Awesome code by VASU to convert Number into Words

This code is implemented and provided by Vasu, from MAIT, Delhi.

About this code : By using this code we can translate a number into a word.

For example 1 will become one

and 120 will become  1 hundred twenty 

Note : This code is based on recursion. 

I will post a non recursive approach to do the same thing very soon.

Till then enjoy this code.

Note : Before using this code please create a java project in eclipse and save the 

code inside Conversion.java file inside src folder  

import java.util.Scanner;

// Create a class consisting of main method and a calculate function

public class Conversion {

// Array of numbers for units place

static String[] unit = {"" , "one" , "two" , "three" , "four" , "five" , "six" , "seven" , 

                                       "eight" , "nine" , "ten" , "eleven" , "twelve" , "thirteen" , 

                                       "fourteen" , "fifteen" , "sixteen" , "seventeen" ,

                                       "eighteen","nineteen"} ;

// Array of numbers for tens place

static String[] tens = {"" , "ten" , "twenty" , "thirty" , "forty" , "fifty", "sixty" , 

                                        "seventy" ,"eighty" , "ninety" } ;

public static void main(String[] args) {

// Create object of Scanner Class

Scanner sc = new Scanner(System.in) ;

// Get Input From User

System.out.print("Enter the number : ");

int number = sc.nextInt() ;

// Show the Output to the user

System.out.println("Number in words : " + calculate(number)); 

}

public static String calculate(int n) {

// Create some cases to define range of the input number

if(n < 20) {

// Directly return the string corresponding to the number

return unit[n];  

}

else if(n < 100) {

return tens[n/10] + " " + unit[n%10];

}

                else if(n < 1000) {

// Apply recursion by converting the sub integer to actual integer

return unit[n/100] + " hundred " + calculate(n%100);  

}

                else if(n < 100000) {

// For numbers in thousands

return calculate(n/1000) + " thousand " + calculate(n%1000) ;  

}

                else if(n < 10000000) {

// For number in lakhs 

return calculate(n/100000) + " lakhs " + calculate(n%100000) ; 

}

                 else if(n < 1000000000) {

// For number in crore 

return calculate(n/10000000) + " crore " + calculate(n%10000000) ; 

}

               else {

return "Number Not In The Range ! Please Try Again" ;

}

}

}