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jlechner |
/* DateFormat.java -- Class for formatting/parsing date/times
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Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005
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Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.text;
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import java.io.InvalidObjectException;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.Locale;
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import java.util.MissingResourceException;
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import java.util.ResourceBundle;
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import java.util.TimeZone;
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/**
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* @author Per Bothner (bothner@cygnus.com)
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* @date October 25, 1998.
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*/
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/* Written using "Java Class Libraries", 2nd edition, plus online
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* API docs for JDK 1.2 beta from http://www.javasoft.com.
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* Status: Mostly complete; search for FIXME to see omissions.
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*/
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public abstract class DateFormat extends Format implements Cloneable
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{
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private static final long serialVersionUID = 7218322306649953788L;
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// Names fixed by serialization spec.
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protected Calendar calendar;
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protected NumberFormat numberFormat;
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// (Values determined using a test program.)
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public static final int FULL = 0;
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public static final int LONG = 1;
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public static final int MEDIUM = 2;
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public static final int SHORT = 3;
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public static final int DEFAULT = MEDIUM;
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/* These constants need to have these exact values. They
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* correspond to index positions within the localPatternChars
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* string for a given locale. Each locale may specify its
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* own character for a particular field, but the position
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* of these characters must correspond to an appropriate field
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* number (as listed below), in order for their meaning to
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* be determined. For example, the US locale uses
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* the string "GyMdkHmsSEDFwWahKzYeugAZ", where 'G' is the character
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* for era, 'y' for year, and so on down to 'Z' for time zone.
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*/
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/**
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* Represents the position of the era
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* pattern character in the array of
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* localized pattern characters.
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* For example, 'AD' is an era used
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* in the Gregorian calendar system.
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* In the U.S. locale, this is 'G'.
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*/
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public static final int ERA_FIELD = 0;
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/**
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* Represents the position of the year
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* pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'y'.
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*/
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public static final int YEAR_FIELD = 1;
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/**
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* Represents the position of the month
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* pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'M'.
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*/
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public static final int MONTH_FIELD = 2;
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/**
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* Represents the position of the date
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* or day of the month pattern character
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* in the array of localized pattern
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* characters. In the U.S. locale,
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* this is 'd'.
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*/
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public static final int DATE_FIELD = 3;
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/**
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* Represents the position of the 24
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* hour pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'k'.
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* This field numbers hours from 1 to 24.
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*/
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public static final int HOUR_OF_DAY1_FIELD = 4;
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/**
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* Represents the position of the 24
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* hour pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'H'.
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* This field numbers hours from 0 to 23.
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*/
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public static final int HOUR_OF_DAY0_FIELD = 5;
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/**
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* Represents the position of the minute
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* pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'm'.
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*/
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public static final int MINUTE_FIELD = 6;
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/**
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* Represents the position of the second
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* pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 's'.
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*/
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public static final int SECOND_FIELD = 7;
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/**
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* Represents the position of the millisecond
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* pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'S'.
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*/
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public static final int MILLISECOND_FIELD = 8;
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/**
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* Represents the position of the day of the
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* week pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'E'.
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*/
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public static final int DAY_OF_WEEK_FIELD = 9;
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/**
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* Represents the position of the day of the
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* year pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'D'.
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*/
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public static final int DAY_OF_YEAR_FIELD = 10;
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/**
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* Represents the position of the day of the
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* week in the month pattern character in the
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* array of localized pattern characters.
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* In the U.S. locale, this is 'F'.
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*/
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public static final int DAY_OF_WEEK_IN_MONTH_FIELD = 11;
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/**
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* Represents the position of the week of the
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* year pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'w'.
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*/
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public static final int WEEK_OF_YEAR_FIELD = 12;
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/**
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* Represents the position of the week of the
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* month pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'W'.
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*/
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public static final int WEEK_OF_MONTH_FIELD = 13;
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/**
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* Represents the position of the am/pm
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* pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'a'.
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*/
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public static final int AM_PM_FIELD = 14;
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/**
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* Represents the position of the 12
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* hour pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'h'.
