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Java Utils collections, development by Nervousync Studio (NSYC)
/*
* Licensed to the Nervousync Studio (NSYC) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package com.nervousync.utils;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
import com.nervousync.commons.core.Globals;
/**
* Date time utils
*
* @author Steven Wee [email protected]
* @version $Revision: 1.0 $ $Date: Jan 13, 2010 11:15:20 AM $
*/
public final class DateTimeUtils {
public static final String DEFAULT_DATE_PATTERN = "yyyy/MM/dd";
public static final String DEFAULT_DATETIME_PATTERN_ISO8601 = "yyyy-MM-dd'T'HH:mm:ss";
public static final String COOKIE_DATETIME_PATTERN = "EEE, dd-MMM-yyyy HH:mm:ss 'GMT'";
private DateTimeUtils() {
}
/**
* Formats given date according to string with ISO8601 format
* @param date
* @return
*/
public static String formatDateForSitemap(Date date) {
if (date == null) {
return null;
}
return formatDate(date, DEFAULT_DATETIME_PATTERN_ISO8601 + DateTimeUtils.getTimeZone());
}
/**
* Parses given string according to java.util.Date with ISO8601 format
* @param string
* @param format
* @return
* @throws ParseException
*/
public static Date parseSitemapDate(String string) throws ParseException {
return parseDate(string, DEFAULT_DATETIME_PATTERN_ISO8601 + DateTimeUtils.getTimeZone());
}
/**
* Formats given date according to string with vCard format
* @param date
* @return
*/
public static String formatDateForVCard(Date date) {
if (date == null) {
return null;
}
return formatDate(date, DEFAULT_DATETIME_PATTERN_ISO8601) + "Z";
}
/**
* Parses given cookie expire string according to java.util.Date
* @param string
* @return
* @throws ParseException
*/
public static Date parseGMTDate(String string) throws ParseException {
return parseDate(string, COOKIE_DATETIME_PATTERN);
}
/**
* Parses given string according to format style
* @param string
* @param format
* @return
* @throws ParseException
*/
public static Date parseDate(String string, String format) throws ParseException {
if (string == null || string.length() == 0) {
throw new ParseException("Date string is null", 0);
}
if (format == null) {
format = DEFAULT_DATE_PATTERN;
}
Date date = new SimpleDateFormat(format).parse(string);
return date;
}
/**
* Formats given date according to system style
* @param date
* @return
*/
public static String formatDate(Date date) {
return formatDate(date, "");
}
/**
* Return current day value with format "yyyyMMdd"
* @return
*/
public static int currentDay() {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMdd");
return Integer.valueOf(simpleDateFormat.format(new Date())).intValue();
}
/**
* Return current GMT day value with format "yyyyMMdd"
* @return
*/
public static int currentGMTDay() {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMdd");
simpleDateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
return Integer.valueOf(simpleDateFormat.format(new Date())).intValue();
}
/**
* Return expire day value with format "yyyyMMdd"
* @param expireTime expire time
* @return
*/
public static int expireDay(long expireTime) {
long expireDate = System.currentTimeMillis() + expireTime;
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMdd");
return Integer.valueOf(simpleDateFormat.format(new Date(expireDate))).intValue();
}
/**
* Return expire day value with format "yyyyMMdd"
* @param expireTime expire time
* @return
*/
public static int expireGMTDay(long expireTime) {
long expireDate = DateTimeUtils.currentGMTTimeMillis() + expireTime;
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMdd");
return Integer.valueOf(simpleDateFormat.format(new Date(expireDate))).intValue();
}
/**
* Converts input time from Java to DOS format
* @param time
* @return time in DOS format
*/
public static long toDosTime(long time) {
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(time);
int year = cal.get(Calendar.YEAR);
if (year < 1980) {
return (1 << 21) | (1 << 16);
}
return (year - 1980) << 25 | (cal.get(Calendar.MONTH) + 1) << 21 |
cal.get(Calendar.DATE) << 16 | cal.get(Calendar.HOUR_OF_DAY) << 11 | cal.get(Calendar.MINUTE) << 5 |
cal.get(Calendar.SECOND) >> 1;
}
/**
* Converts time in dos format to Java format
* @param dosTime
* @return time in java format
*/
public static long dosToJavaTme(int dosTime) {
int sec = 2 * (dosTime & 0x1f);
int min = (dosTime >> 5) & 0x3f;
int hrs = (dosTime >> 11) & 0x1f;
int day = (dosTime >> 16) & 0x1f;
int mon = ((dosTime >> 21) & 0xf) - 1;
int year = ((dosTime >> 25) & 0x7f) + 1980;
Calendar cal = Calendar.getInstance();
cal.set(year, mon, day, hrs, min, sec);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime().getTime();
}
/**
* Return current time value with format "yyyyMMddHHmm"
* @return
*/
public static long currentTime() {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmm");
return Long.valueOf(simpleDateFormat.format(new Date())).longValue();
}
/**
* Return current time in milliseconds.
