jtulach@1334: /*
jtulach@1334:  * Copyright (c) 1994, 2010, Oracle and/or its affiliates. All rights reserved.
jtulach@1334:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jtulach@1334:  *
jtulach@1334:  * This code is free software; you can redistribute it and/or modify it
jtulach@1334:  * under the terms of the GNU General Public License version 2 only, as
jtulach@1334:  * published by the Free Software Foundation.  Oracle designates this
jtulach@1334:  * particular file as subject to the "Classpath" exception as provided
jtulach@1334:  * by Oracle in the LICENSE file that accompanied this code.
jtulach@1334:  *
jtulach@1334:  * This code is distributed in the hope that it will be useful, but WITHOUT
jtulach@1334:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jtulach@1334:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jtulach@1334:  * version 2 for more details (a copy is included in the LICENSE file that
jtulach@1334:  * accompanied this code).
jtulach@1334:  *
jtulach@1334:  * You should have received a copy of the GNU General Public License version
jtulach@1334:  * 2 along with this work; if not, write to the Free Software Foundation,
jtulach@1334:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jtulach@1334:  *
jtulach@1334:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
jtulach@1334:  * or visit www.oracle.com if you need additional information or have any
jtulach@1334:  * questions.
jtulach@1334:  */
jtulach@1334: 
jtulach@1334: package java.util;
jtulach@1334: 
jtulach@1334: import java.text.DateFormat;
jtulach@1334: import java.io.IOException;
jtulach@1334: import java.io.ObjectOutputStream;
jtulach@1334: import java.io.ObjectInputStream;
jtulach@1334: import java.lang.ref.SoftReference;
jtulach@1334: import sun.util.calendar.BaseCalendar;
jtulach@1334: import sun.util.calendar.CalendarDate;
jtulach@1334: import sun.util.calendar.CalendarSystem;
jtulach@1334: import sun.util.calendar.CalendarUtils;
jtulach@1334: import sun.util.calendar.Era;
jtulach@1334: import sun.util.calendar.Gregorian;
jtulach@1334: import sun.util.calendar.ZoneInfo;
jtulach@1334: 
jtulach@1334: /**
jtulach@1334:  * The class <code>Date</code> represents a specific instant
jtulach@1334:  * in time, with millisecond precision.
jtulach@1334:  * <p>
jtulach@1334:  * Prior to JDK&nbsp;1.1, the class <code>Date</code> had two additional
jtulach@1334:  * functions.  It allowed the interpretation of dates as year, month, day, hour,
jtulach@1334:  * minute, and second values.  It also allowed the formatting and parsing
jtulach@1334:  * of date strings.  Unfortunately, the API for these functions was not
jtulach@1334:  * amenable to internationalization.  As of JDK&nbsp;1.1, the
jtulach@1334:  * <code>Calendar</code> class should be used to convert between dates and time
jtulach@1334:  * fields and the <code>DateFormat</code> class should be used to format and
jtulach@1334:  * parse date strings.
jtulach@1334:  * The corresponding methods in <code>Date</code> are deprecated.
jtulach@1334:  * <p>
jtulach@1334:  * Although the <code>Date</code> class is intended to reflect
jtulach@1334:  * coordinated universal time (UTC), it may not do so exactly,
jtulach@1334:  * depending on the host environment of the Java Virtual Machine.
jtulach@1334:  * Nearly all modern operating systems assume that 1&nbsp;day&nbsp;=
jtulach@1334:  * 24&nbsp;&times;&nbsp;60&nbsp;&times;&nbsp;60&nbsp;= 86400 seconds
jtulach@1334:  * in all cases. In UTC, however, about once every year or two there
jtulach@1334:  * is an extra second, called a "leap second." The leap
jtulach@1334:  * second is always added as the last second of the day, and always
jtulach@1334:  * on December 31 or June 30. For example, the last minute of the
jtulach@1334:  * year 1995 was 61 seconds long, thanks to an added leap second.
jtulach@1334:  * Most computer clocks are not accurate enough to be able to reflect
jtulach@1334:  * the leap-second distinction.
jtulach@1334:  * <p>
jtulach@1334:  * Some computer standards are defined in terms of Greenwich mean
jtulach@1334:  * time (GMT), which is equivalent to universal time (UT).  GMT is
jtulach@1334:  * the "civil" name for the standard; UT is the
jtulach@1334:  * "scientific" name for the same standard. The
jtulach@1334:  * distinction between UTC and UT is that UTC is based on an atomic
jtulach@1334:  * clock and UT is based on astronomical observations, which for all
jtulach@1334:  * practical purposes is an invisibly fine hair to split. Because the
jtulach@1334:  * earth's rotation is not uniform (it slows down and speeds up
jtulach@1334:  * in complicated ways), UT does not always flow uniformly. Leap
jtulach@1334:  * seconds are introduced as needed into UTC so as to keep UTC within
jtulach@1334:  * 0.9 seconds of UT1, which is a version of UT with certain
jtulach@1334:  * corrections applied. There are other time and date systems as
jtulach@1334:  * well; for example, the time scale used by the satellite-based
jtulach@1334:  * global positioning system (GPS) is synchronized to UTC but is
jtulach@1334:  * <i>not</i> adjusted for leap seconds. An interesting source of
jtulach@1334:  * further information is the U.S. Naval Observatory, particularly
jtulach@1334:  * the Directorate of Time at:
jtulach@1334:  * <blockquote><pre>
jtulach@1334:  *     <a href=http://tycho.usno.navy.mil>http://tycho.usno.navy.mil</a>
jtulach@1334:  * </pre></blockquote>
jtulach@1334:  * <p>
jtulach@1334:  * and their definitions of "Systems of Time" at:
jtulach@1334:  * <blockquote><pre>
jtulach@1334:  *     <a href=http://tycho.usno.navy.mil/systime.html>http://tycho.usno.navy.mil/systime.html</a>
jtulach@1334:  * </pre></blockquote>
jtulach@1334:  * <p>
jtulach@1334:  * In all methods of class <code>Date</code> that accept or return
jtulach@1334:  * year, month, date, hours, minutes, and seconds values, the
jtulach@1334:  * following representations are used:
jtulach@1334:  * <ul>
jtulach@1334:  * <li>A year <i>y</i> is represented by the integer
jtulach@1334:  *     <i>y</i>&nbsp;<code>-&nbsp;1900</code>.
jtulach@1334:  * <li>A month is represented by an integer from 0 to 11; 0 is January,
jtulach@1334:  *     1 is February, and so forth; thus 11 is December.
jtulach@1334:  * <li>A date (day of month) is represented by an integer from 1 to 31
jtulach@1334:  *     in the usual manner.
jtulach@1334:  * <li>An hour is represented by an integer from 0 to 23. Thus, the hour
jtulach@1334:  *     from midnight to 1 a.m. is hour 0, and the hour from noon to 1
jtulach@1334:  *     p.m. is hour 12.
jtulach@1334:  * <li>A minute is represented by an integer from 0 to 59 in the usual manner.
jtulach@1334:  * <li>A second is represented by an integer from 0 to 61; the values 60 and
jtulach@1334:  *     61 occur only for leap seconds and even then only in Java
jtulach@1334:  *     implementations that actually track leap seconds correctly. Because
jtulach@1334:  *     of the manner in which leap seconds are currently introduced, it is
jtulach@1334:  *     extremely unlikely that two leap seconds will occur in the same
jtulach@1334:  *     minute, but this specification follows the date and time conventions
jtulach@1334:  *     for ISO C.
jtulach@1334:  * </ul>
jtulach@1334:  * <p>
jtulach@1334:  * In all cases, arguments given to methods for these purposes need
jtulach@1334:  * not fall within the indicated ranges; for example, a date may be
jtulach@1334:  * specified as January 32 and is interpreted as meaning February 1.
jtulach@1334:  *
jtulach@1334:  * @author  James Gosling
jtulach@1334:  * @author  Arthur van Hoff
jtulach@1334:  * @author  Alan Liu
jtulach@1334:  * @see     java.text.DateFormat
jtulach@1334:  * @see     java.util.Calendar
jtulach@1334:  * @see     java.util.TimeZone
jtulach@1334:  * @since   JDK1.0
jtulach@1334:  */
jtulach@1334: public class Date
jtulach@1334:     implements java.io.Serializable, Cloneable, Comparable<Date>
jtulach@1334: {
jtulach@1334:     private static final BaseCalendar gcal =
jtulach@1334:                                 CalendarSystem.getGregorianCalendar();
jtulach@1334:     private static BaseCalendar jcal;
jtulach@1334: 
jtulach@1334:     private transient long fastTime;
jtulach@1334: 
jtulach@1334:     /*
jtulach@1334:      * If cdate is null, then fastTime indicates the time in millis.
