Date represents a specific instant
+ * in time, with millisecond precision.
+ *
+ * Prior to JDK 1.1, the class Date had two additional
+ * functions. It allowed the interpretation of dates as year, month, day, hour,
+ * minute, and second values. It also allowed the formatting and parsing
+ * of date strings. Unfortunately, the API for these functions was not
+ * amenable to internationalization. As of JDK 1.1, the
+ * Calendar class should be used to convert between dates and time
+ * fields and the DateFormat class should be used to format and
+ * parse date strings.
+ * The corresponding methods in Date are deprecated.
+ *
+ * Although the Date class is intended to reflect
+ * coordinated universal time (UTC), it may not do so exactly,
+ * depending on the host environment of the Java Virtual Machine.
+ * Nearly all modern operating systems assume that 1 day =
+ * 24 × 60 × 60 = 86400 seconds
+ * in all cases. In UTC, however, about once every year or two there
+ * is an extra second, called a "leap second." The leap
+ * second is always added as the last second of the day, and always
+ * on December 31 or June 30. For example, the last minute of the
+ * year 1995 was 61 seconds long, thanks to an added leap second.
+ * Most computer clocks are not accurate enough to be able to reflect
+ * the leap-second distinction.
+ *
+ * Some computer standards are defined in terms of Greenwich mean + * time (GMT), which is equivalent to universal time (UT). GMT is + * the "civil" name for the standard; UT is the + * "scientific" name for the same standard. The + * distinction between UTC and UT is that UTC is based on an atomic + * clock and UT is based on astronomical observations, which for all + * practical purposes is an invisibly fine hair to split. Because the + * earth's rotation is not uniform (it slows down and speeds up + * in complicated ways), UT does not always flow uniformly. Leap + * seconds are introduced as needed into UTC so as to keep UTC within + * 0.9 seconds of UT1, which is a version of UT with certain + * corrections applied. There are other time and date systems as + * well; for example, the time scale used by the satellite-based + * global positioning system (GPS) is synchronized to UTC but is + * not adjusted for leap seconds. An interesting source of + * further information is the U.S. Naval Observatory, particularly + * the Directorate of Time at: + *
+ *+ * http://tycho.usno.navy.mil + *
+ * and their definitions of "Systems of Time" at: + *
+ *+ * http://tycho.usno.navy.mil/systime.html + *
+ * In all methods of class Date that accept or return
+ * year, month, date, hours, minutes, and seconds values, the
+ * following representations are used:
+ *
- 1900.
+ *
+ * In all cases, arguments given to methods for these purposes need
+ * not fall within the indicated ranges; for example, a date may be
+ * specified as January 32 and is interpreted as meaning February 1.
+ *
+ * @author James Gosling
+ * @author Arthur van Hoff
+ * @author Alan Liu
+ * @see java.text.DateFormat
+ * @see java.util.Calendar
+ * @see java.util.TimeZone
+ * @since JDK1.0
+ */
+public class Date
+ implements java.io.Serializable, Cloneable, Comparable
+ * It accepts many syntaxes; in particular, it recognizes the IETF
+ * standard date syntax: "Sat, 12 Aug 1995 13:30:00 GMT". It also
+ * understands the continental U.S. time-zone abbreviations, but for
+ * general use, a time-zone offset should be used: "Sat, 12 Aug 1995
+ * 13:30:00 GMT+0430" (4 hours, 30 minutes west of the Greenwich
+ * meridian). If no time zone is specified, the local time zone is
+ * assumed. GMT and UTC are considered equivalent.
+ *
+ * The string s is processed from left to right, looking for
+ * data of interest. Any material in s that is within the
+ * ASCII parenthesis characters ( and ) is ignored.
+ * Parentheses may be nested. Otherwise, the only characters permitted
+ * within s are these ASCII characters:
+ *
+ * A consecutive sequence of decimal digits is treated as a decimal
+ * number:
+ * A consecutive sequence of letters is regarded as a word and treated
+ * as follows:
+ * Once the entire string s has been scanned, it is converted to a time
+ * result in one of two ways. If a time zone or time-zone offset has been
+ * recognized, then the year, month, day of month, hour, minute, and
+ * second are interpreted in UTC and then the time-zone offset is
+ * applied. Otherwise, the year, month, day of month, hour, minute, and
+ * second are interpreted in the local time zone.
+ *
+ * @param s a string to be parsed as a date.
+ * @return the number of milliseconds since January 1, 1970, 00:00:00 GMT
+ * represented by the string argument.
+ * @see java.text.DateFormat
+ * @deprecated As of JDK version 1.1,
+ * replaced by
+ * Thus, two
+ * The result does not depend on the local time zone.
+ *
+ * @return a string representation of this date, using the Internet GMT
+ * conventions.
+ * @see java.text.DateFormat
+ * @see java.util.Date#toString()
+ * @see java.util.Date#toLocaleString()
+ * @deprecated As of JDK version 1.1,
+ * replaced by
+ * For example, in Massachusetts, five time zones west of Greenwich:
+ *
+ * This method produces the same result as if it computed:
+ * Date object and initializes it so that
+ * it represents the time at which it was allocated, measured to the
+ * nearest millisecond.
