I have the following problem. I'm making a simple card game for online play. Here's a outline of my code:

class duuzenden
{
GameStatus game; // contains all the hands, the score, etc
CardPanel myhandpanel,hishandpanel;
main{
myhandpanel = new CardPanel (spel.myhand);
hishandpanel = new CardPanel (spel.hishand);
}

void submit ()
// send Main.game

void receive ()
// receive a game and put it into Main.game
}

class GameStatus
{
Hand myhand, hishand, etc..
}

class CardPanel extends JPanel
{
Hand h;
CardPanel(Hand h)
this.h = h;

paintComponent(Graphics g)
g.draw(h);
}

The problem now is that the information about the cards I have is stored in two places (Main.game.myhand and myhandpanel.h). When the cards change, I have to change them in two places: in Main.game.myhand to send Main.game to the other player, and in myhandpanel.h for correct display. How can I remove this redundency?

I'd rather give the CardPanel some kind of reference to the Main.myhand and Main.hishand, so that it'd look like

class CardPanel extends JPanel
{
Hand *h;
CardPanel(*Hand h)
this.h = h;

paintComponent(Graphics g)
g.draw(&h);
}

so that each instance of the CardPanel class still manipulates the objects in Main.game.

Thanks for your help!

Ciro.