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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
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tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/text/DateFormat.java
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+/* DateFormat.java -- Class for formatting/parsing date/times
+ Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005
+ Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.text;
+
+import gnu.java.locale.LocaleHelper;
+
+import java.text.spi.DateFormatProvider;
+
+import java.io.InvalidObjectException;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.Locale;
+import java.util.MissingResourceException;
+import java.util.ResourceBundle;
+import java.util.ServiceLoader;
+import java.util.TimeZone;
+
+/**
+ * @author Per Bothner (bothner@cygnus.com)
+ * @date October 25, 1998.
+ */
+/* Written using "Java Class Libraries", 2nd edition, plus online
+ * API docs for JDK 1.2 beta from http://www.javasoft.com.
+ * Status: Mostly complete; search for FIXME to see omissions.
+ */
+
+public abstract class DateFormat extends Format implements Cloneable
+{
+ private static final long serialVersionUID = 7218322306649953788L;
+
+ // Names fixed by serialization spec.
+ protected Calendar calendar;
+ protected NumberFormat numberFormat;
+
+ // (Values determined using a test program.)
+ public static final int FULL = 0;
+ public static final int LONG = 1;
+ public static final int MEDIUM = 2;
+ public static final int SHORT = 3;
+ public static final int DEFAULT = MEDIUM;
+
+ /* These constants need to have these exact values. They
+ * correspond to index positions within the localPatternChars
+ * string for a given locale. Each locale may specify its
+ * own character for a particular field, but the position
+ * of these characters must correspond to an appropriate field
+ * number (as listed below), in order for their meaning to
+ * be determined. For example, the US locale uses
+ * the string "GyMdkHmsSEDFwWahKzYeugAZ", where 'G' is the character
+ * for era, 'y' for year, and so on down to 'Z' for time zone.
+ */
+ /**
+ * Represents the position of the era
+ * pattern character in the array of
+ * localized pattern characters.
+ * For example, 'AD' is an era used
+ * in the Gregorian calendar system.
+ * In the U.S. locale, this is 'G'.
+ */
+ public static final int ERA_FIELD = 0;
+ /**
+ * Represents the position of the year
+ * pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'y'.
+ */
+ public static final int YEAR_FIELD = 1;
+ /**
+ * Represents the position of the month
+ * pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'M'.
+ */
+ public static final int MONTH_FIELD = 2;
+ /**
+ * Represents the position of the date
+ * or day of the month pattern character
+ * in the array of localized pattern
+ * characters. In the U.S. locale,
+ * this is 'd'.
+ */
+ public static final int DATE_FIELD = 3;
+ /**
+ * Represents the position of the 24
+ * hour pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'k'.
+ * This field numbers hours from 1 to 24.
+ */
+ public static final int HOUR_OF_DAY1_FIELD = 4;
+ /**
+ * Represents the position of the 24
+ * hour pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'H'.
+ * This field numbers hours from 0 to 23.
+ */
+ public static final int HOUR_OF_DAY0_FIELD = 5;
+ /**
+ * Represents the position of the minute
+ * pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'm'.
+ */
+ public static final int MINUTE_FIELD = 6;
+ /**
+ * Represents the position of the second
+ * pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 's'.
+ */
+ public static final int SECOND_FIELD = 7;
+ /**
+ * Represents the position of the millisecond
+ * pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'S'.
+ */
+ public static final int MILLISECOND_FIELD = 8;
+ /**
+ * Represents the position of the day of the
+ * week pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'E'.
+ */
+ public static final int DAY_OF_WEEK_FIELD = 9;
+ /**
+ * Represents the position of the day of the
+ * year pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'D'.
+ */
+ public static final int DAY_OF_YEAR_FIELD = 10;
+ /**
+ * Represents the position of the day of the
+ * week in the month pattern character in the
+ * array of localized pattern characters.
+ * In the U.S. locale, this is 'F'.