+ *
+ * @see java.lang.System#currentTimeMillis()
+ */
+ public Date() {
+ this(System.currentTimeMillis());
+ }
+
+ /**
+ * Allocates a Date object and initializes it to
+ * represent the specified number of milliseconds since the
+ * standard base time known as "the epoch", namely January 1,
+ * 1970, 00:00:00 GMT.
+ *
+ * @param date the milliseconds since January 1, 1970, 00:00:00 GMT.
+ * @see java.lang.System#currentTimeMillis()
+ */
+ public Date(long date) {
+ fastTime = date;
+ }
+
+ /**
+ * Allocates a Date object and initializes it so that
+ * it represents midnight, local time, at the beginning of the day
+ * specified by the year, month, and
+ * date arguments.
+ *
+ * @param year the year minus 1900.
+ * @param month the month between 0-11.
+ * @param date the day of the month between 1-31.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.set(year + 1900, month, date)
+ * or GregorianCalendar(year + 1900, month, date).
+ */
+ @Deprecated
+ public Date(int year, int month, int date) {
+ this(year, month, date, 0, 0, 0);
+ }
+
+ /**
+ * Allocates a Date object and initializes it so that
+ * it represents the instant at the start of the minute specified by
+ * the year, month, date,
+ * hrs, and min arguments, in the local
+ * time zone.
+ *
+ * @param year the year minus 1900.
+ * @param month the month between 0-11.
+ * @param date the day of the month between 1-31.
+ * @param hrs the hours between 0-23.
+ * @param min the minutes between 0-59.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.set(year + 1900, month, date,
+ * hrs, min) or GregorianCalendar(year + 1900,
+ * month, date, hrs, min).
+ */
+ @Deprecated
+ public Date(int year, int month, int date, int hrs, int min) {
+ this(year, month, date, hrs, min, 0);
+ }
+
+ /**
+ * Allocates a Date object and initializes it so that
+ * it represents the instant at the start of the second specified
+ * by the year, month, date,
+ * hrs, min, and sec arguments,
+ * in the local time zone.
+ *
+ * @param year the year minus 1900.
+ * @param month the month between 0-11.
+ * @param date the day of the month between 1-31.
+ * @param hrs the hours between 0-23.
+ * @param min the minutes between 0-59.
+ * @param sec the seconds between 0-59.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.set(year + 1900, month, date,
+ * hrs, min, sec) or GregorianCalendar(year + 1900,
+ * month, date, hrs, min, sec).
+ */
+ @Deprecated
+ public Date(int year, int month, int date, int hrs, int min, int sec) {
+ int y = year + 1900;
+ // month is 0-based. So we have to normalize month to support Long.MAX_VALUE.
+ if (month >= 12) {
+ y += month / 12;
+ month %= 12;
+ } else if (month < 0) {
+ y += CalendarUtils.floorDivide(month, 12);
+ month = CalendarUtils.mod(month, 12);
+ }
+ BaseCalendar cal = getCalendarSystem(y);
+ cdate = (BaseCalendar.Date) cal.newCalendarDate(TimeZone.getDefaultRef());
+ cdate.setNormalizedDate(y, month + 1, date).setTimeOfDay(hrs, min, sec, 0);
+ getTimeImpl();
+ cdate = null;
+ }
+
+ /**
+ * Allocates a Date object and initializes it so that
+ * it represents the date and time indicated by the string
+ * s, which is interpreted as if by the
+ * {@link Date#parse} method.
+ *
+ * @param s a string representation of the date.
+ * @see java.text.DateFormat
+ * @see java.util.Date#parse(java.lang.String)
+ * @deprecated As of JDK version 1.1,
+ * replaced by DateFormat.parse(String s).
+ */
+ @Deprecated
+ public Date(String s) {
+ this(parse(s));
+ }
+
+ /**
+ * Return a copy of this object.
+ */
+ public Object clone() {
+ Date d = null;
+ try {
+ d = (Date)super.clone();
+ if (cdate != null) {
+ d.cdate = (BaseCalendar.Date) cdate.clone();
+ }
+ } catch (CloneNotSupportedException e) {} // Won't happen
+ return d;
+ }
+
+ /**
+ * Determines the date and time based on the arguments. The
+ * arguments are interpreted as a year, month, day of the month,
+ * hour of the day, minute within the hour, and second within the
+ * minute, exactly as for the Date constructor with six
+ * arguments, except that the arguments are interpreted relative
+ * to UTC rather than to the local time zone. The time indicated is
+ * returned represented as the distance, measured in milliseconds,
+ * of that time from the epoch (00:00:00 GMT on January 1, 1970).
+ *
+ * @param year the year minus 1900.
+ * @param month the month between 0-11.
+ * @param date the day of the month between 1-31.
+ * @param hrs the hours between 0-23.
+ * @param min the minutes between 0-59.
+ * @param sec the seconds between 0-59.
+ * @return the number of milliseconds since January 1, 1970, 00:00:00 GMT for
+ * the date and time specified by the arguments.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.set(year + 1900, month, date,
+ * hrs, min, sec) or GregorianCalendar(year + 1900,
+ * month, date, hrs, min, sec), using a UTC
+ * TimeZone, followed by Calendar.getTime().getTime().