* @return
*/
public static long currentTimeMillis() {
return System.currentTimeMillis();
}
/**
* Return current GMT time value with format "yyyyMMddHHmm"
* @return
*/
public static long currentGMTTime() {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmm");
simpleDateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
return Long.valueOf(simpleDateFormat.format(new Date())).longValue();
}
/**
* Returns the GMT time in milliseconds.
* @return
*/
public static long currentGMTTimeMillis() {
long currentTime = System.currentTimeMillis();
return currentTime - TimeZone.getDefault().getRawOffset();
}
/**
* Formats given date according to format style
* @param date
* @param format
* @return
*/
public static String formatDate(Date date, String format) {
return DateTimeUtils.formatDate(date, format, TimeZone.getDefault());
}
/**
* Formats given date according to format style
* @param date
* @param format
* @return
*/
public static String formatDate(Date date, String format, TimeZone timeZone) {
if (date == null) {
date = new Date();
}
SimpleDateFormat simpleDateFormat = null;
if (format == null || format.length() == 0) {
simpleDateFormat = new SimpleDateFormat();
} else {
simpleDateFormat = new SimpleDateFormat(format);
}
if (timeZone != null) {
simpleDateFormat.setTimeZone(timeZone);
}
return simpleDateFormat.format(date);
}
/**
* Formats given date according to specified locale and date style
*
* @param date Date to convert
* @param locale Locale to use for formatting date
* @param dateStyle Date style
* @return String representation of date according to given locale and date style
* @see java.text.DateFormat
*/
public static String formatDate(Date date, Locale locale, int dateStyle) {
DateFormat formatter = DateFormat.getDateInstance(dateStyle, locale);
return formatter.format(date);
}
/**
* Formats given date according to specified locale and DateFormat.MEDIUM style
*
* @param date Date to convert
* @param locale Locale to use for formatting date
* @return String representation of date according to given locale and DateFormat.MEDIUM style
* @see java.text.DateFormat
* @see java.text.DateFormat#MEDIUM
*/
public static String formatDate(Date date, Locale locale) {
return formatDate(date, locale, DateFormat.MEDIUM);
}
/**
* Parses given string according to specified locale and date style
*
* @param source Source string to parse date from
* @param locale Locale to use for parsing date
* @param dateStyle Date style
* @return Date object corresponding to representation given in source string
* @throws ParseException if given string could not be properly parsed according to given locale and style
* @see java.text.DateFormat
*/
public static Date parseDate(String source, Locale locale, int dateStyle) throws ParseException {
DateFormat formatter = DateFormat.getDateInstance(dateStyle, locale);
return formatter.parse(source);
}
/**
* Parses given string according to specified locale and DateFormat.MEDIUM style
*
* @param source Source string to parse date from
* @param locale Locale to use for parsing date
* @return Date object corresponding to representation given in source string
* @throws ParseException if given string could not be properly parsed according to given locale and DateFormat.MEDIUM style
* @see java.text.DateFormat
* @see java.text.DateFormat#MEDIUM
*/
public static Date parseDate(String source, Locale locale) throws ParseException {
return parseDate(source, locale, DateFormat.MEDIUM);
}
/**
* Formats given time according to specified locale and time style
*
* @param time Time to convert
* @param locale Locale to use for formatting time
* @param timeStyle Time style
* @return String representation of time according to given locale and time style
* @see java.text.DateFormat
*/
public static String formatTime(Date time, Locale locale, int timeStyle) {
DateFormat formatter = DateFormat.getTimeInstance(timeStyle, locale);
return formatter.format(time);
}
/**
* Formats given time according to specified locale and DateFormat.MEDIUM style
*
* @param time Time to convert
* @param locale Locale to use for formatting time
* @return String representation of time according to given locale and DateFormat.MEDIUM style
* @see java.text.DateFormat
* @see java.text.DateFormat#MEDIUM
*/
public static String formatTime(Date time, Locale locale) {
return formatTime(time, locale, DateFormat.MEDIUM);
}
/**
* Parses given string according to specified locale and time style
*
* @param source Source string to parse time from
* @param locale Locale to use for parsing time
* @param timeStyle Time style
* @return Time object corresponding to representation given in source string
* @throws ParseException if given string could not be properly parsed according to given locale and style
* @see java.text.DateFormat
*/
public static Date parseTime(String source, Locale locale, int timeStyle) throws ParseException {
DateFormat formatter = DateFormat.getTimeInstance(timeStyle, locale);
return formatter.parse(source);
}
/**
* Parses given string according to specified locale and DateFormat.MEDIUM style
*
* @param source Source string to parse time from
* @param locale Locale to use for parsing time
* @return Time object corresponding to representation given in source string
* @throws ParseException if given string could not be properly parsed according to given locale and DateFormat.MEDIUM style
* @see java.text.DateFormat
* @see java.text.DateFormat#MEDIUM
*/
public static Date parseTime(String source, Locale locale) throws ParseException {
return parseTime(source, locale, DateFormat.MEDIUM);
}