jtulach@1334:      * If cdate.isNormalized() is true, then fastTime and cdate are in
jtulach@1334:      * synch. Otherwise, fastTime is ignored, and cdate indicates the
jtulach@1334:      * time.
jtulach@1334:      */
jtulach@1334:     private transient BaseCalendar.Date cdate;
jtulach@1334: 
jtulach@1334:     // Initialized just before the value is used. See parse().
jtulach@1334:     private static int defaultCenturyStart;
jtulach@1334: 
jtulach@1334:     /* use serialVersionUID from modified java.util.Date for
jtulach@1334:      * interoperability with JDK1.1. The Date was modified to write
jtulach@1334:      * and read only the UTC time.
jtulach@1334:      */
jtulach@1334:     private static final long serialVersionUID = 7523967970034938905L;
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Allocates a <code>Date</code> object and initializes it so that
jtulach@1334:      * it represents the time at which it was allocated, measured to the
jtulach@1334:      * nearest millisecond.
jtulach@1334:      *
jtulach@1334:      * @see     java.lang.System#currentTimeMillis()
jtulach@1334:      */
jtulach@1334:     public Date() {
jtulach@1334:         this(System.currentTimeMillis());
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Allocates a <code>Date</code> object and initializes it to
jtulach@1334:      * represent the specified number of milliseconds since the
jtulach@1334:      * standard base time known as "the epoch", namely January 1,
jtulach@1334:      * 1970, 00:00:00 GMT.
jtulach@1334:      *
jtulach@1334:      * @param   date   the milliseconds since January 1, 1970, 00:00:00 GMT.
jtulach@1334:      * @see     java.lang.System#currentTimeMillis()
jtulach@1334:      */
jtulach@1334:     public Date(long date) {
jtulach@1334:         fastTime = date;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Allocates a <code>Date</code> object and initializes it so that
jtulach@1334:      * it represents midnight, local time, at the beginning of the day
jtulach@1334:      * specified by the <code>year</code>, <code>month</code>, and
jtulach@1334:      * <code>date</code> arguments.
jtulach@1334:      *
jtulach@1334:      * @param   year    the year minus 1900.
jtulach@1334:      * @param   month   the month between 0-11.
jtulach@1334:      * @param   date    the day of the month between 1-31.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.set(year + 1900, month, date)</code>
jtulach@1334:      * or <code>GregorianCalendar(year + 1900, month, date)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public Date(int year, int month, int date) {
jtulach@1334:         this(year, month, date, 0, 0, 0);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Allocates a <code>Date</code> object and initializes it so that
jtulach@1334:      * it represents the instant at the start of the minute specified by
jtulach@1334:      * the <code>year</code>, <code>month</code>, <code>date</code>,
jtulach@1334:      * <code>hrs</code>, and <code>min</code> arguments, in the local
jtulach@1334:      * time zone.
jtulach@1334:      *
jtulach@1334:      * @param   year    the year minus 1900.
jtulach@1334:      * @param   month   the month between 0-11.
jtulach@1334:      * @param   date    the day of the month between 1-31.
jtulach@1334:      * @param   hrs     the hours between 0-23.
jtulach@1334:      * @param   min     the minutes between 0-59.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.set(year + 1900, month, date,
jtulach@1334:      * hrs, min)</code> or <code>GregorianCalendar(year + 1900,
jtulach@1334:      * month, date, hrs, min)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public Date(int year, int month, int date, int hrs, int min) {
jtulach@1334:         this(year, month, date, hrs, min, 0);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Allocates a <code>Date</code> object and initializes it so that
jtulach@1334:      * it represents the instant at the start of the second specified
jtulach@1334:      * by the <code>year</code>, <code>month</code>, <code>date</code>,
jtulach@1334:      * <code>hrs</code>, <code>min</code>, and <code>sec</code> arguments,
jtulach@1334:      * in the local time zone.
jtulach@1334:      *
jtulach@1334:      * @param   year    the year minus 1900.
jtulach@1334:      * @param   month   the month between 0-11.
jtulach@1334:      * @param   date    the day of the month between 1-31.
jtulach@1334:      * @param   hrs     the hours between 0-23.
jtulach@1334:      * @param   min     the minutes between 0-59.
jtulach@1334:      * @param   sec     the seconds between 0-59.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.set(year + 1900, month, date,
jtulach@1334:      * hrs, min, sec)</code> or <code>GregorianCalendar(year + 1900,
jtulach@1334:      * month, date, hrs, min, sec)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public Date(int year, int month, int date, int hrs, int min, int sec) {
jtulach@1334:         int y = year + 1900;
jtulach@1334:         // month is 0-based. So we have to normalize month to support Long.MAX_VALUE.
jtulach@1334:         if (month >= 12) {
jtulach@1334:             y += month / 12;
jtulach@1334:             month %= 12;
jtulach@1334:         } else if (month < 0) {
jtulach@1334:             y += CalendarUtils.floorDivide(month, 12);
jtulach@1334:             month = CalendarUtils.mod(month, 12);
jtulach@1334:         }
jtulach@1334:         BaseCalendar cal = getCalendarSystem(y);
jtulach@1334:         cdate = (BaseCalendar.Date) cal.newCalendarDate(TimeZone.getDefaultRef());
jtulach@1334:         cdate.setNormalizedDate(y, month + 1, date).setTimeOfDay(hrs, min, sec, 0);
jtulach@1334:         getTimeImpl();
jtulach@1334:         cdate = null;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Allocates a <code>Date</code> object and initializes it so that
jtulach@1334:      * it represents the date and time indicated by the string
jtulach@1334:      * <code>s</code>, which is interpreted as if by the
jtulach@1334:      * {@link Date#parse} method.
jtulach@1334:      *
jtulach@1334:      * @param   s   a string representation of the date.
jtulach@1334:      * @see     java.text.DateFormat
jtulach@1334:      * @see     java.util.Date#parse(java.lang.String)
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>DateFormat.parse(String s)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public Date(String s) {
jtulach@1334:         this(parse(s));
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Return a copy of this object.
jtulach@1334:      */
jtulach@1334:     public Object clone() {
jtulach@1334:         Date d = null;
jtulach@1334:         try {
jtulach@1334:             d = (Date)super.clone();
jtulach@1334:             if (cdate != null) {
jtulach@1334:                 d.cdate = (BaseCalendar.Date) cdate.clone();
jtulach@1334:             }
jtulach@1334:         } catch (CloneNotSupportedException e) {} // Won't happen
jtulach@1334:         return d;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Determines the date and time based on the arguments. The
jtulach@1334:      * arguments are interpreted as a year, month, day of the month,
jtulach@1334:      * hour of the day, minute within the hour, and second within the
jtulach@1334:      * minute, exactly as for the <tt>Date</tt> constructor with six
jtulach@1334:      * arguments, except that the arguments are interpreted relative
jtulach@1334:      * to UTC rather than to the local time zone. The time indicated is
jtulach@1334:      * returned represented as the distance, measured in milliseconds,
jtulach@1334:      * of that time from the epoch (00:00:00 GMT on January 1, 1970).
jtulach@1334:      *
jtulach@1334:      * @param   year    the year minus 1900.
jtulach@1334:      * @param   month   the month between 0-11.
jtulach@1334:      * @param   date    the day of the month between 1-31.
jtulach@1334:      * @param   hrs     the hours between 0-23.
jtulach@1334:      * @param   min     the minutes between 0-59.
jtulach@1334:      * @param   sec     the seconds between 0-59.
jtulach@1334:      * @return  the number of milliseconds since January 1, 1970, 00:00:00 GMT for
jtulach@1334:      *          the date and time specified by the arguments.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.set(year + 1900, month, date,
jtulach@1334:      * hrs, min, sec)</code> or <code>GregorianCalendar(year + 1900,
jtulach@1334:      * month, date, hrs, min, sec)</code>, using a UTC
jtulach@1334:      * <code>TimeZone</code>, followed by <code>Calendar.getTime().getTime()</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public static long UTC(int year, int month, int date,
jtulach@1334:                            int hrs, int min, int sec) {
jtulach@1334:         int y = year + 1900;
jtulach@1334:         // month is 0-based. So we have to normalize month to support Long.MAX_VALUE.
jtulach@1334:         if (month >= 12) {
jtulach@1334:             y += month / 12;
jtulach@1334:             month %= 12;
jtulach@1334:         } else if (month < 0) {
jtulach@1334:             y += CalendarUtils.floorDivide(month, 12);
jtulach@1334:             month = CalendarUtils.mod(month, 12);
jtulach@1334:         }
jtulach@1334:         int m = month + 1;
jtulach@1334:         BaseCalendar cal = getCalendarSystem(y);
jtulach@1334:         BaseCalendar.Date udate = (BaseCalendar.Date) cal.newCalendarDate(null);
jtulach@1334:         udate.setNormalizedDate(y, m, date).setTimeOfDay(hrs, min, sec, 0);
jtulach@1334: 
jtulach@1334:         // Use a Date instance to perform normalization. Its fastTime
jtulach@1334:         // is the UTC value after the normalization.