+ */
+ @Deprecated
+ public static long UTC(int year, int month, int date,
+ int hrs, int min, int sec) {
+ int y = year + 1900;
+ // month is 0-based. So we have to normalize month to support Long.MAX_VALUE.
+ if (month >= 12) {
+ y += month / 12;
+ month %= 12;
+ } else if (month < 0) {
+ y += CalendarUtils.floorDivide(month, 12);
+ month = CalendarUtils.mod(month, 12);
+ }
+ int m = month + 1;
+ BaseCalendar cal = getCalendarSystem(y);
+ BaseCalendar.Date udate = (BaseCalendar.Date) cal.newCalendarDate(null);
+ udate.setNormalizedDate(y, m, date).setTimeOfDay(hrs, min, sec, 0);
+
+ // Use a Date instance to perform normalization. Its fastTime
+ // is the UTC value after the normalization.
+ Date d = new Date(0);
+ d.normalize(udate);
+ return d.fastTime;
+ }
+
+ /**
+ * Attempts to interpret the string s as a representation
+ * of a date and time. If the attempt is successful, the time
+ * indicated is returned represented as the distance, measured in
+ * milliseconds, of that time from the epoch (00:00:00 GMT on
+ * January 1, 1970). If the attempt fails, an
+ * IllegalArgumentException is thrown.
+ *
+ * and whitespace characters.
+ * abcdefghijklmnopqrstuvwxyz
+ * ABCDEFGHIJKLMNOPQRSTUVWXYZ
+ * 0123456789,+-:/
+ *
+ *
+ * If the recognized year number is less than 100, it is
+ * interpreted as an abbreviated year relative to a century of
+ * which dates are within 80 years before and 19 years after
+ * the time when the Date class is initialized.
+ * After adjusting the year number, 1900 is subtracted from
+ * it. For example, if the current year is 1999 then years in
+ * the range 19 to 99 are assumed to mean 1919 to 1999, while
+ * years from 0 to 18 are assumed to mean 2000 to 2018. Note
+ * that this is slightly different from the interpretation of
+ * years less than 100 that is used in {@link java.text.SimpleDateFormat}.
+ *
+ *
DateFormat.parse(String s).
+ */
+ @Deprecated
+ public static long parse(String s) {
+ int year = Integer.MIN_VALUE;
+ int mon = -1;
+ int mday = -1;
+ int hour = -1;
+ int min = -1;
+ int sec = -1;
+ int millis = -1;
+ int c = -1;
+ int i = 0;
+ int n = -1;
+ int wst = -1;
+ int tzoffset = -1;
+ int prevc = 0;
+ syntax:
+ {
+ if (s == null)
+ break syntax;
+ int limit = s.length();
+ while (i < limit) {
+ c = s.charAt(i);
+ i++;
+ if (c <= ' ' || c == ',')
+ continue;
+ if (c == '(') { // skip comments
+ int depth = 1;
+ while (i < limit) {
+ c = s.charAt(i);
+ i++;
+ if (c == '(') depth++;
+ else if (c == ')')
+ if (--depth <= 0)
+ break;
+ }
+ continue;
+ }
+ if ('0' <= c && c <= '9') {
+ n = c - '0';
+ while (i < limit && '0' <= (c = s.charAt(i)) && c <= '9') {
+ n = n * 10 + c - '0';
+ i++;
+ }
+ if (prevc == '+' || prevc == '-' && year != Integer.MIN_VALUE) {
+ // timezone offset
+ if (n < 24)
+ n = n * 60; // EG. "GMT-3"
+ else
+ n = n % 100 + n / 100 * 60; // eg "GMT-0430"
+ if (prevc == '+') // plus means east of GMT
+ n = -n;
+ if (tzoffset != 0 && tzoffset != -1)
+ break syntax;
+ tzoffset = n;
+ } else if (n >= 70)
+ if (year != Integer.MIN_VALUE)
+ break syntax;
+ else if (c <= ' ' || c == ',' || c == '/' || i >= limit)
+ // year = n < 1900 ? n : n - 1900;
+ year = n;
+ else
+ break syntax;
+ else if (c == ':')
+ if (hour < 0)
+ hour = (byte) n;
+ else if (min < 0)
+ min = (byte) n;
+ else
+ break syntax;
+ else if (c == '/')
+ if (mon < 0)
+ mon = (byte) (n - 1);
+ else if (mday < 0)
+ mday = (byte) n;
+ else
+ break syntax;
+ else if (i < limit && c != ',' && c > ' ' && c != '-')
+ break syntax;
+ else if (hour >= 0 && min < 0)
+ min = (byte) n;
+ else if (min >= 0 && sec < 0)
+ sec = (byte) n;
+ else if (mday < 0)
+ mday = (byte) n;
+ // Handle two-digit years < 70 (70-99 handled above).
