Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

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

import java.util.TimeZone;
import javax.xml.datatype.DatatypeConstants;
import javax.xml.datatype.XMLGregorianCalendar;
import javax.xml.datatype.DatatypeFactory;

public class Main {
    /**
     * Convenience method to parse an XML Date Time into a Date. Only useful
     * when the XML Date Time is within the Date object time range.
     *
     * @param toParse
     *            the xml date time string to parse.
     * @return the parsed Date object.
     */
    public static Date getDate(final String toParse) {
        XMLGregorianCalendar calendar = getXMLGregorianCalendar(toParse);
        if (calendar != null) {
            return new Date(calendar.toGregorianCalendar().getTimeInMillis());
        } else {
            return null;
        }
    }

    /**
     * Converts an XMLGregorianCalendar to a Date.
     *
     * @param xmlDate
     *            XMLGregorianCalendar to convert.
     * @return corresponding date object.
     */
    public static Date getDate(final XMLGregorianCalendar xmlDate) {
        // TODO: is this equivalent to getDate(String) processing above??

        // start with UTC, i.e. no daylight savings time.
        TimeZone timezone = TimeZone.getTimeZone("GMT");

        // adjust timezone to match xmldate
        int offsetMinutes = xmlDate.getTimezone();
        if (offsetMinutes != DatatypeConstants.FIELD_UNDEFINED) {
            timezone.setRawOffset(
                    // convert minutes to milliseconds
                    offsetMinutes * 60 // seconds per minute
                            * 1000 // milliseconds per second
            );
        }

        // use calendar so parsed date will be UTC
        Calendar calendar = Calendar.getInstance(timezone);
        calendar.clear();
        calendar.set(xmlDate.getYear(),
                // xmlcalendar is 1 based, calender is 0 based
                xmlDate.getMonth() - 1, xmlDate.getDay(), xmlDate.getHour(), xmlDate.getMinute(),
                xmlDate.getSecond());
        Date date = calendar.getTime();
        int millis = xmlDate.getMillisecond();
        if (millis != DatatypeConstants.FIELD_UNDEFINED) {
            calendar.setTimeInMillis(calendar.getTimeInMillis() + millis);
        }

        return date;
    }

    /**
     * Parse an XML Date Time into an XMLGregorianCalendar.
     *
     * @param toParse
     *            the xml date time string to parse.
     * @return the parsed XMLGregorianCalendar object.
     */
    public static XMLGregorianCalendar getXMLGregorianCalendar(final String toParse) {
        try {
            return DatatypeFactory.newInstance().newXMLGregorianCalendar(toParse);
        } catch (Exception e) {
            return null;
        }
    }
}