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* This field numbers hours from 1 to 12.
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*/
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public static final int HOUR1_FIELD = 15;
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/**
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* Represents the position of the 12
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* hour pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'K'.
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* This field numbers hours from 0 to 11.
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*/
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public static final int HOUR0_FIELD = 16;
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/**
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* Represents the position of the generic
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* timezone pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'z'.
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*/
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public static final int TIMEZONE_FIELD = 17;
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/**
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* Represents the position of the ISO year
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* pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'Y'.
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* This is a GNU extension in accordance with
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* the CLDR data used. This value may
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* differ from the normal year value.
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*/
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public static final int ISO_YEAR_FIELD = 18;
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/**
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* Represents the position of the localized
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* day of the week pattern character in the
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* array of localized pattern characters.
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* In the U.S. locale, this is 'e'.
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* This is a GNU extension in accordance with
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* the CLDR data used. This value only
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* differs from the day of the week with
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* numeric formatting, in which case the
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* locale's first day of the week is used.
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*/
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public static final int LOCALIZED_DAY_OF_WEEK_FIELD = 19;
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/**
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* Represents the position of the extended year
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* pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'u'.
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* This is a GNU extension in accordance with
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* the CLDR data used. This value modifies
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* the year value, so as to incorporate the era.
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* For example, in the Gregorian calendar system,
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* the extended year is negative instead of being
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* marked as BC.
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*/
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public static final int EXTENDED_YEAR_FIELD = 20;
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/**
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* Represents the position of the modified Julian
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* day pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'g'.
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* This is a GNU extension in accordance with
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* the CLDR data used. This value differs
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* from the standard Julian day in that days
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* are marked from midnight onwards rather than
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* noon, and the local time zone affects the value.
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* In simple terms, it can be thought of as all
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* the date fields represented as a single number.
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*/
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public static final int MODIFIED_JULIAN_DAY_FIELD = 21;
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/**
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* Represents the position of the millisecond
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* in the day pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'A'.
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* This is a GNU extension in accordance with
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* the CLDR data used. This value represents
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* all the time fields (excluding the time zone)
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* numerically, giving the number of milliseconds
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* into the day (e.g. 10 in the morning would
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* be 10 * 60 * 60 * 1000). Any daylight savings
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* offset also affects this value.
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*/
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public static final int MILLISECOND_IN_DAY_FIELD = 22;
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/**
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* Represents the position of the RFC822
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* timezone pattern character in the array of
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* localized pattern characters.
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* In the U.S. locale, this is 'Z'.
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* This is a GNU extension in accordance with
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* the CLDR data used. The value is the offset
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* of the current time from GMT e.g. -0500 would
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* be five hours prior to GMT.
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*/