+ else if (year == Integer.MIN_VALUE && mon >= 0 && mday >= 0)
+ year = n;
+ else
+ break syntax;
+ prevc = 0;
+ } else if (c == '/' || c == ':' || c == '+' || c == '-')
+ prevc = c;
+ else {
+ int st = i - 1;
+ while (i < limit) {
+ c = s.charAt(i);
+ if (!('A' <= c && c <= 'Z' || 'a' <= c && c <= 'z'))
+ break;
+ i++;
+ }
+ if (i <= st + 1)
+ break syntax;
+ int k;
+ for (k = wtb.length; --k >= 0;)
+ if (wtb[k].regionMatches(true, 0, s, st, i - st)) {
+ int action = ttb[k];
+ if (action != 0) {
+ if (action == 1) { // pm
+ if (hour > 12 || hour < 1)
+ break syntax;
+ else if (hour < 12)
+ hour += 12;
+ } else if (action == 14) { // am
+ if (hour > 12 || hour < 1)
+ break syntax;
+ else if (hour == 12)
+ hour = 0;
+ } else if (action <= 13) { // month!
+ if (mon < 0)
+ mon = (byte) (action - 2);
+ else
+ break syntax;
+ } else {
+ tzoffset = action - 10000;
+ }
+ }
+ break;
+ }
+ if (k < 0)
+ break syntax;
+ prevc = 0;
+ }
+ }
+ if (year == Integer.MIN_VALUE || mon < 0 || mday < 0)
+ break syntax;
+ // Parse 2-digit years within the correct default century.
+ if (year < 100) {
+ synchronized (Date.class) {
+ if (defaultCenturyStart == 0) {
+ defaultCenturyStart = gcal.getCalendarDate().getYear() - 80;
+ }
+ }
+ year += (defaultCenturyStart / 100) * 100;
+ if (year < defaultCenturyStart) year += 100;
+ }
+ if (sec < 0)
+ sec = 0;
+ if (min < 0)
+ min = 0;
+ if (hour < 0)
+ hour = 0;
+ BaseCalendar cal = getCalendarSystem(year);
+ if (tzoffset == -1) { // no time zone specified, have to use local
+ BaseCalendar.Date ldate = (BaseCalendar.Date) cal.newCalendarDate(TimeZone.getDefaultRef());
+ ldate.setDate(year, mon + 1, mday);
+ ldate.setTimeOfDay(hour, min, sec, 0);
+ return cal.getTime(ldate);
+ }
+ BaseCalendar.Date udate = (BaseCalendar.Date) cal.newCalendarDate(null); // no time zone
+ udate.setDate(year, mon + 1, mday);
+ udate.setTimeOfDay(hour, min, sec, 0);
+ return cal.getTime(udate) + tzoffset * (60 * 1000);
+ }
+ // syntax error
+ throw new IllegalArgumentException();
+ }
+ private final static String wtb[] = {
+ "am", "pm",
+ "monday", "tuesday", "wednesday", "thursday", "friday",
+ "saturday", "sunday",
+ "january", "february", "march", "april", "may", "june",
+ "july", "august", "september", "october", "november", "december",
+ "gmt", "ut", "utc", "est", "edt", "cst", "cdt",
+ "mst", "mdt", "pst", "pdt"
+ };
+ private final static int ttb[] = {
+ 14, 1, 0, 0, 0, 0, 0, 0, 0,
+ 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
+ 10000 + 0, 10000 + 0, 10000 + 0, // GMT/UT/UTC
+ 10000 + 5 * 60, 10000 + 4 * 60, // EST/EDT
+ 10000 + 6 * 60, 10000 + 5 * 60, // CST/CDT
+ 10000 + 7 * 60, 10000 + 6 * 60, // MST/MDT
+ 10000 + 8 * 60, 10000 + 7 * 60 // PST/PDT
+ };
+
+ /**
+ * Returns a value that is the result of subtracting 1900 from the
+ * year that contains or begins with the instant in time represented
+ * by this Date object, as interpreted in the local
+ * time zone.
+ *
+ * @return the year represented by this date, minus 1900.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.get(Calendar.YEAR) - 1900.
+ */
+ @Deprecated
+ public int getYear() {
+ return normalize().getYear() - 1900;
+ }
+
+ /**
+ * Sets the year of this Date object to be the specified
+ * value plus 1900. This Date object is modified so
+ * that it represents a point in time within the specified year,
+ * with the month, date, hour, minute, and second the same as
+ * before, as interpreted in the local time zone. (Of course, if
+ * the date was February 29, for example, and the year is set to a
+ * non-leap year, then the new date will be treated as if it were
+ * on March 1.)
+ *
+ * @param year the year value.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.set(Calendar.YEAR, year + 1900).
+ */
+ @Deprecated
+ public void setYear(int year) {
+ getCalendarDate().setNormalizedYear(year + 1900);
+ }
+
+ /**
+ * Returns a number representing the month that contains or begins
+ * with the instant in time represented by this Date object.
+ * The value returned is between 0 and 11,
+ * with the value 0 representing January.
+ *
+ * @return the month represented by this date.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.get(Calendar.MONTH).