jtulach@1334:         Date d = new Date(0);
jtulach@1334:         d.normalize(udate);
jtulach@1334:         return d.fastTime;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Attempts to interpret the string <tt>s</tt> as a representation
jtulach@1334:      * of a date and time. If the attempt is successful, the time
jtulach@1334:      * indicated is returned represented as the distance, measured in
jtulach@1334:      * milliseconds, of that time from the epoch (00:00:00 GMT on
jtulach@1334:      * January 1, 1970). If the attempt fails, an
jtulach@1334:      * <tt>IllegalArgumentException</tt> is thrown.
jtulach@1334:      * <p>
jtulach@1334:      * It accepts many syntaxes; in particular, it recognizes the IETF
jtulach@1334:      * standard date syntax: "Sat, 12 Aug 1995 13:30:00 GMT". It also
jtulach@1334:      * understands the continental U.S. time-zone abbreviations, but for
jtulach@1334:      * general use, a time-zone offset should be used: "Sat, 12 Aug 1995
jtulach@1334:      * 13:30:00 GMT+0430" (4 hours, 30 minutes west of the Greenwich
jtulach@1334:      * meridian). If no time zone is specified, the local time zone is
jtulach@1334:      * assumed. GMT and UTC are considered equivalent.
jtulach@1334:      * <p>
jtulach@1334:      * The string <tt>s</tt> is processed from left to right, looking for
jtulach@1334:      * data of interest. Any material in <tt>s</tt> that is within the
jtulach@1334:      * ASCII parenthesis characters <tt>(</tt> and <tt>)</tt> is ignored.
jtulach@1334:      * Parentheses may be nested. Otherwise, the only characters permitted
jtulach@1334:      * within <tt>s</tt> are these ASCII characters:
jtulach@1334:      * <blockquote><pre>
jtulach@1334:      * abcdefghijklmnopqrstuvwxyz
jtulach@1334:      * ABCDEFGHIJKLMNOPQRSTUVWXYZ
jtulach@1334:      * 0123456789,+-:/</pre></blockquote>
jtulach@1334:      * and whitespace characters.<p>
jtulach@1334:      * A consecutive sequence of decimal digits is treated as a decimal
jtulach@1334:      * number:<ul>
jtulach@1334:      * <li>If a number is preceded by <tt>+</tt> or <tt>-</tt> and a year
jtulach@1334:      *     has already been recognized, then the number is a time-zone
jtulach@1334:      *     offset. If the number is less than 24, it is an offset measured
jtulach@1334:      *     in hours. Otherwise, it is regarded as an offset in minutes,
jtulach@1334:      *     expressed in 24-hour time format without punctuation. A
jtulach@1334:      *     preceding <tt>-</tt> means a westward offset. Time zone offsets
jtulach@1334:      *     are always relative to UTC (Greenwich). Thus, for example,
jtulach@1334:      *     <tt>-5</tt> occurring in the string would mean "five hours west
jtulach@1334:      *     of Greenwich" and <tt>+0430</tt> would mean "four hours and
jtulach@1334:      *     thirty minutes east of Greenwich." It is permitted for the
jtulach@1334:      *     string to specify <tt>GMT</tt>, <tt>UT</tt>, or <tt>UTC</tt>
jtulach@1334:      *     redundantly-for example, <tt>GMT-5</tt> or <tt>utc+0430</tt>.
jtulach@1334:      * <li>The number is regarded as a year number if one of the
jtulach@1334:      *     following conditions is true:
jtulach@1334:      * <ul>
jtulach@1334:      *     <li>The number is equal to or greater than 70 and followed by a
jtulach@1334:      *         space, comma, slash, or end of string
jtulach@1334:      *     <li>The number is less than 70, and both a month and a day of
jtulach@1334:      *         the month have already been recognized</li>
jtulach@1334:      * </ul>
jtulach@1334:      *     If the recognized year number is less than 100, it is
jtulach@1334:      *     interpreted as an abbreviated year relative to a century of
jtulach@1334:      *     which dates are within 80 years before and 19 years after
jtulach@1334:      *     the time when the Date class is initialized.
jtulach@1334:      *     After adjusting the year number, 1900 is subtracted from
jtulach@1334:      *     it. For example, if the current year is 1999 then years in
jtulach@1334:      *     the range 19 to 99 are assumed to mean 1919 to 1999, while
jtulach@1334:      *     years from 0 to 18 are assumed to mean 2000 to 2018.  Note
jtulach@1334:      *     that this is slightly different from the interpretation of
jtulach@1334:      *     years less than 100 that is used in {@link java.text.SimpleDateFormat}.
jtulach@1334:      * <li>If the number is followed by a colon, it is regarded as an hour,
jtulach@1334:      *     unless an hour has already been recognized, in which case it is
jtulach@1334:      *     regarded as a minute.
jtulach@1334:      * <li>If the number is followed by a slash, it is regarded as a month
jtulach@1334:      *     (it is decreased by 1 to produce a number in the range <tt>0</tt>
jtulach@1334:      *     to <tt>11</tt>), unless a month has already been recognized, in
jtulach@1334:      *     which case it is regarded as a day of the month.
jtulach@1334:      * <li>If the number is followed by whitespace, a comma, a hyphen, or
jtulach@1334:      *     end of string, then if an hour has been recognized but not a
jtulach@1334:      *     minute, it is regarded as a minute; otherwise, if a minute has
jtulach@1334:      *     been recognized but not a second, it is regarded as a second;
jtulach@1334:      *     otherwise, it is regarded as a day of the month. </ul><p>
jtulach@1334:      * A consecutive sequence of letters is regarded as a word and treated
jtulach@1334:      * as follows:<ul>
jtulach@1334:      * <li>A word that matches <tt>AM</tt>, ignoring case, is ignored (but
jtulach@1334:      *     the parse fails if an hour has not been recognized or is less
jtulach@1334:      *     than <tt>1</tt> or greater than <tt>12</tt>).
jtulach@1334:      * <li>A word that matches <tt>PM</tt>, ignoring case, adds <tt>12</tt>
jtulach@1334:      *     to the hour (but the parse fails if an hour has not been
jtulach@1334:      *     recognized or is less than <tt>1</tt> or greater than <tt>12</tt>).
jtulach@1334:      * <li>Any word that matches any prefix of <tt>SUNDAY, MONDAY, TUESDAY,
jtulach@1334:      *     WEDNESDAY, THURSDAY, FRIDAY</tt>, or <tt>SATURDAY</tt>, ignoring
jtulach@1334:      *     case, is ignored. For example, <tt>sat, Friday, TUE</tt>, and
jtulach@1334:      *     <tt>Thurs</tt> are ignored.
jtulach@1334:      * <li>Otherwise, any word that matches any prefix of <tt>JANUARY,
jtulach@1334:      *     FEBRUARY, MARCH, APRIL, MAY, JUNE, JULY, AUGUST, SEPTEMBER,
jtulach@1334:      *     OCTOBER, NOVEMBER</tt>, or <tt>DECEMBER</tt>, ignoring case, and
jtulach@1334:      *     considering them in the order given here, is recognized as
jtulach@1334:      *     specifying a month and is converted to a number (<tt>0</tt> to
jtulach@1334:      *     <tt>11</tt>). For example, <tt>aug, Sept, april</tt>, and
jtulach@1334:      *     <tt>NOV</tt> are recognized as months. So is <tt>Ma</tt>, which
jtulach@1334:      *     is recognized as <tt>MARCH</tt>, not <tt>MAY</tt>.
jtulach@1334:      * <li>Any word that matches <tt>GMT, UT</tt>, or <tt>UTC</tt>, ignoring
jtulach@1334:      *     case, is treated as referring to UTC.
jtulach@1334:      * <li>Any word that matches <tt>EST, CST, MST</tt>, or <tt>PST</tt>,
jtulach@1334:      *     ignoring case, is recognized as referring to the time zone in
jtulach@1334:      *     North America that is five, six, seven, or eight hours west of
jtulach@1334:      *     Greenwich, respectively. Any word that matches <tt>EDT, CDT,
jtulach@1334:      *     MDT</tt>, or <tt>PDT</tt>, ignoring case, is recognized as
jtulach@1334:      *     referring to the same time zone, respectively, during daylight
jtulach@1334:      *     saving time.</ul><p>
jtulach@1334:      * Once the entire string s has been scanned, it is converted to a time
jtulach@1334:      * result in one of two ways. If a time zone or time-zone offset has been
jtulach@1334:      * recognized, then the year, month, day of month, hour, minute, and
jtulach@1334:      * second are interpreted in UTC and then the time-zone offset is
jtulach@1334:      * applied. Otherwise, the year, month, day of month, hour, minute, and
jtulach@1334:      * second are interpreted in the local time zone.
