public class Formatter { public static String formatPrice(double price) { return String.format("%.2f", price); } public static String rublesDeclension(double value) { long intValue = (long) value; if (intValue % 10 == 1 && intValue % 100 != 11) { return "рубль"; } else if (intValue % 10 >= 2 && intValue % 10 <= 4 && (intValue % 100 < 10 || intValue % 100 >= 20)) { return "рубля"; } else { return "рублей"; } } }