+ */
+ public static final int DAY_OF_WEEK_IN_MONTH_FIELD = 11;
+ /**
+ * Represents the position of the week of the
+ * year pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'w'.
+ */
+ public static final int WEEK_OF_YEAR_FIELD = 12;
+ /**
+ * Represents the position of the week of the
+ * month pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'W'.
+ */
+ public static final int WEEK_OF_MONTH_FIELD = 13;
+ /**
+ * Represents the position of the am/pm
+ * pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'a'.
+ */
+ public static final int AM_PM_FIELD = 14;
+ /**
+ * Represents the position of the 12
+ * hour pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'h'.
+ * This field numbers hours from 1 to 12.
+ */
+ public static final int HOUR1_FIELD = 15;
+ /**
+ * Represents the position of the 12
+ * hour pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'K'.
+ * This field numbers hours from 0 to 11.
+ */
+ public static final int HOUR0_FIELD = 16;
+ /**
+ * Represents the position of the generic
+ * timezone pattern character in the array of
+ * localized pattern characters.
+ * In the U.S. locale, this is 'z'.
+ */
+ public static final int TIMEZONE_FIELD = 17;
+
+ public static class Field extends Format.Field
+ {
+ static final long serialVersionUID = 7441350119349544720L;
+
+ private int calendarField;
+
+ public static final DateFormat.Field ERA
+ = new Field("era", Calendar.ERA);
+ public static final DateFormat.Field YEAR
+ = new Field("year", Calendar.YEAR);
+ public static final DateFormat.Field MONTH
+ = new Field("month", Calendar.MONTH);
+ public static final DateFormat.Field DAY_OF_MONTH
+ = new Field("day of month", Calendar.DAY_OF_MONTH);
+ public static final DateFormat.Field HOUR_OF_DAY1
+ = new Field("hour of day 1", Calendar.HOUR_OF_DAY);
+ public static final DateFormat.Field HOUR_OF_DAY0
+ = new Field("hour of day 0", Calendar.HOUR_OF_DAY);
+ public static final DateFormat.Field MINUTE
+ = new Field("minute", Calendar.MINUTE);
+ public static final DateFormat.Field SECOND
+ = new Field("second", Calendar.SECOND);
+ public static final DateFormat.Field MILLISECOND
+ = new Field("millisecond", Calendar.MILLISECOND);
+ public static final DateFormat.Field DAY_OF_WEEK
+ = new Field("day of week", Calendar.DAY_OF_WEEK);
+ public static final DateFormat.Field DAY_OF_YEAR
+ = new Field("day of year", Calendar.DAY_OF_YEAR);
+ public static final DateFormat.Field DAY_OF_WEEK_IN_MONTH
+ = new Field("day of week in month", Calendar.DAY_OF_WEEK_IN_MONTH);
+ public static final DateFormat.Field WEEK_OF_YEAR
+ = new Field("week of year", Calendar.WEEK_OF_YEAR);
+ public static final DateFormat.Field WEEK_OF_MONTH
+ = new Field("week of month", Calendar.WEEK_OF_MONTH);
+ public static final DateFormat.Field AM_PM
+ = new Field("am/pm", Calendar.AM_PM);
+ public static final DateFormat.Field HOUR1
+ = new Field("hour1", Calendar.HOUR);
+ public static final DateFormat.Field HOUR0
+ = new Field("hour0", Calendar.HOUR);
+ public static final DateFormat.Field TIME_ZONE
+ = new Field("timezone", Calendar.ZONE_OFFSET);
+
+ static final DateFormat.Field[] allFields =
+ {
+ ERA, YEAR, MONTH, DAY_OF_MONTH, HOUR_OF_DAY1,
+ HOUR_OF_DAY0, MINUTE, SECOND, MILLISECOND,
+ DAY_OF_WEEK, DAY_OF_YEAR, DAY_OF_WEEK_IN_MONTH,
+ WEEK_OF_YEAR, WEEK_OF_MONTH, AM_PM, HOUR1, HOUR0,
+ TIME_ZONE
+ };
+
+ // For deserialization
+ private Field()
+ {
+ super("");
+ }
+
+ protected Field(String name, int calendarField)
+ {
+ super(name);
+ this.calendarField = calendarField;
+ }
+
+ public int getCalendarField()
+ {
+ return calendarField;
+ }
+
+ public static Field ofCalendarField(int calendarField)
+ {
+ if (calendarField >= allFields.length || calendarField < 0)
+ throw new IllegalArgumentException("no such calendar field ("
+ + calendarField + ")");
+
+ return allFields[calendarField];
+ }
+
+ protected Object readResolve() throws InvalidObjectException
+ {
+ String s = getName();
+
+ for (int i=0;i<allFields.length;i++)
+ if (s.equals(allFields[i].getName()))
+ return allFields[i];
+
+ throw new InvalidObjectException("no such DateFormat field called " + s);
+ }
+ }
+
+ /**
+ * This method initializes a new instance of <code>DateFormat</code>.