jtulach@1334:      *
jtulach@1334:      * @param   s   a string to be parsed as a date.
jtulach@1334:      * @return  the number of milliseconds since January 1, 1970, 00:00:00 GMT
jtulach@1334:      *          represented by the string argument.
jtulach@1334:      * @see     java.text.DateFormat
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>DateFormat.parse(String s)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public static long parse(String s) {
jtulach@1334:         int year = Integer.MIN_VALUE;
jtulach@1334:         int mon = -1;
jtulach@1334:         int mday = -1;
jtulach@1334:         int hour = -1;
jtulach@1334:         int min = -1;
jtulach@1334:         int sec = -1;
jtulach@1334:         int millis = -1;
jtulach@1334:         int c = -1;
jtulach@1334:         int i = 0;
jtulach@1334:         int n = -1;
jtulach@1334:         int wst = -1;
jtulach@1334:         int tzoffset = -1;
jtulach@1334:         int prevc = 0;
jtulach@1334:     syntax:
jtulach@1334:         {
jtulach@1334:             if (s == null)
jtulach@1334:                 break syntax;
jtulach@1334:             int limit = s.length();
jtulach@1334:             while (i < limit) {
jtulach@1334:                 c = s.charAt(i);
jtulach@1334:                 i++;
jtulach@1334:                 if (c <= ' ' || c == ',')
jtulach@1334:                     continue;
jtulach@1334:                 if (c == '(') { // skip comments
jtulach@1334:                     int depth = 1;
jtulach@1334:                     while (i < limit) {
jtulach@1334:                         c = s.charAt(i);
jtulach@1334:                         i++;
jtulach@1334:                         if (c == '(') depth++;
jtulach@1334:                         else if (c == ')')
jtulach@1334:                             if (--depth <= 0)
jtulach@1334:                                 break;
jtulach@1334:                     }
jtulach@1334:                     continue;
jtulach@1334:                 }
jtulach@1334:                 if ('0' <= c && c <= '9') {
jtulach@1334:                     n = c - '0';
jtulach@1334:                     while (i < limit && '0' <= (c = s.charAt(i)) && c <= '9') {
jtulach@1334:                         n = n * 10 + c - '0';
jtulach@1334:                         i++;
jtulach@1334:                     }
jtulach@1334:                     if (prevc == '+' || prevc == '-' && year != Integer.MIN_VALUE) {
jtulach@1334:                         // timezone offset
jtulach@1334:                         if (n < 24)
jtulach@1334:                             n = n * 60; // EG. "GMT-3"
jtulach@1334:                         else
jtulach@1334:                             n = n % 100 + n / 100 * 60; // eg "GMT-0430"
jtulach@1334:                         if (prevc == '+')   // plus means east of GMT
jtulach@1334:                             n = -n;
jtulach@1334:                         if (tzoffset != 0 && tzoffset != -1)
jtulach@1334:                             break syntax;
jtulach@1334:                         tzoffset = n;
jtulach@1334:                     } else if (n >= 70)
jtulach@1334:                         if (year != Integer.MIN_VALUE)
jtulach@1334:                             break syntax;
jtulach@1334:                         else if (c <= ' ' || c == ',' || c == '/' || i >= limit)
jtulach@1334:                             // year = n < 1900 ? n : n - 1900;
jtulach@1334:                             year = n;
jtulach@1334:                         else
jtulach@1334:                             break syntax;
jtulach@1334:                     else if (c == ':')
jtulach@1334:                         if (hour < 0)
jtulach@1334:                             hour = (byte) n;
jtulach@1334:                         else if (min < 0)
jtulach@1334:                             min = (byte) n;
jtulach@1334:                         else
jtulach@1334:                             break syntax;
jtulach@1334:                     else if (c == '/')
jtulach@1334:                         if (mon < 0)
jtulach@1334:                             mon = (byte) (n - 1);
jtulach@1334:                         else if (mday < 0)
jtulach@1334:                             mday = (byte) n;
jtulach@1334:                         else
jtulach@1334:                             break syntax;
jtulach@1334:                     else if (i < limit && c != ',' && c > ' ' && c != '-')
jtulach@1334:                         break syntax;
jtulach@1334:                     else if (hour >= 0 && min < 0)
jtulach@1334:                         min = (byte) n;
jtulach@1334:                     else if (min >= 0 && sec < 0)
jtulach@1334:                         sec = (byte) n;
jtulach@1334:                     else if (mday < 0)
jtulach@1334:                         mday = (byte) n;
jtulach@1334:                     // Handle two-digit years < 70 (70-99 handled above).
jtulach@1334:                     else if (year == Integer.MIN_VALUE && mon >= 0 && mday >= 0)
jtulach@1334:                         year = n;
jtulach@1334:                     else
jtulach@1334:                         break syntax;
jtulach@1334:                     prevc = 0;
jtulach@1334:                 } else if (c == '/' || c == ':' || c == '+' || c == '-')
jtulach@1334:                     prevc = c;
jtulach@1334:                 else {
jtulach@1334:                     int st = i - 1;
jtulach@1334:                     while (i < limit) {
jtulach@1334:                         c = s.charAt(i);
jtulach@1334:                         if (!('A' <= c && c <= 'Z' || 'a' <= c && c <= 'z'))
jtulach@1334:                             break;
jtulach@1334:                         i++;
jtulach@1334:                     }
jtulach@1334:                     if (i <= st + 1)
jtulach@1334:                         break syntax;
jtulach@1334:                     int k;
jtulach@1334:                     for (k = wtb.length; --k >= 0;)
jtulach@1334:                         if (wtb[k].regionMatches(true, 0, s, st, i - st)) {
jtulach@1334:                             int action = ttb[k];
jtulach@1334:                             if (action != 0) {
jtulach@1334:                                 if (action == 1) {  // pm
jtulach@1334:                                     if (hour > 12 || hour < 1)
jtulach@1334:                                         break syntax;
jtulach@1334:                                     else if (hour < 12)
jtulach@1334:                                         hour += 12;
jtulach@1334:                                 } else if (action == 14) {  // am
jtulach@1334:                                     if (hour > 12 || hour < 1)
jtulach@1334:                                         break syntax;
jtulach@1334:                                     else if (hour == 12)
jtulach@1334:                                         hour = 0;
jtulach@1334:                                 } else if (action <= 13) {  // month!
jtulach@1334:                                     if (mon < 0)
jtulach@1334:                                         mon = (byte) (action - 2);
jtulach@1334:                                     else
jtulach@1334:                                         break syntax;
jtulach@1334:                                 } else {
jtulach@1334:                                     tzoffset = action - 10000;
jtulach@1334:                                 }
jtulach@1334:                             }
jtulach@1334:                             break;
jtulach@1334:                         }
jtulach@1334:                     if (k < 0)
jtulach@1334:                         break syntax;
jtulach@1334:                     prevc = 0;
jtulach@1334:                 }
jtulach@1334:             }
jtulach@1334:             if (year == Integer.MIN_VALUE || mon < 0 || mday < 0)
jtulach@1334:                 break syntax;
jtulach@1334:             // Parse 2-digit years within the correct default century.
