public class rubWord { public static String rubWord(double payInput) { String payOutput; int payInputNorm = (int) payInput; String payString = Integer.toString(payInputNorm); char endOfPayment = payString.charAt(payString.length() - 1); switch (Character.toString(endOfPayment)) { case "1": payOutput = " рубль."; break; case "2": case "3": case "4": payOutput = " рубля."; break; default: payOutput = " рублей."; break; } return payOutput; } }