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public static final int RFC822_TIMEZONE_FIELD = 23;
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public static class Field extends Format.Field
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{
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static final long serialVersionUID = 7441350119349544720L;
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private int calendarField;
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public static final DateFormat.Field ERA
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= new Field("era", Calendar.ERA);
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public static final DateFormat.Field YEAR
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= new Field("year", Calendar.YEAR);
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public static final DateFormat.Field MONTH
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= new Field("month", Calendar.MONTH);
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public static final DateFormat.Field DAY_OF_MONTH
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= new Field("day of month", Calendar.DAY_OF_MONTH);
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public static final DateFormat.Field HOUR_OF_DAY1
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= new Field("hour of day 1", Calendar.HOUR_OF_DAY);
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public static final DateFormat.Field HOUR_OF_DAY0
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= new Field("hour of day 0", Calendar.HOUR_OF_DAY);
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public static final DateFormat.Field MINUTE
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= new Field("minute", Calendar.MINUTE);
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public static final DateFormat.Field SECOND
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= new Field("second", Calendar.SECOND);
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public static final DateFormat.Field MILLISECOND
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= new Field("millisecond", Calendar.MILLISECOND);
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public static final DateFormat.Field DAY_OF_WEEK
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= new Field("day of week", Calendar.DAY_OF_WEEK);
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public static final DateFormat.Field DAY_OF_YEAR
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= new Field("day of year", Calendar.DAY_OF_YEAR);
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public static final DateFormat.Field DAY_OF_WEEK_IN_MONTH
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= new Field("day of week in month", Calendar.DAY_OF_WEEK_IN_MONTH);
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public static final DateFormat.Field WEEK_OF_YEAR
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= new Field("week of year", Calendar.WEEK_OF_YEAR);
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public static final DateFormat.Field WEEK_OF_MONTH
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= new Field("week of month", Calendar.WEEK_OF_MONTH);
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public static final DateFormat.Field AM_PM
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= new Field("am/pm", Calendar.AM_PM);
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public static final DateFormat.Field HOUR1
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= new Field("hour1", Calendar.HOUR);
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public static final DateFormat.Field HOUR0
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= new Field("hour0", Calendar.HOUR);
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public static final DateFormat.Field TIME_ZONE
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= new Field("timezone", Calendar.ZONE_OFFSET);
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public static final DateFormat.Field ISO_YEAR
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= new Field("iso year", Calendar.YEAR);
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public static final DateFormat.Field LOCALIZED_DAY_OF_WEEK
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= new Field("localized day of week", Calendar.DAY_OF_WEEK);
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public static final DateFormat.Field EXTENDED_YEAR
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= new Field("extended year", Calendar.YEAR);
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public static final DateFormat.Field MODIFIED_JULIAN_DAY
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= new Field("julian day", -1);
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public static final DateFormat.Field MILLISECOND_IN_DAY
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= new Field("millisecond in day", -1);
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344 |
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public static final DateFormat.Field RFC822_TIME_ZONE
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345 |
|
|
= new Field("rfc822 timezone", Calendar.ZONE_OFFSET);
|
346 |
|
|
|
347 |
|
|
static final DateFormat.Field[] allFields =
|
348 |
|
|
{
|
349 |
|
|
ERA, YEAR, MONTH, DAY_OF_MONTH, HOUR_OF_DAY1,
|
350 |
|
|
HOUR_OF_DAY0, MINUTE, SECOND, MILLISECOND,
|
351 |
|
|
DAY_OF_WEEK, DAY_OF_YEAR, DAY_OF_WEEK_IN_MONTH,
|
352 |
|
|
WEEK_OF_YEAR, WEEK_OF_MONTH, AM_PM, HOUR1, HOUR0,
|
353 |
|
|
TIME_ZONE, ISO_YEAR, LOCALIZED_DAY_OF_WEEK,
|
354 |
|
|
EXTENDED_YEAR, MODIFIED_JULIAN_DAY, MILLISECOND_IN_DAY,
|
355 |
|
|
RFC822_TIME_ZONE
|
356 |
|
|
};
|
357 |
|
|
|
358 |
|
|
// For deserialization
|
359 |
|
|
private Field()
|
360 |
|
|
{
|
361 |
|
|
super("");
|
362 |
|
|
}
|
363 |
|
|
|
364 |
|
|
protected Field(String name, int calendarField)
|
365 |
|
|
{
|
366 |
|
|
super(name);
|
367 |
|
|
this.calendarField = calendarField;
|
368 |
|
|
}
|
369 |
|
|
|
370 |
|
|
public int getCalendarField()
|
371 |
|
|
{
|
372 |
|
|
return calendarField;
|
373 |
|
|
}
|
374 |
|
|
|
375 |
|
|
public static Field ofCalendarField(int calendarField)
|
376 |
|
|
{
|
377 |
|
|
if (calendarField >= allFields.length || calendarField < 0)
|
378 |
|
|
throw new IllegalArgumentException("no such calendar field ("
|
379 |
|
|
+ calendarField + ")");
|
380 |
|
|
|
381 |
|
|
return allFields[calendarField];
|
382 |
|
|
}
|
383 |
|
|
|
384 |
|
|
protected Object readResolve() throws InvalidObjectException
|
385 |
|
|
{
|
386 |
|
|
String s = getName();
|
387 |
|
|
|
388 |
|
|
for (int i=0;i<allFields.length;i++)
|
389 |
|
|
if (s.equals(allFields[i].getName()))
|
390 |
|
|
return allFields[i];
|
391 |
|
|
|
392 |
|
|
throw new InvalidObjectException("no such DateFormat field called " + s);
|
393 |
|
|
}
|
394 |
|
|
}
|
395 |
|
|
|
396 |
|
|
/**
|
397 |
|
|
* This method initializes a new instance of <code>DateFormat</code>.