jtulach@1334:             if (year < 100) {
jtulach@1334:                 synchronized (Date.class) {
jtulach@1334:                     if (defaultCenturyStart == 0) {
jtulach@1334:                         defaultCenturyStart = gcal.getCalendarDate().getYear() - 80;
jtulach@1334:                     }
jtulach@1334:                 }
jtulach@1334:                 year += (defaultCenturyStart / 100) * 100;
jtulach@1334:                 if (year < defaultCenturyStart) year += 100;
jtulach@1334:             }
jtulach@1334:             if (sec < 0)
jtulach@1334:                 sec = 0;
jtulach@1334:             if (min < 0)
jtulach@1334:                 min = 0;
jtulach@1334:             if (hour < 0)
jtulach@1334:                 hour = 0;
jtulach@1334:             BaseCalendar cal = getCalendarSystem(year);
jtulach@1334:             if (tzoffset == -1)  { // no time zone specified, have to use local
jtulach@1334:                 BaseCalendar.Date ldate = (BaseCalendar.Date) cal.newCalendarDate(TimeZone.getDefaultRef());
jtulach@1334:                 ldate.setDate(year, mon + 1, mday);
jtulach@1334:                 ldate.setTimeOfDay(hour, min, sec, 0);
jtulach@1334:                 return cal.getTime(ldate);
jtulach@1334:             }
jtulach@1334:             BaseCalendar.Date udate = (BaseCalendar.Date) cal.newCalendarDate(null); // no time zone
jtulach@1334:             udate.setDate(year, mon + 1, mday);
jtulach@1334:             udate.setTimeOfDay(hour, min, sec, 0);
jtulach@1334:             return cal.getTime(udate) + tzoffset * (60 * 1000);
jtulach@1334:         }
jtulach@1334:         // syntax error
jtulach@1334:         throw new IllegalArgumentException();
jtulach@1334:     }
jtulach@1334:     private final static String wtb[] = {
jtulach@1334:         "am", "pm",
jtulach@1334:         "monday", "tuesday", "wednesday", "thursday", "friday",
jtulach@1334:         "saturday", "sunday",
jtulach@1334:         "january", "february", "march", "april", "may", "june",
jtulach@1334:         "july", "august", "september", "october", "november", "december",
jtulach@1334:         "gmt", "ut", "utc", "est", "edt", "cst", "cdt",
jtulach@1334:         "mst", "mdt", "pst", "pdt"
jtulach@1334:     };
jtulach@1334:     private final static int ttb[] = {
jtulach@1334:         14, 1, 0, 0, 0, 0, 0, 0, 0,
jtulach@1334:         2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
jtulach@1334:         10000 + 0, 10000 + 0, 10000 + 0,    // GMT/UT/UTC
jtulach@1334:         10000 + 5 * 60, 10000 + 4 * 60,     // EST/EDT
jtulach@1334:         10000 + 6 * 60, 10000 + 5 * 60,     // CST/CDT
jtulach@1334:         10000 + 7 * 60, 10000 + 6 * 60,     // MST/MDT
jtulach@1334:         10000 + 8 * 60, 10000 + 7 * 60      // PST/PDT
jtulach@1334:     };
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns a value that is the result of subtracting 1900 from the
jtulach@1334:      * year that contains or begins with the instant in time represented
jtulach@1334:      * by this <code>Date</code> object, as interpreted in the local
jtulach@1334:      * time zone.
jtulach@1334:      *
jtulach@1334:      * @return  the year represented by this date, minus 1900.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.get(Calendar.YEAR) - 1900</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public int getYear() {
jtulach@1334:         return normalize().getYear() - 1900;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Sets the year of this <tt>Date</tt> object to be the specified
jtulach@1334:      * value plus 1900. This <code>Date</code> object is modified so
jtulach@1334:      * that it represents a point in time within the specified year,
jtulach@1334:      * with the month, date, hour, minute, and second the same as
jtulach@1334:      * before, as interpreted in the local time zone. (Of course, if
jtulach@1334:      * the date was February 29, for example, and the year is set to a
jtulach@1334:      * non-leap year, then the new date will be treated as if it were
jtulach@1334:      * on March 1.)
jtulach@1334:      *
jtulach@1334:      * @param   year    the year value.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.set(Calendar.YEAR, year + 1900)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public void setYear(int year) {
jtulach@1334:         getCalendarDate().setNormalizedYear(year + 1900);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns a number representing the month that contains or begins
jtulach@1334:      * with the instant in time represented by this <tt>Date</tt> object.
jtulach@1334:      * The value returned is between <code>0</code> and <code>11</code>,
jtulach@1334:      * with the value <code>0</code> representing January.
jtulach@1334:      *
jtulach@1334:      * @return  the month represented by this date.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.get(Calendar.MONTH)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public int getMonth() {
jtulach@1334:         return normalize().getMonth() - 1; // adjust 1-based to 0-based
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Sets the month of this date to the specified value. This
jtulach@1334:      * <tt>Date</tt> object is modified so that it represents a point
jtulach@1334:      * in time within the specified month, with the year, date, hour,
jtulach@1334:      * minute, and second the same as before, as interpreted in the
jtulach@1334:      * local time zone. If the date was October 31, for example, and
jtulach@1334:      * the month is set to June, then the new date will be treated as
jtulach@1334:      * if it were on July 1, because June has only 30 days.
jtulach@1334:      *
jtulach@1334:      * @param   month   the month value between 0-11.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.set(Calendar.MONTH, int month)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public void setMonth(int month) {
jtulach@1334:         int y = 0;
jtulach@1334:         if (month >= 12) {
jtulach@1334:             y = month / 12;
jtulach@1334:             month %= 12;
jtulach@1334:         } else if (month < 0) {
jtulach@1334:             y = CalendarUtils.floorDivide(month, 12);
jtulach@1334:             month = CalendarUtils.mod(month, 12);
jtulach@1334:         }
jtulach@1334:         BaseCalendar.Date d = getCalendarDate();
jtulach@1334:         if (y != 0) {
jtulach@1334:             d.setNormalizedYear(d.getNormalizedYear() + y);
jtulach@1334:         }
jtulach@1334:         d.setMonth(month + 1); // adjust 0-based to 1-based month numbering
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns the day of the month represented by this <tt>Date</tt> object.
jtulach@1334:      * The value returned is between <code>1</code> and <code>31</code>
jtulach@1334:      * representing the day of the month that contains or begins with the
jtulach@1334:      * instant in time represented by this <tt>Date</tt> object, as
jtulach@1334:      * interpreted in the local time zone.
jtulach@1334:      *
jtulach@1334:      * @return  the day of the month represented by this date.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.get(Calendar.DAY_OF_MONTH)</code>.
jtulach@1334:      * @deprecated
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public int getDate() {
jtulach@1334:         return normalize().getDayOfMonth();
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Sets the day of the month of this <tt>Date</tt> object to the
jtulach@1334:      * specified value. This <tt>Date</tt> object is modified so that
jtulach@1334:      * it represents a point in time within the specified day of the
jtulach@1334:      * month, with the year, month, hour, minute, and second the same
jtulach@1334:      * as before, as interpreted in the local time zone. If the date
jtulach@1334:      * was April 30, for example, and the date is set to 31, then it
jtulach@1334:      * will be treated as if it were on May 1, because April has only
jtulach@1334:      * 30 days.
jtulach@1334:      *
jtulach@1334:      * @param   date   the day of the month value between 1-31.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.set(Calendar.DAY_OF_MONTH, int date)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public void setDate(int date) {
jtulach@1334:         getCalendarDate().setDayOfMonth(date);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns the day of the week represented by this date. The
jtulach@1334:      * returned value (<tt>0</tt> = Sunday, <tt>1</tt> = Monday,
jtulach@1334:      * <tt>2</tt> = Tuesday, <tt>3</tt> = Wednesday, <tt>4</tt> =
jtulach@1334:      * Thursday, <tt>5</tt> = Friday, <tt>6</tt> = Saturday)
jtulach@1334:      * represents the day of the week that contains or begins with
jtulach@1334:      * the instant in time represented by this <tt>Date</tt> object,
jtulach@1334:      * as interpreted in the local time zone.
jtulach@1334:      *
jtulach@1334:      * @return  the day of the week represented by this date.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.get(Calendar.DAY_OF_WEEK)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public int getDay() {
jtulach@1334:         return normalize().getDayOfWeek() - gcal.SUNDAY;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns the hour represented by this <tt>Date</tt> object. The
jtulach@1334:      * returned value is a number (<tt>0</tt> through <tt>23</tt>)
jtulach@1334:      * representing the hour within the day that contains or begins
jtulach@1334:      * with the instant in time represented by this <tt>Date</tt>
jtulach@1334:      * object, as interpreted in the local time zone.
jtulach@1334:      *
jtulach@1334:      * @return  the hour represented by this date.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.get(Calendar.HOUR_OF_DAY)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public int getHours() {
jtulach@1334:         return normalize().getHours();
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Sets the hour of this <tt>Date</tt> object to the specified value.
jtulach@1334:      * This <tt>Date</tt> object is modified so that it represents a point
jtulach@1334:      * in time within the specified hour of the day, with the year, month,
jtulach@1334:      * date, minute, and second the same as before, as interpreted in the
jtulach@1334:      * local time zone.
jtulach@1334:      *
jtulach@1334:      * @param   hours   the hour value.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.set(Calendar.HOUR_OF_DAY, int hours)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public void setHours(int hours) {
jtulach@1334:         getCalendarDate().setHours(hours);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns the number of minutes past the hour represented by this date,
jtulach@1334:      * as interpreted in the local time zone.
jtulach@1334:      * The value returned is between <code>0</code> and <code>59</code>.
jtulach@1334:      *
jtulach@1334:      * @return  the number of minutes past the hour represented by this date.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.get(Calendar.MINUTE)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public int getMinutes() {
jtulach@1334:         return normalize().getMinutes();
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Sets the minutes of this <tt>Date</tt> object to the specified value.
