Number to word convertor in java

How to convert a numeric value into English words in java

Source code

import java.util.Scanner;

/**
 * Number to word convertor
 */

/**
 * @author consfedkozhikode@gmail.com
 *
 */
public class NumberToWord {
   
    private String[] ones = {"","one","two","three","four","five","six","seven","eight","nine","ten"};
    private String[] twenties = {"","one","two","three","four","five","six","seven","eight","nine","ten","eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen","eighteen","nineteen","twenty"};
    private String[] tens = {"","ten","twenty","thirty","fourty","fifty","sixty","seventy","eighty","ninety"};
    private String[] hundreds = {"ones","tens","hundred","thousand","thousand","lakhs","lakhs","crore","crore"};
    private String word = "";
    private String tempWord = null;
    private int lastDigit = 0;
    /**
     * @param args
     */
    public static void main(String[] args) {
        NumberToWord numberToWord = new NumberToWord();
        int number = 0;
        Scanner input = new Scanner(System.in);
        System.out.println(" Enter the number : ");
        number = input.nextInt();
        int output = numberToWord.convertToWord(number,0);
    }

    private int convertToWord(int number,int count) {
                int quotient = number/10;
                int reminder = number % 10;
                getTheWord(reminder,count);
                if(quotient<=0){
                    word = tempWord + word;
                    System.out.println(" output : "+word);
                    return 0;
                }else
                {
                    return convertToWord(quotient,count+1);
                }
    }

    private void getTheWord(int reminder,int placeValue) {
        String newWord = null;
        switch (placeValue) {
       
        case 0:
            newWord = " "+ones[reminder];
            break;
        case 1:
            if(reminder==1){
                word = word; //skip
                int number = Integer.parseInt(String.valueOf(reminder+""+lastDigit));
                newWord = " "+twenties[number];
            }else{
                word = tempWord + word;
                newWord = " "+tens[reminder];
            }
            break;
        case 2:
            word = tempWord + word; // adding tens
            newWord = " "+ones[reminder]+" "+hundreds[placeValue]+" and";
            break;
        case 3:
            word = tempWord + word; //adding hundred
            newWord = " "+ones[reminder]+" "+hundreds[placeValue];
            break;
        case 4:
            if(reminder==1){
                word = word;
                int number = Integer.parseInt(String.valueOf(reminder+""+lastDigit));
                newWord = ""+twenties[number]+" "+hundreds[placeValue]+"";
            }else{
                word = tempWord + word;
                newWord = " "+tens[reminder]+"";
            }
            break;

        default:
            System.out.println(" This is default statement, it won't print ");
            break;
        }
        lastDigit = reminder;
        tempWord = newWord;
    }

}

Output

Number to english word in java

Description

Number to word converter java program converts numeric value into words,  currently the program will convert up to thousands. The same logic is applied for lakhs and crores so you can extend the project, only thing you have to do is to increase case statement in switch (repeating case 3 and case 4).
       In this program I pass the user inputted number to recursive function convertToWord(), A recursive function is a function that call itself. convertToWord() function will find the quotient and reminder of the number in each calls, the reminder is send getTheWord() function where a switch case will convert the number into corresponding words.

Most useful code

Java reference ( Buy a copy )

Similar posts

Finding HCF and LCM

Finding Factorial using recursion

Fibonacci series

Binary search in java

Palindrome in java

Geometric mean using java 

Prime number in java

Print triangle in java

Find missing number in java

author : +belazy

Ever tried to develop a tic toc toe game, you can try our code, multiplayer and with computer the whole source code will be available soon, stay update

http://javabelazy.blogspot.in/