|
398 |
|
|
*/
|
399 |
|
|
protected DateFormat ()
|
400 |
|
|
{
|
401 |
|
|
}
|
402 |
|
|
|
403 |
|
|
/**
|
404 |
|
|
* This method tests this object for equality against the specified object.
|
405 |
|
|
* The two objects will be considered equal if an only if the specified
|
406 |
|
|
* object:
|
407 |
|
|
* <P>
|
408 |
|
|
* <ul>
|
409 |
|
|
* <li>Is not <code>null</code>.</li>
|
410 |
|
|
* <li>Is an instance of <code>DateFormat</code>.</li>
|
411 |
|
|
* <li>Has equal numberFormat field as this object.</li>
|
412 |
|
|
* <li>Has equal (Calendar) TimeZone rules as this object.</li>
|
413 |
|
|
* <li>Has equal (Calendar) isLenient results.</li>
|
414 |
|
|
* <li>Has equal Calendar first day of week and minimal days in week
|
415 |
|
|
* values.</li>
|
416 |
|
|
* </ul>
|
417 |
|
|
* Note that not all properties of the Calendar are relevant for a
|
418 |
|
|
* DateFormat. For formatting only the fact whether or not the
|
419 |
|
|
* TimeZone has the same rules and whether the calendar is lenient
|
420 |
|
|
* and has the same week rules is compared for this implementation
|
421 |
|
|
* of equals. Other properties of the Calendar (such as the time)
|
422 |
|
|
* are not taken into account.
|
423 |
|
|
*
|
424 |
|
|
* @param obj The object to test for equality against.
|
425 |
|
|
*
|
426 |
|
|
* @return <code>true</code> if the specified object is equal to this object,
|
427 |
|
|
* <code>false</code> otherwise.
|
428 |
|
|
*/
|
429 |
|
|
public boolean equals (Object obj)
|
430 |
|
|
{
|
431 |
|
|
if (!(obj instanceof DateFormat))
|
432 |
|
|
return false;
|
433 |
|
|
|
434 |
|
|
DateFormat d = (DateFormat) obj;
|
435 |
|
|
TimeZone tz = getTimeZone();
|
436 |
|
|
TimeZone tzd = d.getTimeZone();
|
437 |
|
|
if (tz.hasSameRules(tzd))
|
438 |
|
|
if (isLenient() == d.isLenient())
|
439 |
|
|
{
|
440 |
|
|
Calendar c = getCalendar();
|
441 |
|
|
Calendar cd = d.getCalendar();
|
442 |
|
|
if ((c == null && cd == null)
|
443 |
|
|
||
|
444 |
|
|
(c.getFirstDayOfWeek() == cd.getFirstDayOfWeek()
|
445 |
|
|
&&
|
446 |
|
|
c.getMinimalDaysInFirstWeek()
|
447 |
|
|
== cd.getMinimalDaysInFirstWeek()))
|
448 |
|
|
return ((numberFormat == null && d.numberFormat == null)
|
449 |
|
|
|| numberFormat.equals(d.numberFormat));
|
450 |
|
|
}
|
451 |
|
|
|
452 |
|
|
return false;
|
453 |
|
|
}
|
454 |
|
|
|
455 |
|
|
/**
|
456 |
|
|
* This method returns a copy of this object.
|
457 |
|
|
*
|
458 |
|
|
* @return A copy of this object.
