Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 Copyright: 2015 Gholamreza Sabery Tabrizy
    
 This file is part of Tabdilak.
    
 Tabdilak is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
    
 Tabdilak is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
    
 You should have received a copy of the GNU General Public License
 along with Tabdilak.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.util.HashMap;

public class Main {
    private static final HashMap<Character, Character> PERSIAN_TO_ENGLISH = new HashMap<Character, Character>();

    public static String convertPersianNumeralToEnglish(String number) {
        if (number == null || number.length() == 0)
            throw new IllegalArgumentException("Provided argument is null!");
        if (!isPersianNumberLegal(number))
            throw new IllegalArgumentException("String must only contain Persian numerals");
        String result = "";
        for (int i = 0; i < number.length(); i++)
            result += PERSIAN_TO_ENGLISH.get(number.charAt(i));
        return result;
    }

    private static boolean isPersianNumberLegal(String number) {
        for (int i = 0; i < number.length(); i++)
            if (!PERSIAN_TO_ENGLISH.containsKey(number.charAt(i)))
                return false;
        return true;

    }
}