+ */
+ @Deprecated
+ public int getMonth() {
+ return normalize().getMonth() - 1; // adjust 1-based to 0-based
+ }
+
+ /**
+ * Sets the month of this date to the specified value. This
+ * Date object is modified so that it represents a point
+ * in time within the specified month, with the year, date, hour,
+ * minute, and second the same as before, as interpreted in the
+ * local time zone. If the date was October 31, for example, and
+ * the month is set to June, then the new date will be treated as
+ * if it were on July 1, because June has only 30 days.
+ *
+ * @param month the month value between 0-11.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.set(Calendar.MONTH, int month).
+ */
+ @Deprecated
+ public void setMonth(int month) {
+ int y = 0;
+ if (month >= 12) {
+ y = month / 12;
+ month %= 12;
+ } else if (month < 0) {
+ y = CalendarUtils.floorDivide(month, 12);
+ month = CalendarUtils.mod(month, 12);
+ }
+ BaseCalendar.Date d = getCalendarDate();
+ if (y != 0) {
+ d.setNormalizedYear(d.getNormalizedYear() + y);
+ }
+ d.setMonth(month + 1); // adjust 0-based to 1-based month numbering
+ }
+
+ /**
+ * Returns the day of the month represented by this Date object.
+ * The value returned is between 1 and 31
+ * representing the day of the month that contains or begins with the
+ * instant in time represented by this Date object, as
+ * interpreted in the local time zone.
+ *
+ * @return the day of the month represented by this date.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.get(Calendar.DAY_OF_MONTH).
+ * @deprecated
+ */
+ @Deprecated
+ public int getDate() {
+ return normalize().getDayOfMonth();
+ }
+
+ /**
+ * Sets the day of the month of this Date object to the
+ * specified value. This Date object is modified so that
+ * it represents a point in time within the specified day of the
+ * month, with the year, month, hour, minute, and second the same
+ * as before, as interpreted in the local time zone. If the date
+ * was April 30, for example, and the date is set to 31, then it
+ * will be treated as if it were on May 1, because April has only
+ * 30 days.
+ *
+ * @param date the day of the month value between 1-31.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.set(Calendar.DAY_OF_MONTH, int date).
+ */
+ @Deprecated
+ public void setDate(int date) {
+ getCalendarDate().setDayOfMonth(date);
+ }
+
+ /**
+ * Returns the day of the week represented by this date. The
+ * returned value (0 = Sunday, 1 = Monday,
+ * 2 = Tuesday, 3 = Wednesday, 4 =
+ * Thursday, 5 = Friday, 6 = Saturday)
+ * represents the day of the week that contains or begins with
+ * the instant in time represented by this Date object,
+ * as interpreted in the local time zone.
+ *
+ * @return the day of the week represented by this date.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.get(Calendar.DAY_OF_WEEK).
+ */
+ @Deprecated
+ public int getDay() {
+ return normalize().getDayOfWeek() - gcal.SUNDAY;
+ }
+
+ /**
+ * Returns the hour represented by this Date object. The
+ * returned value is a number (0 through 23)
+ * representing the hour within the day that contains or begins
+ * with the instant in time represented by this Date
+ * object, as interpreted in the local time zone.
+ *
+ * @return the hour represented by this date.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.get(Calendar.HOUR_OF_DAY).
+ */
+ @Deprecated
+ public int getHours() {
+ return normalize().getHours();
+ }
+
+ /**
+ * Sets the hour of this Date object to the specified value.
+ * This Date object is modified so that it represents a point
+ * in time within the specified hour of the day, with the year, month,
+ * date, minute, and second the same as before, as interpreted in the
+ * local time zone.
+ *
+ * @param hours the hour value.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.set(Calendar.HOUR_OF_DAY, int hours).
+ */
+ @Deprecated
+ public void setHours(int hours) {
+ getCalendarDate().setHours(hours);
+ }
+
+ /**
+ * Returns the number of minutes past the hour represented by this date,
+ * as interpreted in the local time zone.
+ * The value returned is between 0 and 59.
+ *
+ * @return the number of minutes past the hour represented by this date.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.get(Calendar.MINUTE).
+ */
+ @Deprecated
+ public int getMinutes() {
+ return normalize().getMinutes();
+ }
+
+ /**
+ * Sets the minutes of this Date object to the specified value.
+ * This Date object is modified so that it represents a point
+ * in time within the specified minute of the hour, with the year, month,
+ * date, hour, and second the same as before, as interpreted in the
+ * local time zone.
+ *
+ * @param minutes the value of the minutes.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.set(Calendar.MINUTE, int minutes).
+ */
+ @Deprecated
+ public void setMinutes(int minutes) {
+ getCalendarDate().setMinutes(minutes);
+ }
+
+ /**
+ * Returns the number of seconds past the minute represented by this date.
+ * The value returned is between 0 and 61. The
+ * values 60 and 61 can only occur on those
+ * Java Virtual Machines that take leap seconds into account.
+ *
+ * @return the number of seconds past the minute represented by this date.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.get(Calendar.SECOND).
+ */
+ @Deprecated
+ public int getSeconds() {
+ return normalize().getSeconds();
+ }
+
+ /**
+ * Sets the seconds of this Date to the specified value.
