public class FormatEnd { public String formatEnd(float endStr){ String rubles = ""; int fullPart = (int) endStr; int lastOne = fullPart % 10; int lastTwo = fullPart % 100; if (lastTwo >= 11 && lastTwo <=19){ rubles = "рублей"; } else if(lastOne == 1) { rubles = "рубль"; } else if(lastOne >= 2 && lastOne <= 4){ rubles = "рубля"; } else { rubles = "рублей"; } return String.format("%.2f",endStr) + " " + rubles; } }