Program to find whether entered character is a vowel, constant, number or a special character

Here is Program to find whether entered character is a vowel constant number or a special character

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51

import java.io.*;  class stch {  public static void main(String [] args) throws IOException  {   char ch;   DataInputStream din=new DataInputStream(System.in);   System.out.println("Enter the character: ");   ch=(char)(din.read());      switch (ch) {       case 'a':       case 'e':       case 'i':       case 'o':       case 'u':           {            System.out.println("The character character is a Vowel.");            break;           }                 case '0':       case '1':       case '2':       case '3':       case '4':       case '5':       case '6':       case '7':       case '8':       case '9':            {           System.out.println("The character entered is a Number.");           break;          }       case 'v':       case 'n':       case 't':       case 'b':       case 'r':       case 'f':           {            System.out.println("The character entered is a Special Character.");            break;           }       default:           {             System.out.println("The character entered is Constant.");             break;           }      }   } }