+ */
+ protected DateFormat ()
+ {
+ }
+
+ /**
+ * This method tests this object for equality against the specified object.
+ * The two objects will be considered equal if an only if the specified
+ * object:
+ * <P>
+ * <ul>
+ * <li>Is not <code>null</code>.</li>
+ * <li>Is an instance of <code>DateFormat</code>.</li>
+ * <li>Has equal numberFormat field as this object.</li>
+ * <li>Has equal (Calendar) TimeZone rules as this object.</li>
+ * <li>Has equal (Calendar) isLenient results.</li>
+ * <li>Has equal Calendar first day of week and minimal days in week
+ * values.</li>
+ * </ul>
+ * Note that not all properties of the Calendar are relevant for a
+ * DateFormat. For formatting only the fact whether or not the
+ * TimeZone has the same rules and whether the calendar is lenient
+ * and has the same week rules is compared for this implementation
+ * of equals. Other properties of the Calendar (such as the time)
+ * are not taken into account.
+ *
+ * @param obj The object to test for equality against.
+ *
+ * @return <code>true</code> if the specified object is equal to this object,
+ * <code>false</code> otherwise.
+ */
+ public boolean equals (Object obj)
+ {
+ if (!(obj instanceof DateFormat))
+ return false;
+
+ DateFormat d = (DateFormat) obj;
+ TimeZone tz = getTimeZone();
+ TimeZone tzd = d.getTimeZone();
+ if (tz.hasSameRules(tzd))
+ if (isLenient() == d.isLenient())
+ {
+ Calendar c = getCalendar();
+ Calendar cd = d.getCalendar();
+ if ((c == null && cd == null)
+ ||
+ (c.getFirstDayOfWeek() == cd.getFirstDayOfWeek()
+ &&
+ c.getMinimalDaysInFirstWeek()
+ == cd.getMinimalDaysInFirstWeek()))
+ return ((numberFormat == null && d.numberFormat == null)
+ || numberFormat.equals(d.numberFormat));
+ }
+
+ return false;
+ }
+
+ /**
+ * This method returns a copy of this object.
+ *
+ * @return A copy of this object.
+ */
+ public Object clone ()
+ {
+ // We know the superclass just call's Object's generic cloner.
+ return super.clone ();
+ }
+
+ /**
+ * This method formats the specified <code>Object</code> into a date string
+ * and appends it to the specified <code>StringBuffer</code>.
+ * The specified object must be an instance of <code>Number</code> or
+ * <code>Date</code> or an <code>IllegalArgumentException</code> will be
+ * thrown.
+ *
+ * @param obj The <code>Object</code> to format.
+ * @param buf The <code>StringBuffer</code> to append the resultant
+ * <code>String</code> to.
+ * @param pos Is updated to the start and end index of the
+ * specified field.
