@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((rank == null) ? 0 : rank.hashCode());
result = prime * result + ((suit == null) ? 0 : suit.hashCode());
return result;
}
@Override
public int hashCode() {
int result = suit.hashCode();
result = 31 * result + rank.hashCode();
return result;
}