Java Card Frequencies

import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Scanner;

public class CardFrequences {

    public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    String[] cards = scanner.nextLine().split("[ ♥♣♦♠]+");
    Map<String, Integer> cardsMap = new LinkedHashMap<String, Integer>();
    for (String card : cards) {
        Integer count = cardsMap.get(card);
        if (count == null) {
        count = 0;
        }
        cardsMap.put(card, count + 1);
    }
    for (Map.Entry<String, Integer> entry : cardsMap.entrySet()) {
        double precentage = (double) entry.getValue() * 100 / cards.length;
        System.out.printf("%s -> %.2f%%\n", entry.getKey(), precentage);
    }
    }

}