|
459 |
|
|
*/
|
460 |
|
|
public Object clone ()
|
461 |
|
|
{
|
462 |
|
|
// We know the superclass just call's Object's generic cloner.
|
463 |
|
|
return super.clone ();
|
464 |
|
|
}
|
465 |
|
|
|
466 |
|
|
/**
|
467 |
|
|
* This method formats the specified <code>Object</code> into a date string
|
468 |
|
|
* and appends it to the specified <code>StringBuffer</code>.
|
469 |
|
|
* The specified object must be an instance of <code>Number</code> or
|
470 |
|
|
* <code>Date</code> or an <code>IllegalArgumentException</code> will be
|
471 |
|
|
* thrown.
|
472 |
|
|
*
|
473 |
|
|
* @param obj The <code>Object</code> to format.
|
474 |
|
|
* @param buf The <code>StringBuffer</code> to append the resultant
|
475 |
|
|
* <code>String</code> to.
|
476 |
|
|
* @param pos Is updated to the start and end index of the
|
477 |
|
|
* specified field.
|
478 |
|
|
*
|
479 |
|
|
* @return The <code>StringBuffer</code> supplied on input, with the
|
480 |
|
|
* formatted date/time appended.
|
481 |
|
|
*/
|
482 |
|
|
public final StringBuffer format (Object obj,
|
483 |
|
|
StringBuffer buf, FieldPosition pos)
|
484 |
|
|
{
|
485 |
|
|
if (obj instanceof Number)
|
486 |
|
|
obj = new Date(((Number) obj).longValue());
|
487 |
|
|
else if (! (obj instanceof Date))
|
488 |
|
|
throw new IllegalArgumentException
|
489 |
|
|
("Cannot format given Object as a Date");
|
490 |
|
|
|
491 |
|
|
return format ((Date) obj, buf, pos);
|
492 |
|
|
}
|
493 |
|
|
|
494 |
|
|
/**
|
495 |
|
|
* Formats the date argument according to the pattern specified.
|
496 |
|
|
*
|
497 |
|
|
* @param date The formatted date.
|
498 |
|
|
*/
|
499 |
|
|
public final String format (Date date)
|
500 |
|
|
{
|
501 |
|
|
StringBuffer sb = new StringBuffer ();
|
502 |
|
|
format (date, sb, new FieldPosition (MONTH_FIELD));
|
503 |
|
|
return sb.toString();
|
504 |
|
|
}
|
505 |
|
|
|
506 |
|
|
/**
|
507 |
|
|
* This method formats a <code>Date</code> into a string and appends it
|
508 |
|
|
* to the specified <code>StringBuffer</code>.
|
509 |
|
|
*
|
510 |
|
|
* @param date The <code>Date</code> value to format.
|
511 |
|
|
* @param buf The <code>StringBuffer</code> to append the resultant
|
512 |
|
|
* <code>String</code> to.
|
513 |
|
|
* @param pos Is updated to the start and end index of the
|
514 |
|
|
* specified field.
|
515 |
|
|
*
|
516 |
|
|
* @return The <code>StringBuffer</code> supplied on input, with the
|
517 |
|
|
* formatted date/time appended.
|
518 |
|
|
*/
|
519 |
|
|
public abstract StringBuffer format (Date date,
|
520 |
|
|
StringBuffer buf, FieldPosition pos);
|
521 |
|
|
|
522 |
|
|
/**
|
523 |
|
|
* This method returns a list of available locales supported by this
|
524 |
|
|
* class.
|
525 |
|
|
*/
|
526 |
|
|
public static Locale[] getAvailableLocales()
|
527 |
|
|
{
|
528 |
|
|
// FIXME
|
529 |
|
|
Locale[] l = new Locale[1];
|
530 |
|
|
l[0] = Locale.US;
|
531 |
|
|
return l;
|
532 |
|
|
}
|
533 |
|
|
|
534 |
|
|
/**
|
535 |
|
|
* This method returns the <code>Calendar</code> object being used by
|
536 |
|
|
* this object to parse/format datetimes.