+ *
+ * @return The <code>StringBuffer</code> supplied on input, with the
+ * formatted date/time appended.
+ */
+ public final StringBuffer format (Object obj,
+ StringBuffer buf, FieldPosition pos)
+ {
+ if (obj instanceof Number)
+ obj = new Date(((Number) obj).longValue());
+ else if (! (obj instanceof Date))
+ throw new IllegalArgumentException
+ ("Cannot format given Object as a Date");
+
+ return format ((Date) obj, buf, pos);
+ }
+
+ /**
+ * Formats the date argument according to the pattern specified.
+ *
+ * @param date The formatted date.
+ */
+ public final String format (Date date)
+ {
+ StringBuffer sb = new StringBuffer ();
+ format (date, sb, new FieldPosition (MONTH_FIELD));
+ return sb.toString();
+ }
+
+ /**
+ * This method formats a <code>Date</code> into a string and appends it
+ * to the specified <code>StringBuffer</code>.
+ *
+ * @param date The <code>Date</code> value to format.
+ * @param buf The <code>StringBuffer</code> to append the resultant
+ * <code>String</code> to.
+ * @param pos Is updated to the start and end index of the
+ * specified field.
+ *
+ * @return The <code>StringBuffer</code> supplied on input, with the
+ * formatted date/time appended.
+ */
+ public abstract StringBuffer format (Date date,
+ StringBuffer buf, FieldPosition pos);
+
+ /**
+ * This method returns a list of available locales supported by this
+ * class.
+ */
+ public static Locale[] getAvailableLocales()
+ {
+ return Locale.getAvailableLocales();
+ }
+
+ /**
+ * This method returns the <code>Calendar</code> object being used by
+ * this object to parse/format datetimes.
+ *
+ * @return The <code>Calendar</code> being used by this object.
+ *
+ * @see java.util.Calendar
+ */
+ public Calendar getCalendar ()
+ {
+ return calendar;
+ }
+
+ private static DateFormat computeInstance (int style, Locale loc,
+ boolean use_date, boolean use_time)
+ {
+ return computeInstance (style, style, loc, use_date, use_time);
+ }
+
+ private static DateFormat computeInstance (int dateStyle, int timeStyle,
+ Locale loc, boolean use_date,
+ boolean use_time)
+ throws MissingResourceException
+ {
+ if (loc.equals(Locale.ROOT))
+ return computeDefault(dateStyle,timeStyle,use_date,use_time);
+
+ ResourceBundle res =
+ ResourceBundle.getBundle("gnu.java.locale.LocaleInformation",
+ loc, ClassLoader.getSystemClassLoader());
+
+ String pattern = null;
+ if (use_date)
+ {
+ String name, def;
+ switch (dateStyle)
+ {
+ case FULL:
+ name = "fullDateFormat";
+ def = "EEEE MMMM d, yyyy G";
+ break;
+ case LONG:
+ name = "longDateFormat";
+ def = "MMMM d, yyyy";
+ break;
+ case MEDIUM:
+ name = "mediumDateFormat";
+ def = "d-MMM-yy";
+ break;
+ case SHORT:
+ name = "shortDateFormat";
+ def = "M/d/yy";
+ break;
+ default:
+ throw new IllegalArgumentException ();
+ }
+ try
+ {
+ pattern = res == null ? def : res.getString(name);
+ }
+ catch (MissingResourceException x)
+ {
+ pattern = def;
+ }
+ }
+
+ if (use_time)
+ {
+ if (pattern == null)
+ pattern = "";
+ else
+ pattern += " ";
+
+ String name, def;
+ switch (timeStyle)
+ {
+ case FULL:
+ name = "fullTimeFormat";
+ def = "h:mm:ss;S 'o''clock' a z";
