public class Convert { static String convertRub(double result) { String rub="рубл"; if ( result>=11 && result<=14) { rub += "ей"; }else { result %= 10; if (result == 1) { rub += "ь"; } else if (result >= 2 && result<= 4) { rub += "я"; } else { rub += "ей"; } } return rub; } }