|
537 |
|
|
*
|
538 |
|
|
* @return The <code>Calendar</code> being used by this object.
|
539 |
|
|
*
|
540 |
|
|
* @see java.util.Calendar
|
541 |
|
|
*/
|
542 |
|
|
public Calendar getCalendar ()
|
543 |
|
|
{
|
544 |
|
|
return calendar;
|
545 |
|
|
}
|
546 |
|
|
|
547 |
|
|
private static DateFormat computeInstance (int style, Locale loc,
|
548 |
|
|
boolean use_date, boolean use_time)
|
549 |
|
|
{
|
550 |
|
|
return computeInstance (style, style, loc, use_date, use_time);
|
551 |
|
|
}
|
552 |
|
|
|
553 |
|
|
private static DateFormat computeInstance (int dateStyle, int timeStyle,
|
554 |
|
|
Locale loc, boolean use_date,
|
555 |
|
|
boolean use_time)
|
556 |
|
|
{
|
557 |
|
|
ResourceBundle res;
|
558 |
|
|
try
|
559 |
|
|
{
|
560 |
|
|
res = ResourceBundle.getBundle("gnu.java.locale.LocaleInformation",
|
561 |
|
|
loc, ClassLoader.getSystemClassLoader());
|
562 |
|
|
}
|
563 |
|
|
catch (MissingResourceException x)
|
564 |
|
|
{
|
565 |
|
|
res = null;
|
566 |
|
|
}
|
567 |
|
|
|
568 |
|
|
String pattern = null;
|
569 |
|
|
if (use_date)
|
570 |
|
|
{
|
571 |
|
|
String name, def;
|
572 |
|
|
switch (dateStyle)
|
573 |
|
|
{
|
574 |
|
|
case FULL:
|
575 |
|
|
name = "fullDateFormat";
|
576 |
|
|
def = "EEEE MMMM d, yyyy G";
|
577 |
|
|
break;
|
578 |
|
|
case LONG:
|
579 |
|
|
name = "longDateFormat";
|
580 |
|
|
def = "MMMM d, yyyy";
|
581 |
|
|
break;
|
582 |
|
|
case MEDIUM:
|
583 |
|
|
name = "mediumDateFormat";
|
584 |
|
|
def = "d-MMM-yy";
|
585 |
|
|
break;
|
586 |
|
|
case SHORT:
|
587 |
|
|
name = "shortDateFormat";
|
588 |
|
|
def = "M/d/yy";
|
589 |
|
|
break;
|
590 |
|
|
default:
|
591 |
|
|
throw new IllegalArgumentException ();
|
592 |
|
|
}
|
593 |
|
|
try
|
594 |
|
|
{
|
595 |
|
|
pattern = res == null ? def : res.getString(name);
|
596 |
|
|
}
|
597 |
|
|
catch (MissingResourceException x)
|
598 |
|
|
{
|
599 |
|
|
pattern = def;
|
600 |
|
|
}
|
601 |
|
|
}
|
602 |
|
|
|
603 |
|
|
if (use_time)
|
604 |
|
|
{
|
605 |
|
|
if (pattern == null)
|
606 |
|
|
pattern = "";
|
607 |
|
|
else
|
608 |
|
|
pattern += " ";
|
609 |
|
|
|
610 |
|
|
String name, def;
|
611 |
|
|
switch (timeStyle)
|
612 |
|
|
{
|
613 |
|
|
case FULL:
|
614 |
|
|
name = "fullTimeFormat";
|
615 |
|
|
def = "h:mm:ss;S 'o''clock' a z";
|
616 |
|
|
break;
|
617 |
|
|
case LONG:
|
618 |
|
|
name = "longTimeFormat";
|
619 |
|
|
def = "h:mm:ss a z";
|
620 |
|
|
break;
|
621 |
|
|
case MEDIUM:
|
622 |
|
|
name = "mediumTimeFormat";
|
623 |
|
|
def = "h:mm:ss a";
|
624 |
|
|
break;
|
625 |
|
|
case SHORT:
|
626 |
|
|
name = "shortTimeFormat";
|
627 |
|
|
def = "h:mm a";
|
628 |
|
|
break;
|
629 |
|
|
default:
|
630 |
|
|
throw new IllegalArgumentException ();
|
631 |
|
|
}
|
632 |
|
|
|
633 |
|
|
String s;
|
634 |
|
|
try
|
635 |
|
|
{
|
636 |
|
|
s = res == null ? def : res.getString(name);
|
637 |
|
|
}
|
638 |
|
|
catch (MissingResourceException x)
|
639 |
|
|
{
|
640 |
|
|
s = def;
|
641 |
|
|
}
|
642 |
|
|
pattern += s;
|
643 |
|
|
}
|
644 |
|
|
|
645 |
|
|
return new SimpleDateFormat (pattern, loc);
|
646 |
|
|
}
|
647 |
|
|
|
648 |
|
|
/**
|
649 |
|
|
* This method returns an instance of <code>DateFormat</code> that will
|
650 |
|
|
* format using the default formatting style for dates.