jtulach@1334:      * This <tt>Date</tt> object is modified so that it represents a point
jtulach@1334:      * in time within the specified minute of the hour, with the year, month,
jtulach@1334:      * date, hour, and second the same as before, as interpreted in the
jtulach@1334:      * local time zone.
jtulach@1334:      *
jtulach@1334:      * @param   minutes   the value of the minutes.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.set(Calendar.MINUTE, int minutes)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public void setMinutes(int minutes) {
jtulach@1334:         getCalendarDate().setMinutes(minutes);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns the number of seconds past the minute represented by this date.
jtulach@1334:      * The value returned is between <code>0</code> and <code>61</code>. The
jtulach@1334:      * values <code>60</code> and <code>61</code> can only occur on those
jtulach@1334:      * Java Virtual Machines that take leap seconds into account.
jtulach@1334:      *
jtulach@1334:      * @return  the number of seconds past the minute represented by this date.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.get(Calendar.SECOND)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public int getSeconds() {
jtulach@1334:         return normalize().getSeconds();
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Sets the seconds of this <tt>Date</tt> to the specified value.
jtulach@1334:      * This <tt>Date</tt> object is modified so that it represents a
jtulach@1334:      * point in time within the specified second of the minute, with
jtulach@1334:      * the year, month, date, hour, and minute the same as before, as
jtulach@1334:      * interpreted in the local time zone.
jtulach@1334:      *
jtulach@1334:      * @param   seconds   the seconds value.
jtulach@1334:      * @see     java.util.Calendar
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>Calendar.set(Calendar.SECOND, int seconds)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public void setSeconds(int seconds) {
jtulach@1334:         getCalendarDate().setSeconds(seconds);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT
jtulach@1334:      * represented by this <tt>Date</tt> object.
jtulach@1334:      *
jtulach@1334:      * @return  the number of milliseconds since January 1, 1970, 00:00:00 GMT
jtulach@1334:      *          represented by this date.
jtulach@1334:      */
jtulach@1334:     public long getTime() {
jtulach@1334:         return getTimeImpl();
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     private final long getTimeImpl() {
jtulach@1334:         if (cdate != null && !cdate.isNormalized()) {
jtulach@1334:             normalize();
jtulach@1334:         }
jtulach@1334:         return fastTime;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Sets this <code>Date</code> object to represent a point in time that is
jtulach@1334:      * <code>time</code> milliseconds after January 1, 1970 00:00:00 GMT.
jtulach@1334:      *
jtulach@1334:      * @param   time   the number of milliseconds.
jtulach@1334:      */
jtulach@1334:     public void setTime(long time) {
jtulach@1334:         fastTime = time;
jtulach@1334:         cdate = null;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Tests if this date is before the specified date.
jtulach@1334:      *
jtulach@1334:      * @param   when   a date.
jtulach@1334:      * @return  <code>true</code> if and only if the instant of time
jtulach@1334:      *            represented by this <tt>Date</tt> object is strictly
jtulach@1334:      *            earlier than the instant represented by <tt>when</tt>;
jtulach@1334:      *          <code>false</code> otherwise.
jtulach@1334:      * @exception NullPointerException if <code>when</code> is null.
jtulach@1334:      */
jtulach@1334:     public boolean before(Date when) {
jtulach@1334:         return getMillisOf(this) < getMillisOf(when);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Tests if this date is after the specified date.
jtulach@1334:      *
jtulach@1334:      * @param   when   a date.
jtulach@1334:      * @return  <code>true</code> if and only if the instant represented
jtulach@1334:      *          by this <tt>Date</tt> object is strictly later than the
jtulach@1334:      *          instant represented by <tt>when</tt>;
jtulach@1334:      *          <code>false</code> otherwise.
jtulach@1334:      * @exception NullPointerException if <code>when</code> is null.
jtulach@1334:      */
jtulach@1334:     public boolean after(Date when) {
jtulach@1334:         return getMillisOf(this) > getMillisOf(when);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Compares two dates for equality.
jtulach@1334:      * The result is <code>true</code> if and only if the argument is
jtulach@1334:      * not <code>null</code> and is a <code>Date</code> object that
jtulach@1334:      * represents the same point in time, to the millisecond, as this object.
jtulach@1334:      * <p>
jtulach@1334:      * Thus, two <code>Date</code> objects are equal if and only if the
jtulach@1334:      * <code>getTime</code> method returns the same <code>long</code>
jtulach@1334:      * value for both.
jtulach@1334:      *
jtulach@1334:      * @param   obj   the object to compare with.
jtulach@1334:      * @return  <code>true</code> if the objects are the same;
jtulach@1334:      *          <code>false</code> otherwise.
jtulach@1334:      * @see     java.util.Date#getTime()
jtulach@1334:      */
jtulach@1334:     public boolean equals(Object obj) {
jtulach@1334:         return obj instanceof Date && getTime() == ((Date) obj).getTime();
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns the millisecond value of this <code>Date</code> object
jtulach@1334:      * without affecting its internal state.
jtulach@1334:      */
jtulach@1334:     static final long getMillisOf(Date date) {
jtulach@1334:         if (date.cdate == null || date.cdate.isNormalized()) {
jtulach@1334:             return date.fastTime;
jtulach@1334:         }
jtulach@1334:         BaseCalendar.Date d = (BaseCalendar.Date) date.cdate.clone();
jtulach@1334:         return gcal.getTime(d);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Compares two Dates for ordering.
jtulach@1334:      *
jtulach@1334:      * @param   anotherDate   the <code>Date</code> to be compared.
jtulach@1334:      * @return  the value <code>0</code> if the argument Date is equal to
jtulach@1334:      *          this Date; a value less than <code>0</code> if this Date
jtulach@1334:      *          is before the Date argument; and a value greater than
jtulach@1334:      *      <code>0</code> if this Date is after the Date argument.
jtulach@1334:      * @since   1.2
jtulach@1334:      * @exception NullPointerException if <code>anotherDate</code> is null.
jtulach@1334:      */
jtulach@1334:     public int compareTo(Date anotherDate) {
jtulach@1334:         long thisTime = getMillisOf(this);
jtulach@1334:         long anotherTime = getMillisOf(anotherDate);
jtulach@1334:         return (thisTime<anotherTime ? -1 : (thisTime==anotherTime ? 0 : 1));
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns a hash code value for this object. The result is the
jtulach@1334:      * exclusive OR of the two halves of the primitive <tt>long</tt>
jtulach@1334:      * value returned by the {@link Date#getTime}
jtulach@1334:      * method. That is, the hash code is the value of the expression:
jtulach@1334:      * <blockquote><pre>
jtulach@1334:      * (int)(this.getTime()^(this.getTime() >>> 32))</pre></blockquote>
jtulach@1334:      *
jtulach@1334:      * @return  a hash code value for this object.
jtulach@1334:      */
jtulach@1334:     public int hashCode() {
jtulach@1334:         long ht = this.getTime();
jtulach@1334:         return (int) ht ^ (int) (ht >> 32);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Converts this <code>Date</code> object to a <code>String</code>
jtulach@1334:      * of the form:
jtulach@1334:      * <blockquote><pre>
jtulach@1334:      * dow mon dd hh:mm:ss zzz yyyy</pre></blockquote>
jtulach@1334:      * where:<ul>
jtulach@1334:      * <li><tt>dow</tt> is the day of the week (<tt>Sun, Mon, Tue, Wed,
jtulach@1334:      *     Thu, Fri, Sat</tt>).
jtulach@1334:      * <li><tt>mon</tt> is the month (<tt>Jan, Feb, Mar, Apr, May, Jun,
jtulach@1334:      *     Jul, Aug, Sep, Oct, Nov, Dec</tt>).
jtulach@1334:      * <li><tt>dd</tt> is the day of the month (<tt>01</tt> through
jtulach@1334:      *     <tt>31</tt>), as two decimal digits.
jtulach@1334:      * <li><tt>hh</tt> is the hour of the day (<tt>00</tt> through
jtulach@1334:      *     <tt>23</tt>), as two decimal digits.
jtulach@1334:      * <li><tt>mm</tt> is the minute within the hour (<tt>00</tt> through
jtulach@1334:      *     <tt>59</tt>), as two decimal digits.
jtulach@1334:      * <li><tt>ss</tt> is the second within the minute (<tt>00</tt> through
jtulach@1334:      *     <tt>61</tt>, as two decimal digits.
jtulach@1334:      * <li><tt>zzz</tt> is the time zone (and may reflect daylight saving
jtulach@1334:      *     time). Standard time zone abbreviations include those
jtulach@1334:      *     recognized by the method <tt>parse</tt>. If time zone
jtulach@1334:      *     information is not available, then <tt>zzz</tt> is empty -
jtulach@1334:      *     that is, it consists of no characters at all.
