inheritance problem
i have the following class that creates a deck of cards using linked list and it works fine
import java.util.LinkedList;
import java.util.Random;
public class CardList implements CardListInterface {
private LinkedList<Card> cardlist = new LinkedList<Card>();
private int size = 0;
public CardList() {
}
public void add(Card c) {
cardlist.add(c);
size++;
}
public void add(Card c, int position) {
if (position > size) {
System.out.println("Out of Range of List");
}
else {
cardlist.add(position - 1, c);
size++;
}
}
public void display() {
for (int i = 0; i < size; i++) {
System.out.print(cardlist.get(i) + " ");
}
System.out.println();
}
public Card draw() {
if (size == 0)
return null;
else {
size--;
return cardlist.removeFirst();
}
}
public Card draw(int position) {
if (size == 0)
return null;
else {
size--;
return cardlist.remove(position - 1);
}
}
public int length() {
return size;
}
public Card look(int n) {
if (size == 0)
return null;
else
return cardlist.get(n - 1);
}
public void shuffle() {
Card temp;
Random rand = new Random();
for (int i = 0; i < size; i++) {
temp = cardlist.getFirst();
cardlist.removeFirst();
cardlist.add(rand.nextInt(size - 1), temp);
}
}
now i want to create another class which implements this class and overrides the add() method, so i wrote this class
public class SortedCardList extends CardList {
public SortedCardList() {
}
public void add(Card c) {
if (this.length() == 0)
**this.add(c);
else
System.out.println("blah blah");
}
public static void main(String[] args) {
SortedCardList a = new SortedCardList();
System.out.println(a.length());
a.add(new Card(Card.Rank.Ace, Card.Suit.Hearts));
System.out.println(a.length());
a.display();
a.add(new Card(Card.Rank.Ace, Card.Suit.Hearts));
a.display();
}
}
but it returns a "java.lang.StackOverflowError" when i try to run the add method(i put a couple of asteriks to mark the exact line above")
pls help.
