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package algs12;
import stdlib.*;
public class XCardSimple implements Comparable<XCardSimple> {
public static enum Rank { TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, TEN, JACK, QUEEN, KING, ACE }
public static enum Suit { CLUBS, DIAMONDS, HEARTS, SPADES }
public final Rank rank;
public final Suit suit;
public XCardSimple (Rank r, Suit s) { this.rank = r; this.suit = s; }
public String toString () { return rank + " of " + suit; }
public int compareTo (XCardSimple that) {
if (this.suit.compareTo (that.suit) < 0) return -1;
if (this.suit.compareTo (that.suit) > 0) return +1;
if (this.rank.compareTo (that.rank) < 0) return -1;
if (this.rank.compareTo (that.rank) > 0) return +1;
return 0;
}
public boolean equals (Object that) {
if (that == null)
return false;
if (this.getClass() != that.getClass())
return false;
// This does the right thing but is inefficient.
// Since equals may be used more than compareTo, there is usually a separate implementation.
return 0 == this.compareTo ((XCardSimple) that);
}
public static void main (String[] args) {
Suit s1 = Suit.CLUBS;
//Suit s2 = new Suit();
XCardSimple c1 = new XCardSimple(Rank.ACE, Suit.SPADES);
XCardSimple c2 = new XCardSimple(Rank.ACE, Suit.SPADES);
StdOut.println (c1 + (c1.equals(c2) ? " equals " : " does not equal ") + c2);
}
}
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