com.jcalvopinam.utils.Utilities.java Source code

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Here is the source code for com.jcalvopinam.utils.Utilities.java

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/*
 * MIT License
 *
 * Copyright (c) 2017 JUAN CALVOPINA M
 *
 * 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 NONINFRINGEMENT. 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.
 *
 */

package com.jcalvopinam.utils;

import org.apache.commons.lang.StringUtils;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;

/**
 * @author juanca <juan.calvopina+dev@gmail.com>
 */
public class Utilities {

    public static final String DATE_FORMAT = "yyyy-MM-dd";
    private static final String DATE_MATCH_FORMAT = "\\d{4}-\\d{2}-\\d{2}";

    /**
     * If the input parameter is integer, then converts the String input to Integer output else return null
     *
     * @param input
     * @return
     */
    public static Integer isInteger(String input) {
        Integer output = 0;
        if (StringUtils.isNumeric(input)) {
            output = Integer.parseInt(input);
        }
        return output;
    }

    /**
     * Convert date from String to Date object
     *
     * @param date
     * @return
     * @throws Exception
     */
    public static Date matchDate(String date) {
        try {
            if (hasFormat(date)) {
                DateFormat formatter = new SimpleDateFormat(DATE_FORMAT);
                return formatter.parse(date);
            }
        } catch (ParseException pe) {
            pe.printStackTrace();
        }
        return null;
    }

    /**
     * Check if the string has a Date format
     *
     * @param date
     * @return
     */
    private static boolean hasFormat(String date) {
        return date.matches(DATE_MATCH_FORMAT);
    }

    /**
     * Gets random user names
     *
     * @return
     */
    public static String getRandomUsers() {
        final String words = "Andrea:Juan:Isaac:Sandra:Michael:Annabel";
        String[] wordsAsArray = words.split(":");
        int index = new Random().nextInt(wordsAsArray.length);

        return wordsAsArray[index];
    }

}