Parse input date string as XMLGregorianCalendar . - Java java.util

Java examples for java.util:Date Parse

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Description

Parse input date string as XMLGregorianCalendar .

Demo Code


//package com.java2s;
import javax.xml.datatype.DatatypeConfigurationException;
import javax.xml.datatype.DatatypeConstants;
import javax.xml.datatype.DatatypeFactory;
import javax.xml.datatype.XMLGregorianCalendar;

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

public class Main {
    public static void main(String[] argv) throws Exception {
        String dateStr = "java2s.com";
        String format = "java2s.com";
        System.out.println(parseAsXmlDateWithoutTimezone(dateStr, format));
    }/*from   w  w w .  ja v a 2 s.  c o  m*/

    /**
     * Parse input date string as {@link XMLGregorianCalendar}. We want, that
     * method {@link XMLGregorianCalendar#toXMLFormat} produce date format
     * 'yyyy-MM-dd'.
     *
     * @param dateStr
     *            string representing date
     * @param format
     *            format of the input string
     * @return representation of the date (no time set)
     * @throws ParseException
     *             if not possible to parse the input string wwith the given
     *             format
     * @see #convert2XmlDateWithoutTimezone
     */
    public static XMLGregorianCalendar parseAsXmlDateWithoutTimezone(
            String dateStr, String format) throws ParseException {
        if (dateStr == null || dateStr.length() < 1) {
            throw new IllegalArgumentException(
                    "Argument 'String dateStr' is null or empty string!");
        }

        if (format == null || format.length() < 1) {
            throw new IllegalArgumentException(
                    "Argument 'String format' is null or empty string!");
        }

        SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
        simpleDateFormat.setLenient(false);
        Date date = simpleDateFormat.parse(dateStr);
        return convert2XmlDateWithoutTimezone(date);
    }

    /**
     * Convert Date into XMLGregorianCalendar. We want, that method
     * {@link XMLGregorianCalendar#toXMLFormat} produce date format
     * 'yyyy-MM-dd'. To accomplish this, it is necessery to set TimeZone value
     * of the {@link XMLGregorianCalendar} to
     * {@link DatatypeConstants#FIELD_UNDEFINED} If TimeZone would be set to 0,
     * output would be yyyy-MM-ddZ, which is also correct but more applications
     * outside will be able process the first format.
     *
     * @param date
     *            the date
     * @return representation of the date (no time set)
     */
    public static XMLGregorianCalendar convert2XmlDateWithoutTimezone(
            Date date) {
        if (date == null) {
            throw new IllegalArgumentException(
                    "Argument 'Date date' is null!");
        }

        GregorianCalendar utilGregorianCalendar = new GregorianCalendar();
        utilGregorianCalendar.setTimeInMillis(date.getTime());
        try {
            return DatatypeFactory.newInstance()
                    .newXMLGregorianCalendarDate(
                            utilGregorianCalendar.get(Calendar.YEAR),
                            utilGregorianCalendar.get(Calendar.MONTH) + 1,
                            utilGregorianCalendar
                                    .get(Calendar.DAY_OF_MONTH),
                            DatatypeConstants.FIELD_UNDEFINED);
        } catch (DatatypeConfigurationException e) {
            throw new RuntimeException(e);
        }
    }
}

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