Java Hour Format formatDateString2(String str

Description

format Date String

License

Apache License

Declaration

public static String formatDateString2(String str_date) throws ParseException

Method Source Code

//package com.java2s;
/*/* www .j  a v a2s  .  c o  m*/
 * Copyright 2013, The Sporting Exchange Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

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

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    public static String formatDateString2(String str_date) throws ParseException {

        String[] patterns = new String[6];
        Pattern p0;
        Pattern p1;
        Pattern p2;
        Pattern p3;
        Pattern p4;
        Pattern p5;

        /* dd/mm/yy hh:mm:ss.S */
        patterns[0] = "(0[1-9]|[12][0-9]|3[01])/(0[1-9]|1[012])/((\\d\\d)|((19|20)\\d\\d))\\s([1-9]|([01][0-9])|(2[1-3])):((0[0-9])|([12345][0-9])):((0[0-9])|([12345][0-9])).[0-9]*";
        /* dd/mm/yy hh:mm:ss */
        patterns[1] = "(0[1-9]|[12][0-9]|3[01])/(0[1-9]|1[012])/((\\d\\d)|((19|20)\\d\\d))\\s([1-9]|([01][0-9])|(2[1-3])):((0[0-9])|([12345][0-9])):((0[0-9])|([12345][0-9]))";
        /* dd/mm/yy hh:mm */
        patterns[2] = "(0[1-9]|[12][0-9]|3[01])/(0[1-9]|1[012])/((\\d\\d)|((19|20)\\d\\d))\\s([1-9]|([01][0-9])|(2[1-3])):((0[0-9])|([12345][0-9]))";
        /* dd/mm/yy */
        patterns[3] = "(0[1-9]|[12][0-9]|3[01])/(0[1-9]|1[012])/((\\d\\d)|((19|20)\\d\\d))";
        /* yyyy-mm-dd hh:mm:ss.S */
        patterns[4] = "((\\d\\d)|((19|20)\\d\\d))-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])\\s([1-9]|([01][0-9])|(2[0-3])):((0[0-9])|([12345][0-9])):((0[0-9])|([12345][0-9])).[0-9]*";
        /* yyyymmddhhmmss */
        patterns[5] = "((\\d\\d)|((19|20)\\d\\d))(0[1-9]|1[012])(0[1-9]|[12][0-9]|3[01])([1-9]|([01][0-9])|(2[0-3]))((0[0-9])|([12345][0-9]))((0[0-9])|([12345][0-9]))";

        p0 = Pattern.compile(patterns[0]);
        p1 = Pattern.compile(patterns[1]);
        p2 = Pattern.compile(patterns[2]);
        p3 = Pattern.compile(patterns[3]);
        p4 = Pattern.compile(patterns[4]);
        p5 = Pattern.compile(patterns[5]);

        /* Set up array containing the supported date patterns */

        Matcher m;
        boolean b;
        int dateType = 0;

        m = p0.matcher(str_date);
        b = m.matches();
        if (b) {
            dateType = 1;
        }

        m = p1.matcher(str_date);
        b = m.matches();
        if (b) {
            dateType = 2;
        }

        m = p2.matcher(str_date);
        b = m.matches();
        if (b) {
            dateType = 3;
        }

        m = p3.matcher(str_date);
        b = m.matches();
        if (b) {
            dateType = 4;
        }

        m = p4.matcher(str_date);
        b = m.matches();
        if (b) {
            dateType = 5;
        }

        m = p5.matcher(str_date);
        b = m.matches();
        if (b) {
            dateType = 6;
        }

        SimpleDateFormat requiredFormat = new SimpleDateFormat("dd/mm/yyyy hh:mm:ss.S");
        SimpleDateFormat currentFormat;
        Date passedDate;
        switch (dateType) {
        case 1:
            currentFormat = new SimpleDateFormat("dd/mm/yy hh:mm:ss.S");
            passedDate = currentFormat.parse(str_date);
            str_date = requiredFormat.format(passedDate);
            break;
        case 2:
            currentFormat = new SimpleDateFormat("dd/mm/yy hh:mm:ss");
            passedDate = currentFormat.parse(str_date);
            str_date = requiredFormat.format(passedDate);
            break;
        case 3:
            currentFormat = new SimpleDateFormat("dd/mm/yy hh:mm");
            passedDate = currentFormat.parse(str_date);
            str_date = requiredFormat.format(passedDate);
            break;
        case 4:
            currentFormat = new SimpleDateFormat("dd/mm/yy");
            passedDate = currentFormat.parse(str_date);
            str_date = requiredFormat.format(passedDate);
            break;
        case 5:
            /* Reformat */
            String datePortion = str_date.split(" ")[0];
            String timePortion = str_date.split(" ")[1];

            String yearString = datePortion.split("-")[0].substring(0, 4);
            String monthString = datePortion.split("-")[1];
            String dayString = datePortion.split("-")[2];

            str_date = dayString + "/" + monthString + "/" + yearString + " " + timePortion;
            break;
        case 6:
            /* need to return dd/mm/yy hh:mm:ss.S  from yyyymmddhhmmss */
            String year = str_date.substring(0, 4);
            String month = str_date.substring(4, 6);
            String day = str_date.substring(6, 8);
            String hour = str_date.substring(8, 10);
            String minute = str_date.substring(10, 12);
            String second = str_date.substring(12, 14);

            str_date = day + "/" + month + "/" + year + " " + hour + ":" + minute + ":" + second + ".0";
            break;
        default:
            /* Do nothing, string is not recognised as a Time/Date string */
            break;
        }

        return str_date;

    }
}

Java Hour Format formatDateString2(String str_date)

Description

License

Declaration

Method Source Code

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