understand why and the java concept that is highlighted. i was expecting "999" as a result.
thanks
class Base {    int id = 1000; //Line n1    Base() {        Base(); //Line n2    }    void Base() { //Line n3        System.out.println(++id); //Line n4    } } class Derived extends Base {    int id = 2000; //Line n5    Derived() {} //Line n6    void Base() { //Line n7        System.out.println(--id); //Line n8    } } public class Test {    public static void main(String[] args) {        Base base = new Derived(); //Line n9    } }

You probably think that line n8 refers to Base.id. It doesn't. It refers to Derived.id, which still has the default value of 0 when it is being decremented.

If you remove line n5, the code would print 999.