jtulach@1334:      * <li><tt>yyyy</tt> is the year, as four decimal digits.
jtulach@1334:      * </ul>
jtulach@1334:      *
jtulach@1334:      * @return  a string representation of this date.
jtulach@1334:      * @see     java.util.Date#toLocaleString()
jtulach@1334:      * @see     java.util.Date#toGMTString()
jtulach@1334:      */
jtulach@1334:     public String toString() {
jtulach@1334:         // "EEE MMM dd HH:mm:ss zzz yyyy";
jtulach@1334:         BaseCalendar.Date date = normalize();
jtulach@1334:         StringBuilder sb = new StringBuilder(28);
jtulach@1334:         int index = date.getDayOfWeek();
jtulach@1334:         if (index == gcal.SUNDAY) {
jtulach@1334:             index = 8;
jtulach@1334:         }
jtulach@1334:         convertToAbbr(sb, wtb[index]).append(' ');                        // EEE
jtulach@1334:         convertToAbbr(sb, wtb[date.getMonth() - 1 + 2 + 7]).append(' ');  // MMM
jtulach@1334:         CalendarUtils.sprintf0d(sb, date.getDayOfMonth(), 2).append(' '); // dd
jtulach@1334: 
jtulach@1334:         CalendarUtils.sprintf0d(sb, date.getHours(), 2).append(':');   // HH
jtulach@1334:         CalendarUtils.sprintf0d(sb, date.getMinutes(), 2).append(':'); // mm
jtulach@1334:         CalendarUtils.sprintf0d(sb, date.getSeconds(), 2).append(' '); // ss
jtulach@1334:         TimeZone zi = date.getZone();
jtulach@1334:         if (zi != null) {
jtulach@1334:             sb.append(zi.getDisplayName(date.isDaylightTime(), zi.SHORT, Locale.US)); // zzz
jtulach@1334:         } else {
jtulach@1334:             sb.append("GMT");
jtulach@1334:         }
jtulach@1334:         sb.append(' ').append(date.getYear());  // yyyy
jtulach@1334:         return sb.toString();
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Converts the given name to its 3-letter abbreviation (e.g.,
jtulach@1334:      * "monday" -> "Mon") and stored the abbreviation in the given
jtulach@1334:      * <code>StringBuilder</code>.
jtulach@1334:      */
jtulach@1334:     private static final StringBuilder convertToAbbr(StringBuilder sb, String name) {
jtulach@1334:         sb.append(Character.toUpperCase(name.charAt(0)));
jtulach@1334:         sb.append(name.charAt(1)).append(name.charAt(2));
jtulach@1334:         return sb;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Creates a string representation of this <tt>Date</tt> object in an
jtulach@1334:      * implementation-dependent form. The intent is that the form should
jtulach@1334:      * be familiar to the user of the Java application, wherever it may
jtulach@1334:      * happen to be running. The intent is comparable to that of the
jtulach@1334:      * "<code>%c</code>" format supported by the <code>strftime()</code>
jtulach@1334:      * function of ISO&nbsp;C.
jtulach@1334:      *
jtulach@1334:      * @return  a string representation of this date, using the locale
jtulach@1334:      *          conventions.
jtulach@1334:      * @see     java.text.DateFormat
jtulach@1334:      * @see     java.util.Date#toString()
jtulach@1334:      * @see     java.util.Date#toGMTString()
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>DateFormat.format(Date date)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public String toLocaleString() {
jtulach@1334:         DateFormat formatter = DateFormat.getDateTimeInstance();
jtulach@1334:         return formatter.format(this);
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Creates a string representation of this <tt>Date</tt> object of
jtulach@1334:      * the form:
jtulach@1334:      * <blockquote<pre>
jtulach@1334:      * d mon yyyy hh:mm:ss GMT</pre></blockquote>
jtulach@1334:      * where:<ul>
jtulach@1334:      * <li><i>d</i> is the day of the month (<tt>1</tt> through <tt>31</tt>),
jtulach@1334:      *     as one or two decimal digits.
jtulach@1334:      * <li><i>mon</i> is the month (<tt>Jan, Feb, Mar, Apr, May, Jun, Jul,
jtulach@1334:      *     Aug, Sep, Oct, Nov, Dec</tt>).
jtulach@1334:      * <li><i>yyyy</i> is the year, as four decimal digits.
jtulach@1334:      * <li><i>hh</i> is the hour of the day (<tt>00</tt> through <tt>23</tt>),
jtulach@1334:      *     as two decimal digits.
jtulach@1334:      * <li><i>mm</i> is the minute within the hour (<tt>00</tt> through
jtulach@1334:      *     <tt>59</tt>), as two decimal digits.
jtulach@1334:      * <li><i>ss</i> is the second within the minute (<tt>00</tt> through
jtulach@1334:      *     <tt>61</tt>), as two decimal digits.
jtulach@1334:      * <li><i>GMT</i> is exactly the ASCII letters "<tt>GMT</tt>" to indicate
jtulach@1334:      *     Greenwich Mean Time.
jtulach@1334:      * </ul><p>
jtulach@1334:      * The result does not depend on the local time zone.
jtulach@1334:      *
jtulach@1334:      * @return  a string representation of this date, using the Internet GMT
jtulach@1334:      *          conventions.
jtulach@1334:      * @see     java.text.DateFormat
jtulach@1334:      * @see     java.util.Date#toString()
jtulach@1334:      * @see     java.util.Date#toLocaleString()
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>DateFormat.format(Date date)</code>, using a
jtulach@1334:      * GMT <code>TimeZone</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public String toGMTString() {
jtulach@1334:         // d MMM yyyy HH:mm:ss 'GMT'
jtulach@1334:         long t = getTime();
jtulach@1334:         BaseCalendar cal = getCalendarSystem(t);
jtulach@1334:         BaseCalendar.Date date =
jtulach@1334:             (BaseCalendar.Date) cal.getCalendarDate(getTime(), (TimeZone)null);
jtulach@1334:         StringBuilder sb = new StringBuilder(32);
jtulach@1334:         CalendarUtils.sprintf0d(sb, date.getDayOfMonth(), 1).append(' '); // d
jtulach@1334:         convertToAbbr(sb, wtb[date.getMonth() - 1 + 2 + 7]).append(' ');  // MMM
jtulach@1334:         sb.append(date.getYear()).append(' ');                            // yyyy
jtulach@1334:         CalendarUtils.sprintf0d(sb, date.getHours(), 2).append(':');      // HH
jtulach@1334:         CalendarUtils.sprintf0d(sb, date.getMinutes(), 2).append(':');    // mm
jtulach@1334:         CalendarUtils.sprintf0d(sb, date.getSeconds(), 2);                // ss
jtulach@1334:         sb.append(" GMT");                                                // ' GMT'
jtulach@1334:         return sb.toString();
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns the offset, measured in minutes, for the local time zone
jtulach@1334:      * relative to UTC that is appropriate for the time represented by
jtulach@1334:      * this <code>Date</code> object.
jtulach@1334:      * <p>
jtulach@1334:      * For example, in Massachusetts, five time zones west of Greenwich:
jtulach@1334:      * <blockquote><pre>
jtulach@1334:      * new Date(96, 1, 14).getTimezoneOffset() returns 300</pre></blockquote>
jtulach@1334:      * because on February 14, 1996, standard time (Eastern Standard Time)
jtulach@1334:      * is in use, which is offset five hours from UTC; but:
jtulach@1334:      * <blockquote><pre>
jtulach@1334:      * new Date(96, 5, 1).getTimezoneOffset() returns 240</pre></blockquote>
jtulach@1334:      * because on June 1, 1996, daylight saving time (Eastern Daylight Time)
jtulach@1334:      * is in use, which is offset only four hours from UTC.<p>
jtulach@1334:      * This method produces the same result as if it computed:
jtulach@1334:      * <blockquote><pre>
jtulach@1334:      * (this.getTime() - UTC(this.getYear(),
jtulach@1334:      *                       this.getMonth(),
jtulach@1334:      *                       this.getDate(),
jtulach@1334:      *                       this.getHours(),
jtulach@1334:      *                       this.getMinutes(),
jtulach@1334:      *                       this.getSeconds())) / (60 * 1000)
jtulach@1334:      * </pre></blockquote>
jtulach@1334:      *
jtulach@1334:      * @return  the time-zone offset, in minutes, for the current time zone.
jtulach@1334:      * @see     java.util.Calendar#ZONE_OFFSET
jtulach@1334:      * @see     java.util.Calendar#DST_OFFSET
jtulach@1334:      * @see     java.util.TimeZone#getDefault
jtulach@1334:      * @deprecated As of JDK version 1.1,
jtulach@1334:      * replaced by <code>-(Calendar.get(Calendar.ZONE_OFFSET) +
jtulach@1334:      * Calendar.get(Calendar.DST_OFFSET)) / (60 * 1000)</code>.