+ break;
+ case LONG:
+ name = "longTimeFormat";
+ def = "h:mm:ss a z";
+ break;
+ case MEDIUM:
+ name = "mediumTimeFormat";
+ def = "h:mm:ss a";
+ break;
+ case SHORT:
+ name = "shortTimeFormat";
+ def = "h:mm a";
+ break;
+ default:
+ throw new IllegalArgumentException ();
+ }
+
+ String s;
+ try
+ {
+ s = res == null ? def : res.getString(name);
+ }
+ catch (MissingResourceException x)
+ {
+ s = def;
+ }
+ pattern += s;
+ }
+
+ return new SimpleDateFormat (pattern, loc);
+ }
+
+ private static DateFormat computeDefault (int dateStyle, int timeStyle,
+ boolean use_date, boolean use_time)
+ {
+ String pattern = null;
+ if (use_date)
+ {
+ switch (dateStyle)
+ {
+ case FULL:
+ pattern = "EEEE MMMM d, yyyy G";
+ break;
+ case LONG:
+ pattern = "MMMM d, yyyy";
+ break;
+ case MEDIUM:
+ pattern = "d-MMM-yy";
+ break;
+ case SHORT:
+ pattern = "M/d/yy";
+ default:
+ throw new IllegalArgumentException ();
+ }
+ }
+
+ if (use_time)
+ {
+ if (pattern == null)
+ pattern = "";
+ else
+ pattern += " ";
+
+ switch (timeStyle)
+ {
+ case FULL:
+ pattern += "h:mm:ss;S 'o''clock' a z";
+ break;
+ case LONG:
+ pattern += "h:mm:ss a z";
+ break;
+ case MEDIUM:
+ pattern += "h:mm:ss a";
+ break;
+ case SHORT:
+ pattern += "h:mm a";
+ break;
+ default:
+ throw new IllegalArgumentException ();
+ }
+ }
+
+ return new SimpleDateFormat (pattern, Locale.ROOT);
+ }
+
+ /**
+ * This method returns an instance of <code>DateFormat</code> that will
+ * format using the default formatting style for dates.
+ *
+ * @return A new <code>DateFormat</code> instance.
+ */
+ public static final DateFormat getDateInstance ()
+ {
+ return getDateInstance (DEFAULT, Locale.getDefault());
+ }
+
+ /**
+ * This method returns an instance of <code>DateFormat</code> that will
+ * format using the specified formatting style for dates.
+ *
+ * @param style The type of formatting to perform.
+ *
+ * @return A new <code>DateFormat</code> instance.
+ */
+ public static final DateFormat getDateInstance (int style)
+ {
+ return getDateInstance (style, Locale.getDefault());
+ }
+
+ /**
+ * This method returns an instance of <code>DateFormat</code> that will
+ * format using the specified formatting style for dates. The specified
+ * localed will be used in place of the default.
+ *
+ * @param style The type of formatting to perform.
+ * @param loc The desired locale.
+ *
+ * @return A new <code>DateFormat</code> instance.
+ */
+ public static final DateFormat getDateInstance (int style, Locale loc)
+ {
+ try
+ {
+ return computeInstance (style, loc, true, false);
+ }
+ catch (MissingResourceException e)
+ {
+ for (DateFormatProvider p :
+ ServiceLoader.load(DateFormatProvider.class))
+ {
+ for (Locale l : p.getAvailableLocales())
+ {
+ if (l.equals(loc))
+ {
+ DateFormat df = p.getDateInstance(style, loc);
+ if (df != null)
+ return df;
+ break;
+ }
+ }
+ }
+ return getDateInstance(style,
+ LocaleHelper.getFallbackLocale(loc));
+ }
+ }
+
+ /**
+ * This method returns a new instance of <code>DateFormat</code> that
+ * formats both dates and times using the <code>SHORT</code> style.
+ *
+ * @return A new <code>DateFormat</code>instance.
