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Java program to convert numbers to words
import java.text.NumberFormat;
public class NumberToWordsConverter {
public static final String[] units = { "", "One", "Two", "Three", "Four",
"Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve",
"Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen",
"Eighteen", "Nineteen" };
public static final String[] tens = {
"", // 0
"", // 1
"Twenty", // 2
"Thirty", // 3
"Forty", // 4
"Fifty", // 5
"Sixty", // 6
"Seventy", // 7
"Eighty", // 8
"Ninety" // 9
};
public static String convert(final int n) {
if (n < 0) {
return "Minus " + convert(-n);
}
if (n < 20) {
return units[n];
}
if (n < 100) {
return tens[n / 10] + ((n % 10 != 0) ? " " : "") + units[n % 10];
}
if (n < 1000) {
return units[n / 100] + " Hundred" + ((n % 100 != 0) ? " " : "") + convert(n % 100);
}
if (n < 100000) {
return convert(n / 1000) + " Thousand" + ((n % 10000 != 0) ? " " : "") + convert(n % 1000);
}
if (n < 10000000) {
return convert(n / 100000) + " Lakh" + ((n % 100000 != 0) ? " " : "") + convert(n % 100000);
}
return convert(n / 10000000) + " Crore" + ((n % 10000000 != 0) ? " " : "") + convert(n % 10000000);
}
public static void main(final String[] args) {
int n;
n = 5;
System.out.println(NumberFormat.getInstance().format(n) + "='" + convert(n) + "'");
n = 16;
System.out.println(NumberFormat.getInstance().format(n) + "='" + convert(n) + "'");
n = 50;
System.out.println(NumberFormat.getInstance().format(n) + "='" + convert(n) + "'");
n = 78;
System.out.println(NumberFormat.getInstance().format(n) + "='" + convert(n) + "'");
n = 456;
System.out.println(NumberFormat.getInstance().format(n) + "='" + convert(n) + "'");
n = 1000;
System.out.println(NumberFormat.getInstance().format(n) + "='" + convert(n) + "'");
n = 99999;
System.out.println(NumberFormat.getInstance().format(n) + "='" + convert(n) + "'");
n = 199099;
System.out.println(NumberFormat.getInstance().format(n) + "='" + convert(n) + "'");
n = 10005000;
System.out.println(NumberFormat.getInstance().format(n) + "='" + convert(n) + "'");
}
}
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