Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * The MIT License (MIT)
 * Copyright (C) 2016 DCODE TECHNOLOGIES LTD
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
 * and associated documentation files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
 * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

import java.text.ParseException;
import java.text.SimpleDateFormat;

import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

public class Main {
    private static SimpleDateFormat simpleDateFormat = new SimpleDateFormat("MM/yyyy", Locale.getDefault());

    public static String formatExpirationDate(String text) {

        try {
            switch (text.length()) {
            case 1:
                int digit = Integer.parseInt(text);

                if (digit < 2) {
                    return text;
                } else {
                    return "0" + text + "/";
                }
            case 2:
                int month = Integer.parseInt(text);
                if (month > 12 || month < 1) {
                    // Invalid digit
                    return text.substring(0, 1);
                } else {
                    return text + "/";
                }
            case 3:
                if (text.substring(2, 3).equalsIgnoreCase("/")) {
                    return text;
                } else {
                    text = text.substring(0, 2) + "/" + text.substring(2, 3);
                }
            case 4:
                Calendar now = getCurrentExpDate();
                String year = String.valueOf(now.get(Calendar.YEAR));
                int yearDigit = Integer.parseInt(text.substring(3, 4));
                int currentYearDigit = Integer.parseInt(year.substring(2, 3));
                if (yearDigit < currentYearDigit) {
                    // Less than current year invalid
                    return text.substring(0, 3);
                } else {
                    return text;
                }
            case 5:
                Calendar now2 = getCurrentExpDate();
                String currentYearStr2 = String.valueOf(now2.get(Calendar.YEAR));
                String yearStr = text.substring(0, 3) + currentYearStr2.substring(0, 2) + text.substring(3, 5);
                Date expiry = simpleDateFormat.parse(yearStr);
                if (expiry.before(now2.getTime())) {
                    // Invalid exp date
                    return text.substring(0, 4);
                } else {
                    return text;
                }
            default:
                if (text.length() > 5) {
                    return text.substring(0, 5);
                } else {
                    return text;
                }
            }

        } catch (ParseException e) {
            e.printStackTrace();
        }
        // If an exception is thrown we clear out the text
        return "";
    }

    private static Calendar getCurrentExpDate() {
        Calendar now = Calendar.getInstance();
        now.set(now.get(Calendar.YEAR), now.get(Calendar.MONTH), 0, 0, 0);
        return now;
    }
}