public class Formatter { String getDeclension(double price) { int resultSumIntDiv10 = ((int) price) % 10; String rub = ""; switch (resultSumIntDiv10) { case 1: rub = "рубль"; break; case 2: case 3: case 4: rub = "рубля"; break; case 5: case 6: case 7: case 8: case 9: case 0: rub = "рублей"; break; } return rub; } }