+ * This Date object is modified so that it represents a
+ * point in time within the specified second of the minute, with
+ * the year, month, date, hour, and minute the same as before, as
+ * interpreted in the local time zone.
+ *
+ * @param seconds the seconds value.
+ * @see java.util.Calendar
+ * @deprecated As of JDK version 1.1,
+ * replaced by Calendar.set(Calendar.SECOND, int seconds).
+ */
+ @Deprecated
+ public void setSeconds(int seconds) {
+ getCalendarDate().setSeconds(seconds);
+ }
+
+ /**
+ * Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT
+ * represented by this Date object.
+ *
+ * @return the number of milliseconds since January 1, 1970, 00:00:00 GMT
+ * represented by this date.
+ */
+ public long getTime() {
+ return getTimeImpl();
+ }
+
+ private final long getTimeImpl() {
+ if (cdate != null && !cdate.isNormalized()) {
+ normalize();
+ }
+ return fastTime;
+ }
+
+ /**
+ * Sets this Date object to represent a point in time that is
+ * time milliseconds after January 1, 1970 00:00:00 GMT.
+ *
+ * @param time the number of milliseconds.
+ */
+ public void setTime(long time) {
+ fastTime = time;
+ cdate = null;
+ }
+
+ /**
+ * Tests if this date is before the specified date.
+ *
+ * @param when a date.
+ * @return true if and only if the instant of time
+ * represented by this Date object is strictly
+ * earlier than the instant represented by when;
+ * false otherwise.
+ * @exception NullPointerException if when is null.
+ */
+ public boolean before(Date when) {
+ return getMillisOf(this) < getMillisOf(when);
+ }
+
+ /**
+ * Tests if this date is after the specified date.
+ *
+ * @param when a date.
+ * @return true if and only if the instant represented
+ * by this Date object is strictly later than the
+ * instant represented by when;
+ * false otherwise.
+ * @exception NullPointerException if when is null.
+ */
+ public boolean after(Date when) {
+ return getMillisOf(this) > getMillisOf(when);
+ }
+
+ /**
+ * Compares two dates for equality.
+ * The result is true if and only if the argument is
+ * not null and is a Date object that
+ * represents the same point in time, to the millisecond, as this object.
+ * Date objects are equal if and only if the
+ * getTime method returns the same long
+ * value for both.
+ *
+ * @param obj the object to compare with.
+ * @return true if the objects are the same;
+ * false otherwise.
+ * @see java.util.Date#getTime()
+ */
+ public boolean equals(Object obj) {
+ return obj instanceof Date && getTime() == ((Date) obj).getTime();
+ }
+
+ /**
+ * Returns the millisecond value of this Date object
+ * without affecting its internal state.
+ */
+ static final long getMillisOf(Date date) {
+ if (date.cdate == null || date.cdate.isNormalized()) {
+ return date.fastTime;
+ }
+ BaseCalendar.Date d = (BaseCalendar.Date) date.cdate.clone();
+ return gcal.getTime(d);
+ }
+
+ /**
+ * Compares two Dates for ordering.
+ *
+ * @param anotherDate the Date to be compared.
+ * @return the value 0 if the argument Date is equal to
+ * this Date; a value less than 0 if this Date
+ * is before the Date argument; and a value greater than
+ * 0 if this Date is after the Date argument.
+ * @since 1.2
+ * @exception NullPointerException if anotherDate is null.
+ */
+ public int compareTo(Date anotherDate) {
+ long thisTime = getMillisOf(this);
+ long anotherTime = getMillisOf(anotherDate);
+ return (thisTime
+ *
+ * @return a hash code value for this object.
+ */
+ public int hashCode() {
+ long ht = this.getTime();
+ return (int) ht ^ (int) (ht >> 32);
+ }
+
+ /**
+ * Converts this
+ * (int)(this.getTime()^(this.getTime() >>> 32))
Date object to a String
+ * of the form:
+ *
+ * where:
+ * dow mon dd hh:mm:ss zzz yyyy
+ *
+ *
+ * @return a string representation of this date.
+ * @see java.util.Date#toLocaleString()
+ * @see java.util.Date#toGMTString()
+ */
+ public String toString() {
+ // "EEE MMM dd HH:mm:ss zzz yyyy";
+ BaseCalendar.Date date = normalize();
+ StringBuilder sb = new StringBuilder(28);
+ int index = date.getDayOfWeek();
+ if (index == gcal.SUNDAY) {
+ index = 8;
+ }
+ convertToAbbr(sb, wtb[index]).append(' '); // EEE
+ convertToAbbr(sb, wtb[date.getMonth() - 1 + 2 + 7]).append(' '); // MMM
+ CalendarUtils.sprintf0d(sb, date.getDayOfMonth(), 2).append(' '); // dd
+
+ CalendarUtils.sprintf0d(sb, date.getHours(), 2).append(':'); // HH
+ CalendarUtils.sprintf0d(sb, date.getMinutes(), 2).append(':'); // mm
+ CalendarUtils.sprintf0d(sb, date.getSeconds(), 2).append(' '); // ss
+ TimeZone zi = date.getZone();
+ if (zi != null) {
+ sb.append(zi.getDisplayName(date.isDaylightTime(), zi.SHORT, Locale.US)); // zzz
+ } else {
+ sb.append("GMT");
+ }
+ sb.append(' ').append(date.getYear()); // yyyy
+ return sb.toString();
+ }
+
+ /**
+ * Converts the given name to its 3-letter abbreviation (e.g.,
+ * "monday" -> "Mon") and stored the abbreviation in the given
+ * StringBuilder.
