Count Real Numbers-Map

package com.company;


import java.io.IOException;


import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.util.*;

public class Main {


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        double[] numbers = Arrays.stream(scanner.nextLine()
                .split(" "))
                .mapToDouble(Double::parseDouble)
                .toArray();


        LinkedHashMap<Double, Integer> map = new LinkedHashMap<>();

        for (double number : numbers) {
            if (!map.containsKey(number)) {
                map.put(number, 1);
            } else {
                map.put(number, map.get(number) + 1);
            }
        }
        for (Double key : map.keySet()) {
            System.out.printf("%.1f -> %d%n", key, map.get(key));
        }

    }
}