How to copy a future object in java ???

Question

here is a part of class Hand for a blackjack game.
I want to make a copy of a future Hand object using constructor copyHand(),
I dont know how ????????
I appreciate anyones help .....
// the array of cards in the hand
    Card [] cards;
     * Builds a Hand with 0 cards in it, but capable of holding
     * max cards.
    public Hand(int max)
        cards = new Card[max];
     * Builds a copy of this Hand.
     * @return a deep copy of this Hand.
    public Hand copyHand()
    }-med

Answer 1

Assuming that you DO want a deep copy, begin with a constructor that takes another hand.
public Hand( Hand h ) { ...Then for each instance variable, within that constructor:
this.instVar0 = h.instVar0;
this.instVar1 = h.instVar1;
. . .And last, for every reference, make sure there is a constructor (or copy method for arrays) that itself makes a deep copy:
this.ref0 = new Ref0Type( h.ref0 );