+ */
+ private static final StringBuilder convertToAbbr(StringBuilder sb, String name) {
+ sb.append(Character.toUpperCase(name.charAt(0)));
+ sb.append(name.charAt(1)).append(name.charAt(2));
+ return sb;
+ }
+
+ /**
+ * Creates a string representation of this Date object in an
+ * implementation-dependent form. The intent is that the form should
+ * be familiar to the user of the Java application, wherever it may
+ * happen to be running. The intent is comparable to that of the
+ * "%c" format supported by the strftime()
+ * function of ISO C.
+ *
+ * @return a string representation of this date, using the locale
+ * conventions.
+ * @see java.text.DateFormat
+ * @see java.util.Date#toString()
+ * @see java.util.Date#toGMTString()
+ * @deprecated As of JDK version 1.1,
+ * replaced by DateFormat.format(Date date).
+ */
+ @Deprecated
+ public String toLocaleString() {
+ DateFormat formatter = DateFormat.getDateTimeInstance();
+ return formatter.format(this);
+ }
+
+ /**
+ * Creates a string representation of this Date object of
+ * the form:
+ *
+ *
DateFormat.format(Date date), using a
+ * GMT TimeZone.
+ */
+ @Deprecated
+ public String toGMTString() {
+ // d MMM yyyy HH:mm:ss 'GMT'
+ long t = getTime();
+ BaseCalendar cal = getCalendarSystem(t);
+ BaseCalendar.Date date =
+ (BaseCalendar.Date) cal.getCalendarDate(getTime(), (TimeZone)null);
+ StringBuilder sb = new StringBuilder(32);
+ CalendarUtils.sprintf0d(sb, date.getDayOfMonth(), 1).append(' '); // d
+ convertToAbbr(sb, wtb[date.getMonth() - 1 + 2 + 7]).append(' '); // MMM
+ sb.append(date.getYear()).append(' '); // yyyy
+ CalendarUtils.sprintf0d(sb, date.getHours(), 2).append(':'); // HH
+ CalendarUtils.sprintf0d(sb, date.getMinutes(), 2).append(':'); // mm
+ CalendarUtils.sprintf0d(sb, date.getSeconds(), 2); // ss
+ sb.append(" GMT"); // ' GMT'
+ return sb.toString();
+ }
+
+ /**
+ * Returns the offset, measured in minutes, for the local time zone
+ * relative to UTC that is appropriate for the time represented by
+ * this Date object.
+ *
+ * because on February 14, 1996, standard time (Eastern Standard Time)
+ * is in use, which is offset five hours from UTC; but:
+ *
+ * new Date(96, 1, 14).getTimezoneOffset() returns 300
+ * because on June 1, 1996, daylight saving time (Eastern Daylight Time)
+ * is in use, which is offset only four hours from UTC.
+ * new Date(96, 5, 1).getTimezoneOffset() returns 240
+ *
+ * @return the time-zone offset, in minutes, for the current time zone.
+ * @see java.util.Calendar#ZONE_OFFSET
+ * @see java.util.Calendar#DST_OFFSET
+ * @see java.util.TimeZone#getDefault
+ * @deprecated As of JDK version 1.1,
+ * replaced by
+ * (this.getTime() - UTC(this.getYear(),
+ * this.getMonth(),
+ * this.getDate(),
+ * this.getHours(),
+ * this.getMinutes(),
+ * this.getSeconds())) / (60 * 1000)
+ *
-(Calendar.get(Calendar.ZONE_OFFSET) +
+ * Calendar.get(Calendar.DST_OFFSET)) / (60 * 1000).
+ */
+ @Deprecated
+ public int getTimezoneOffset() {
+ int zoneOffset;
+ if (cdate == null) {
+ TimeZone tz = TimeZone.getDefaultRef();
+ if (tz instanceof ZoneInfo) {
+ zoneOffset = ((ZoneInfo)tz).getOffsets(fastTime, null);
+ } else {
+ zoneOffset = tz.getOffset(fastTime);
+ }
+ } else {
+ normalize();
+ zoneOffset = cdate.getZoneOffset();
+ }
+ return -zoneOffset/60000; // convert to minutes
+ }
+
+ private final BaseCalendar.Date getCalendarDate() {
+ if (cdate == null) {
+ BaseCalendar cal = getCalendarSystem(fastTime);
+ cdate = (BaseCalendar.Date) cal.getCalendarDate(fastTime,
+ TimeZone.getDefaultRef());
+ }
+ return cdate;
+ }
+
+ private final BaseCalendar.Date normalize() {
+ if (cdate == null) {
+ BaseCalendar cal = getCalendarSystem(fastTime);
+ cdate = (BaseCalendar.Date) cal.getCalendarDate(fastTime,
+ TimeZone.getDefaultRef());
+ return cdate;
+ }
+
+ // Normalize cdate with the TimeZone in cdate first. This is
+ // required for the compatible behavior.
