Metric Converter

import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.Scanner;


public class UnitMeasureConverter {
    public static void main(String[] args) {
        Locale.setDefault(new Locale("us", "Us"));
        Scanner console = new Scanner(System.in);
        Map<String, Double> map1map = new HashMap<String, Double>();
        map1map.put("m", 1d);
        map1map.put("mm", 1000d);
        map1map.put("cm", 100d);
        map1map.put("in", 39.3700787d);
        map1map.put("km", 0.001d);
        map1map.put("ft", 3.2808399d);
        map1map.put("yd", 1.0936133d);
        map1map.put("mi", 0.000621371192d);

        Double input = Double.parseDouble(console.nextLine());
        String firstType = console.nextLine();
        String secondType = console.nextLine();

        Double value1 = map1map.get(firstType);
        Double value2 = map1map.get(secondType);
        Double result = (input / value1)  *  value2;

        System.out.printf("%.8f " + secondType, result);
    }
}