+ */
+ public static final DateFormat getDateTimeInstance ()
+ {
+ return getDateTimeInstance (DEFAULT, DEFAULT, Locale.getDefault());
+ }
+
+ /**
+ * This method returns a new instance of <code>DateFormat</code> that
+ * formats both dates and times using the <code>DEFAULT</code> style.
+ *
+ * @return A new <code>DateFormat</code>instance.
+ */
+ public static final DateFormat getDateTimeInstance (int dateStyle,
+ int timeStyle)
+ {
+ return getDateTimeInstance (dateStyle, timeStyle, Locale.getDefault());
+ }
+
+ /**
+ * This method returns a new instance of <code>DateFormat</code> that
+ * formats both dates and times using the specified styles.
+ *
+ * @param dateStyle The desired style for date formatting.
+ * @param timeStyle The desired style for time formatting
+ *
+ * @return A new <code>DateFormat</code>instance.
+ */
+ public static final DateFormat getDateTimeInstance (int dateStyle,
+ int timeStyle,
+ Locale loc)
+ {
+ try
+ {
+ return computeInstance (dateStyle, timeStyle, loc, true, true);
+ }
+ catch (MissingResourceException e)
+ {
+ for (DateFormatProvider p :
+ ServiceLoader.load(DateFormatProvider.class))
+ {
+ for (Locale l : p.getAvailableLocales())
+ {
+ if (l.equals(loc))
+ {
+ DateFormat df = p.getDateTimeInstance(dateStyle,
+ timeStyle, loc);
+ if (df != null)
+ return df;
+ break;
+ }
+ }
+ }
+ return getDateTimeInstance(dateStyle, timeStyle,
+ LocaleHelper.getFallbackLocale(loc));
+ }
+ }
+
+ /**
+ * This method returns a new instance of <code>DateFormat</code> that
+ * formats both dates and times using the <code>SHORT</code> style.
+ *
+ * @return A new <code>DateFormat</code>instance.
+ */
+ public static final DateFormat getInstance ()
+ {
+ // JCL book says SHORT.
+ return getDateTimeInstance (SHORT, SHORT, Locale.getDefault());
+ }
+
+ /**
+ * This method returns the <code>NumberFormat</code> object being used
+ * by this object to parse/format time values.
+ *
+ * @return The <code>NumberFormat</code> in use by this object.
+ */
+ public NumberFormat getNumberFormat ()
+ {
+ return numberFormat;
+ }
+
+ /**
+ * This method returns an instance of <code>DateFormat</code> that will
+ * format using the default formatting style for times.
+ *
+ * @return A new <code>DateFormat</code> instance.
+ */
+ public static final DateFormat getTimeInstance ()
+ {
+ return getTimeInstance (DEFAULT, Locale.getDefault());
+ }
+
+ /**
+ * This method returns an instance of <code>DateFormat</code> that will
+ * format using the specified formatting style for times.
+ *
+ * @param style The type of formatting to perform.
+ *
+ * @return A new <code>DateFormat</code> instance.
+ */
+ public static final DateFormat getTimeInstance (int style)
+ {
+ return getTimeInstance (style, Locale.getDefault());
+ }
+
+ /**
+ * This method returns an instance of <code>DateFormat</code> that will
+ * format using the specified formatting style for times. The specified
+ * localed will be used in place of the default.
+ *
+ * @param style The type of formatting to perform.
+ * @param loc The desired locale.
+ *
+ * @return A new <code>DateFormat</code> instance.
+ */
+ public static final DateFormat getTimeInstance (int style, Locale loc)
+ {
+ try
+ {
+ return computeInstance (style, loc, false, true);
+ }
+ catch (MissingResourceException e)
+ {
+ for (DateFormatProvider p :
+ ServiceLoader.load(DateFormatProvider.class))
+ {
+ for (Locale l : p.getAvailableLocales())
+ {
+ if (l.equals(loc))
+ {
+ DateFormat df = p.getTimeInstance(style, loc);
+ if (df != null)
+ return df;
+ break;
+ }
+ }
+ }
+ return getTimeInstance(style,
+ LocaleHelper.getFallbackLocale(loc));
+ }
+ }
+
+ /**
+ * This method returns the <code>TimeZone</code> object being used by
+ * this instance.