+ if (!cdate.isNormalized()) {
+ cdate = normalize(cdate);
+ }
+
+ // If the default TimeZone has changed, then recalculate the
+ // fields with the new TimeZone.
+ TimeZone tz = TimeZone.getDefaultRef();
+ if (tz != cdate.getZone()) {
+ cdate.setZone(tz);
+ CalendarSystem cal = getCalendarSystem(cdate);
+ cal.getCalendarDate(fastTime, cdate);
+ }
+ return cdate;
+ }
+
+ // fastTime and the returned data are in sync upon return.
+ private final BaseCalendar.Date normalize(BaseCalendar.Date date) {
+ int y = date.getNormalizedYear();
+ int m = date.getMonth();
+ int d = date.getDayOfMonth();
+ int hh = date.getHours();
+ int mm = date.getMinutes();
+ int ss = date.getSeconds();
+ int ms = date.getMillis();
+ TimeZone tz = date.getZone();
+
+ // If the specified year can't be handled using a long value
+ // in milliseconds, GregorianCalendar is used for full
+ // compatibility with underflow and overflow. This is required
+ // by some JCK tests. The limits are based max year values -
+ // years that can be represented by max values of d, hh, mm,
+ // ss and ms. Also, let GregorianCalendar handle the default
+ // cutover year so that we don't need to worry about the
+ // transition here.
+ if (y == 1582 || y > 280000000 || y < -280000000) {
+ if (tz == null) {
+ tz = TimeZone.getTimeZone("GMT");
+ }
+ GregorianCalendar gc = new GregorianCalendar(tz);
+ gc.clear();
+ gc.set(gc.MILLISECOND, ms);
+ gc.set(y, m-1, d, hh, mm, ss);
+ fastTime = gc.getTimeInMillis();
+ BaseCalendar cal = getCalendarSystem(fastTime);
+ date = (BaseCalendar.Date) cal.getCalendarDate(fastTime, tz);
+ return date;
+ }
+
+ BaseCalendar cal = getCalendarSystem(y);
+ if (cal != getCalendarSystem(date)) {
+ date = (BaseCalendar.Date) cal.newCalendarDate(tz);
+ date.setNormalizedDate(y, m, d).setTimeOfDay(hh, mm, ss, ms);
+ }
+ // Perform the GregorianCalendar-style normalization.
+ fastTime = cal.getTime(date);
+
+ // In case the normalized date requires the other calendar
+ // system, we need to recalculate it using the other one.
+ BaseCalendar ncal = getCalendarSystem(fastTime);
+ if (ncal != cal) {
+ date = (BaseCalendar.Date) ncal.newCalendarDate(tz);
+ date.setNormalizedDate(y, m, d).setTimeOfDay(hh, mm, ss, ms);
+ fastTime = ncal.getTime(date);
+ }
+ return date;
+ }
+
+ /**
+ * Returns the Gregorian or Julian calendar system to use with the
+ * given date. Use Gregorian from October 15, 1582.
+ *
+ * @param year normalized calendar year (not -1900)
+ * @return the CalendarSystem to use for the specified date
+ */
+ private static final BaseCalendar getCalendarSystem(int year) {
+ if (year >= 1582) {
+ return gcal;
+ }
+ return getJulianCalendar();
+ }
+
+ private static final BaseCalendar getCalendarSystem(long utc) {
+ // Quickly check if the time stamp given by `utc' is the Epoch
+ // or later. If it's before 1970, we convert the cutover to
+ // local time to compare.
+ if (utc >= 0
+ || utc >= GregorianCalendar.DEFAULT_GREGORIAN_CUTOVER
+ - TimeZone.getDefaultRef().getOffset(utc)) {
+ return gcal;
+ }
+ return getJulianCalendar();
+ }
+
+ private static final BaseCalendar getCalendarSystem(BaseCalendar.Date cdate) {
+ if (jcal == null) {
+ return gcal;
+ }
+ if (cdate.getEra() != null) {
+ return jcal;
+ }
+ return gcal;
+ }
+
+ synchronized private static final BaseCalendar getJulianCalendar() {
+ if (jcal == null) {
+ jcal = (BaseCalendar) CalendarSystem.forName("julian");
+ }
+ return jcal;
+ }
+
+ /**
+ * Save the state of this object to a stream (i.e., serialize it).
+ *
+ * @serialData The value returned by getTime()
+ * is emitted (long). This represents the offset from
+ * January 1, 1970, 00:00:00 GMT in milliseconds.
+ */
+ private void writeObject(ObjectOutputStream s)
+ throws IOException
+ {
+ s.writeLong(getTimeImpl());
+ }
+
+ /**
+ * Reconstitute this object from a stream (i.e., deserialize it).
+ */
+ private void readObject(ObjectInputStream s)
+ throws IOException, ClassNotFoundException
+ {
+ fastTime = s.readLong();
+ }
+}