corejava

Hi friend,


import java.io.*;
class NumToWords {
private static final String[] maxWords = {
"",
" thousand",
" million",
" billion",
" trillion",
" quadrillion",
" quintillion"
};

private static final String[] tensWords = {
"",
" ten",
" twenty",
" thirty",
" fourty",
" fifty",
" sixty",
" seventy",
" eighty",
" ninety"
};

private static final String[] oneWords = {
"",
" one",
" two",
" three",
" four",
" five",
" six",
" seven",
" eight",
" nine",
" ten",
" eleven",
" twelve",
" thirteen",
" fourteen",
" fifteen",
" sixteen",
" seventeen",
" eighteen",
" nineteen"
};

private String oneThousand(int num) {
String str;

if (num % 100 < 20){
str = oneWords[num % 100];
num /= 100;
}
else {
str = oneWords[num % 10];
num /= 10;

str = tensWords[num % 10] + str;
num /= 10;
}
if (num == 0) return str;
return oneWords[num] + " hundred" + str;
}

public String convert(int num) {
/* special case */
if (num == 0) { return "zero"; }

String preStr = "";

if (num < 0) {
num = -num;
preStr = "negative";
}

String str = "";
int place = 0;

do {
int n = num % 1000;
if (n != 0){
String s = oneThousand(n);
str = s + maxWords[place] + str;
}
place++;
num /= 1000;
} while (num > 0);

return (preStr + str).trim();
}

public static void main(String[] args) throws IOException {

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter the number");
String strNum = br.readLine();

int num = Integer.parseInt(strNum);
NumberToWords ntw = new NumberToWords();
System.out.println("Result is : " + ntw.convert(num));


}
}

For read for more information :

http://www.roseindia.net/java/java-conversion/convert-number-to-words.shtml

Thanks