print numeric number into words in java

import java.util.*; class Print_Numeric {     public static void main(String args[])     {a         int num;         int a = 1, rev = 0, digit = 0;         Scanner sc = new Scanner(System.in);         num = sc.nextInt();         if (num % 10 == 0)         {             a = num % 10;         }         while (num > 0)         {             digit = num % 10;             rev = rev * 10 + digit;             num = num / 10;         }         while (rev > 0)         {             digit = rev % 10;             switch (digit)             {                 case 0:                     System.out.println("\n Zero");                     break;                 case 1:                     System.out.println("\n One");                     break;                 case 2:                     System.out.println("\n Two");                     break;                 case 3:                     System.out.println("\n Three");                     break;                 case 4:                     System.out.println("\n Four");                     break;                 case 5:                     System.out.println("\n Five");                     break;                 case 6:                     System.out.println("\n Six");                     break;                 case 7:                     System.out.println("\n Seven");                     break;                 case 8:                     System.out.println("\n Eight");                     break;                 case 9:                     System.out.println("\n Nine");                     break;                 default:                     System.out.println(" Enter a Valid Number.. ");             }             rev = rev / 10;         }         if (a == 0)         {             System.out.println("\n Zero");         }     } }

OUTPUT:         345         Three         Four         Five