public class Formatter { double price; String messageTemlate = "%.2f %s"; Formatter(double price){ this.price = price; } double roundUpPrice() { return Math.floor(price); } String formatOut() { double price = roundUpPrice(); if(price == 1) { return String.format(messageTemlate, this.price , "рубль"); } else if ((price > 1) && (price <= 4) ) { return String.format(messageTemlate, this.price , "рубля"); } else { return String.format(messageTemlate, this.price , "рублей"); } } }