jtulach@1334:      */
jtulach@1334:     @Deprecated
jtulach@1334:     public int getTimezoneOffset() {
jtulach@1334:         int zoneOffset;
jtulach@1334:         if (cdate == null) {
jtulach@1334:             TimeZone tz = TimeZone.getDefaultRef();
jtulach@1334:             if (tz instanceof ZoneInfo) {
jtulach@1334:                 zoneOffset = ((ZoneInfo)tz).getOffsets(fastTime, null);
jtulach@1334:             } else {
jtulach@1334:                 zoneOffset = tz.getOffset(fastTime);
jtulach@1334:             }
jtulach@1334:         } else {
jtulach@1334:             normalize();
jtulach@1334:             zoneOffset = cdate.getZoneOffset();
jtulach@1334:         }
jtulach@1334:         return -zoneOffset/60000;  // convert to minutes
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     private final BaseCalendar.Date getCalendarDate() {
jtulach@1334:         if (cdate == null) {
jtulach@1334:             BaseCalendar cal = getCalendarSystem(fastTime);
jtulach@1334:             cdate = (BaseCalendar.Date) cal.getCalendarDate(fastTime,
jtulach@1334:                                                             TimeZone.getDefaultRef());
jtulach@1334:         }
jtulach@1334:         return cdate;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     private final BaseCalendar.Date normalize() {
jtulach@1334:         if (cdate == null) {
jtulach@1334:             BaseCalendar cal = getCalendarSystem(fastTime);
jtulach@1334:             cdate = (BaseCalendar.Date) cal.getCalendarDate(fastTime,
jtulach@1334:                                                             TimeZone.getDefaultRef());
jtulach@1334:             return cdate;
jtulach@1334:         }
jtulach@1334: 
jtulach@1334:         // Normalize cdate with the TimeZone in cdate first. This is
jtulach@1334:         // required for the compatible behavior.
jtulach@1334:         if (!cdate.isNormalized()) {
jtulach@1334:             cdate = normalize(cdate);
jtulach@1334:         }
jtulach@1334: 
jtulach@1334:         // If the default TimeZone has changed, then recalculate the
jtulach@1334:         // fields with the new TimeZone.
jtulach@1334:         TimeZone tz = TimeZone.getDefaultRef();
jtulach@1334:         if (tz != cdate.getZone()) {
jtulach@1334:             cdate.setZone(tz);
jtulach@1334:             CalendarSystem cal = getCalendarSystem(cdate);
jtulach@1334:             cal.getCalendarDate(fastTime, cdate);
jtulach@1334:         }
jtulach@1334:         return cdate;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     // fastTime and the returned data are in sync upon return.
jtulach@1334:     private final BaseCalendar.Date normalize(BaseCalendar.Date date) {
jtulach@1334:         int y = date.getNormalizedYear();
jtulach@1334:         int m = date.getMonth();
jtulach@1334:         int d = date.getDayOfMonth();
jtulach@1334:         int hh = date.getHours();
jtulach@1334:         int mm = date.getMinutes();
jtulach@1334:         int ss = date.getSeconds();
jtulach@1334:         int ms = date.getMillis();
jtulach@1334:         TimeZone tz = date.getZone();
jtulach@1334: 
jtulach@1334:         // If the specified year can't be handled using a long value
jtulach@1334:         // in milliseconds, GregorianCalendar is used for full
jtulach@1334:         // compatibility with underflow and overflow. This is required
jtulach@1334:         // by some JCK tests. The limits are based max year values -
jtulach@1334:         // years that can be represented by max values of d, hh, mm,
jtulach@1334:         // ss and ms. Also, let GregorianCalendar handle the default
jtulach@1334:         // cutover year so that we don't need to worry about the
jtulach@1334:         // transition here.
jtulach@1334:         if (y == 1582 || y > 280000000 || y < -280000000) {
jtulach@1334:             if (tz == null) {
jtulach@1334:                 tz = TimeZone.getTimeZone("GMT");
jtulach@1334:             }
jtulach@1334:             GregorianCalendar gc = new GregorianCalendar(tz);
jtulach@1334:             gc.clear();
jtulach@1334:             gc.set(gc.MILLISECOND, ms);
jtulach@1334:             gc.set(y, m-1, d, hh, mm, ss);
jtulach@1334:             fastTime = gc.getTimeInMillis();
jtulach@1334:             BaseCalendar cal = getCalendarSystem(fastTime);
jtulach@1334:             date = (BaseCalendar.Date) cal.getCalendarDate(fastTime, tz);
jtulach@1334:             return date;
jtulach@1334:         }
jtulach@1334: 
jtulach@1334:         BaseCalendar cal = getCalendarSystem(y);
jtulach@1334:         if (cal != getCalendarSystem(date)) {
jtulach@1334:             date = (BaseCalendar.Date) cal.newCalendarDate(tz);
jtulach@1334:             date.setNormalizedDate(y, m, d).setTimeOfDay(hh, mm, ss, ms);
jtulach@1334:         }
jtulach@1334:         // Perform the GregorianCalendar-style normalization.
jtulach@1334:         fastTime = cal.getTime(date);
jtulach@1334: 
jtulach@1334:         // In case the normalized date requires the other calendar
jtulach@1334:         // system, we need to recalculate it using the other one.
jtulach@1334:         BaseCalendar ncal = getCalendarSystem(fastTime);
jtulach@1334:         if (ncal != cal) {
jtulach@1334:             date = (BaseCalendar.Date) ncal.newCalendarDate(tz);
jtulach@1334:             date.setNormalizedDate(y, m, d).setTimeOfDay(hh, mm, ss, ms);
jtulach@1334:             fastTime = ncal.getTime(date);
jtulach@1334:         }
jtulach@1334:         return date;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Returns the Gregorian or Julian calendar system to use with the
jtulach@1334:      * given date. Use Gregorian from October 15, 1582.
jtulach@1334:      *
jtulach@1334:      * @param year normalized calendar year (not -1900)
jtulach@1334:      * @return the CalendarSystem to use for the specified date
jtulach@1334:      */
jtulach@1334:     private static final BaseCalendar getCalendarSystem(int year) {
jtulach@1334:         if (year >= 1582) {
jtulach@1334:             return gcal;
jtulach@1334:         }
jtulach@1334:         return getJulianCalendar();
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     private static final BaseCalendar getCalendarSystem(long utc) {
jtulach@1334:         // Quickly check if the time stamp given by `utc' is the Epoch
jtulach@1334:         // or later. If it's before 1970, we convert the cutover to
jtulach@1334:         // local time to compare.
jtulach@1334:         if (utc >= 0
jtulach@1334:             || utc >= GregorianCalendar.DEFAULT_GREGORIAN_CUTOVER
jtulach@1334:                         - TimeZone.getDefaultRef().getOffset(utc)) {
jtulach@1334:             return gcal;
jtulach@1334:         }
jtulach@1334:         return getJulianCalendar();
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     private static final BaseCalendar getCalendarSystem(BaseCalendar.Date cdate) {
jtulach@1334:         if (jcal == null) {
jtulach@1334:             return gcal;
jtulach@1334:         }
jtulach@1334:         if (cdate.getEra() != null) {
jtulach@1334:             return jcal;
jtulach@1334:         }
jtulach@1334:         return gcal;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     synchronized private static final BaseCalendar getJulianCalendar() {
jtulach@1334:         if (jcal == null) {
jtulach@1334:             jcal = (BaseCalendar) CalendarSystem.forName("julian");
jtulach@1334:         }
jtulach@1334:         return jcal;
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Save the state of this object to a stream (i.e., serialize it).
jtulach@1334:      *
jtulach@1334:      * @serialData The value returned by <code>getTime()</code>
jtulach@1334:      *             is emitted (long).  This represents the offset from
jtulach@1334:      *             January 1, 1970, 00:00:00 GMT in milliseconds.
jtulach@1334:      */
jtulach@1334:     private void writeObject(ObjectOutputStream s)
jtulach@1334:          throws IOException
jtulach@1334:     {
jtulach@1334:         s.writeLong(getTimeImpl());
jtulach@1334:     }
jtulach@1334: 
jtulach@1334:     /**
jtulach@1334:      * Reconstitute this object from a stream (i.e., deserialize it).
jtulach@1334:      */
jtulach@1334:     private void readObject(ObjectInputStream s)
jtulach@1334:          throws IOException, ClassNotFoundException
jtulach@1334:     {
jtulach@1334:         fastTime = s.readLong();
jtulach@1334:     }
jtulach@1334: }