Card in Java

class Card {
		// static values for colors and suits
	final public static int red = 0;
	final public static int black = 1;
	final public static int spade = 0;
	final public static int heart = 1;
	final public static int diamond = 2;
	final public static int club = 3;
		// data fields
	private boolean faceup;
	private int  r;
	private int s;

		// constructor
	Card (int sv, int rv) { s = sv; r = rv; faceup = false; }
		
		// access attributes of card	
	public int	rank() { return r; }

	public int	suit() { return s; }

	public int	color () { 
		if (suit() == heart || suit() == diamond)
			return red;
		return black ; }

	public boolean	faceUp() { return faceup; }
	
		// perform actions
	public void	draw (Graphics g, int x, int y) { 
		... /* omitted */ ... 
		}

	public void	flip() { faceup = ! faceup; }
}

Intro OOP, Chapter 3, Slide 28