+ *
+ * @return The time zone in use.
+ */
+ public TimeZone getTimeZone ()
+ {
+ return calendar.getTimeZone();
+ }
+
+ /**
+ * This method returns a hash value for this object.
+ *
+ * @return A hash value for this object.
+ */
+ public int hashCode ()
+ {
+ if (numberFormat != null)
+ return numberFormat.hashCode();
+ else
+ return 0;
+ }
+
+ /**
+ * This method indicates whether or not the parsing of date and time
+ * values should be done in a lenient value.
+ *
+ * @return <code>true</code> if date/time parsing is lenient,
+ * <code>false</code> otherwise.
+ */
+ public boolean isLenient ()
+ {
+ return calendar.isLenient();
+ }
+
+ /**
+ * This method parses the specified date/time string.
+ *
+ * @param source The string to parse.
+ * @return The resultant date.
+ *
+ * @exception ParseException If the specified string cannot be parsed.
+ */
+ public Date parse (String source) throws ParseException
+ {
+ ParsePosition pos = new ParsePosition(0);
+ Date result = parse (source, pos);
+ if (result == null)
+ {
+ int index = pos.getErrorIndex();
+ if (index < 0)
+ index = pos.getIndex();
+ throw new ParseException("invalid Date syntax in \""
+ + source + '\"', index);
+ }
+ return result;
+ }
+
+ /**
+ * This method parses the specified <code>String</code> into a
+ * <code>Date</code>. The <code>pos</code> argument contains the
+ * starting parse position on method entry and the ending parse
+ * position on method exit.
+ *
+ * @param source The string to parse.
+ * @param pos The starting parse position in entry, the ending parse
+ * position on exit.
+ *
+ * @return The parsed date, or <code>null</code> if the string cannot
+ * be parsed.
+ */
+ public abstract Date parse (String source, ParsePosition pos);
+
+ /**
+ * This method is identical to <code>parse(String, ParsePosition)</code>,
+ * but returns its result as an <code>Object</code> instead of a
+ * <code>Date</code>.
+ *
+ * @param source The string to parse.
+ * @param pos The starting parse position in entry, the ending parse
+ * position on exit.
+ *
+ * @return The parsed date, or <code>null</code> if the string cannot
+ * be parsed.
+ */
+ public Object parseObject (String source, ParsePosition pos)
+ {
+ return parse(source, pos);
+ }
+
+ /**
+ * This method specified the <code>Calendar</code> that should be used
+ * by this object to parse/format datetimes.
+ *
+ * @param calendar The new <code>Calendar</code> for this object.
+ *
+ * @see java.util.Calendar
+ */
+ public void setCalendar (Calendar calendar)
+ {
+ this.calendar = calendar;
+ }
+
+ /**
+ * This method specifies whether or not this object should be lenient in
+ * the syntax it accepts while parsing date/time values.
+ *
+ * @param lenient <code>true</code> if parsing should be lenient,
+ * <code>false</code> otherwise.
+ */
+ public void setLenient (boolean lenient)
+ {
+ calendar.setLenient(lenient);
+ }
+
+ /**
+ * This method specifies the <code>NumberFormat</code> object that should
+ * be used by this object to parse/format times.
+ *
+ * @param numberFormat The <code>NumberFormat</code> in use by this object.
+ */
+ public void setNumberFormat (NumberFormat numberFormat)
+ {
+ this.numberFormat = numberFormat;
+ }
+
+ /**
+ * This method sets the time zone that should be used by this object.
+ *
+ * @param timeZone The new time zone.
+ */
+ public void setTimeZone (TimeZone timeZone)
+ {
+ calendar.setTimeZone(timeZone);
+ }
+}