/**
* Formats given date and time according to specified locale and date style
*
* @param date Date object to convert
* @param locale Locale to use for formatting date and time
* @param dateStyle Date style
* @param timeStyle Time style
* @return String representation of date and time according to given locale and date style
* @see java.text.DateFormat
*/
public static String formatDateTime(Date date, Locale locale, int dateStyle, int timeStyle) {
DateFormat formatter = DateFormat.getDateTimeInstance(dateStyle, timeStyle, locale);
return formatter.format(date);
}
/**
* Formats given date and time according to specified locale and DateFormat.MEDIUM style
*
* @param date Date object to convert
* @param locale Locale to use for formatting date and time
* @return String representation of date and time according to given locale and DateFormat.MEDIUM style
* @see java.text.DateFormat
* @see java.text.DateFormat#MEDIUM
*/
public static String formatDateTime(Date date, Locale locale) {
return formatDateTime(date, locale, DateFormat.MEDIUM, DateFormat.MEDIUM);
}
/**
* Formats given date and time according to specified locale and DateFormat.MEDIUM style
*
* @param date Date object to convert
* @return String representation of date and time according to Globals.DEFAULT_LOCALE and DateFormat.MEDIUM style
* @see java.text.DateFormat
* @see java.text.DateFormat#MEDIUM
*/
public static String formatDateTime(Date date) {
return formatDateTime(date, Globals.DEFAULT_LOCALE);
}
/**
* Parses given string according to specified locale and date and time styles
*
* @param source Source string to parse date and time from
* @param locale Locale to use for parsing date and time
* @param dateStyle Date style
* @param timeStyle Time style
* @return Date object corresponding to representation given in source string
* @throws ParseException if given string could not be properly parsed according to given locale and style
* @see java.text.DateFormat
*/
public static Date parseDateTime(String source, Locale locale, int dateStyle, int timeStyle) throws ParseException {
DateFormat formatter = DateFormat.getDateTimeInstance(dateStyle, timeStyle, locale);
return formatter.parse(source);
}
/**
* Parses given string according to specified locale and DateFormat.MEDIUM style
*
* @param source Source string to parse date and time from
* @param locale Locale to use for parsing date and time
* @return Date object corresponding to representation given in source string
* @throws ParseException if given string could not be properly parsed according to given locale and DateFormat.MEDIUM style
* @see java.text.DateFormat
* @see java.text.DateFormat#MEDIUM
*/
public static Date parseDateTime(String source, Locale locale) throws ParseException {
return parseDateTime(source, locale, DateFormat.MEDIUM, DateFormat.MEDIUM);
}
/**
* Parses given string according to specified locale and DateFormat.MEDIUM style
*
* @param source Source string to parse date and time from
* @return Date object corresponding to Globals.DEFAULT_LOCALE in source string
* @throws ParseException if given string could not be properly parsed according to given locale and DateFormat.MEDIUM style
* @see java.text.DateFormat
* @see java.text.DateFormat#MEDIUM
*/
public static Date parseDateTime(String source) throws ParseException {
return parseDateTime(source, Globals.DEFAULT_LOCALE);
}
/**
* Formats given Date object according to specified locale and a given
* pattern.
*
* @param date Date object to convert
* @param locale Locale to use for formatting
* @param pattern Pattern to use
* @return String representation of date and time according to given locale and DateFormat.MEDIUM style
* @see java.text.SimpleDateFormat
*/
public static String format(Date date, Locale locale, String pattern) {
SimpleDateFormat formatter = new SimpleDateFormat(pattern, locale);
return formatter.format(date);
}
/**
* Parses given string according to specified locale and a given pattern.
*
* @param source Source string to parse date and time from
* @param locale Locale to use for parsing date and time
* @param pattern Pattern to use
* @return Date object corresponding to representation given in source
* string
* @throws ParseException if given string could not be properly parsed
* according to given locale and pattern
* @see java.text.SimpleDateFormat
*/
public static Date parse(String source, Locale locale, String pattern)
throws ParseException {
SimpleDateFormat formatter = new SimpleDateFormat(pattern, locale);
return formatter.parse(source);
}
public static boolean isLeapYear() {
int currentYear = Calendar.getInstance().get(Calendar.YEAR);
if ((currentYear % 4 == 0 && currentYear % 100 != 0)
|| currentYear % 400 == 0) {
return true;
}
return Globals.DEFAULT_VALUE_BOOLEAN;
}
public static String getCurrentMonthFirstDay(String format) {
int firstDay = Calendar.getInstance().getActualMinimum(Calendar.DAY_OF_MONTH);
return getCurrentDateByDay(format, firstDay);
}
public static String getCurrentMonthLastDay(String format) {
int lastDay = Calendar.getInstance().getActualMaximum(Calendar.DAY_OF_MONTH);
return getCurrentDateByDay(format, lastDay);
}
private static String getCurrentDateByDay(String format, int day) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
calendar.set(Calendar.DAY_OF_MONTH, day);
return new SimpleDateFormat(format).format(calendar.getTime());
}
private static String getTimeZone() {
String timeZone = "";
Integer zone = TimeZone.getDefault().getRawOffset() / (1000 * 60 * 60);
if (zone > 0) {
timeZone = "+";
}
timeZone += zone + ":00";
return timeZone;
}
}