|
651 |
|
|
*
|
652 |
|
|
* @return A new <code>DateFormat</code> instance.
|
653 |
|
|
*/
|
654 |
|
|
public static final DateFormat getDateInstance ()
|
655 |
|
|
{
|
656 |
|
|
return getDateInstance (DEFAULT, Locale.getDefault());
|
657 |
|
|
}
|
658 |
|
|
|
659 |
|
|
/**
|
660 |
|
|
* This method returns an instance of <code>DateFormat</code> that will
|
661 |
|
|
* format using the specified formatting style for dates.
|
662 |
|
|
*
|
663 |
|
|
* @param style The type of formatting to perform.
|
664 |
|
|
*
|
665 |
|
|
* @return A new <code>DateFormat</code> instance.
|
666 |
|
|
*/
|
667 |
|
|
public static final DateFormat getDateInstance (int style)
|
668 |
|
|
{
|
669 |
|
|
return getDateInstance (style, Locale.getDefault());
|
670 |
|
|
}
|
671 |
|
|
|
672 |
|
|
/**
|
673 |
|
|
* This method returns an instance of <code>DateFormat</code> that will
|
674 |
|
|
* format using the specified formatting style for dates. The specified
|
675 |
|
|
* localed will be used in place of the default.
|
676 |
|
|
*
|
677 |
|
|
* @param style The type of formatting to perform.
|
678 |
|
|
* @param loc The desired locale.
|
679 |
|
|
*
|
680 |
|
|
* @return A new <code>DateFormat</code> instance.
|
681 |
|
|
*/
|
682 |
|
|
public static final DateFormat getDateInstance (int style, Locale loc)
|
683 |
|
|
{
|
684 |
|
|
return computeInstance (style, loc, true, false);
|
685 |
|
|
}
|
686 |
|
|
|
687 |
|
|
/**
|
688 |
|
|
* This method returns a new instance of <code>DateFormat</code> that
|
689 |
|
|
* formats both dates and times using the <code>SHORT</code> style.
|
690 |
|
|
*
|
691 |
|
|
* @return A new <code>DateFormat</code>instance.
|
692 |
|
|
*/
|
693 |
|
|
public static final DateFormat getDateTimeInstance ()
|
694 |
|
|
{
|
695 |
|
|
return getDateTimeInstance (DEFAULT, DEFAULT, Locale.getDefault());
|
696 |
|
|
}
|
697 |
|
|
|
698 |
|
|
/**
|
699 |
|
|
* This method returns a new instance of <code>DateFormat</code> that
|
700 |
|
|
* formats both dates and times using the <code>DEFAULT</code> style.
|
701 |
|
|
*
|
702 |
|
|
* @return A new <code>DateFormat</code>instance.
|
703 |
|
|
*/
|
704 |
|
|
public static final DateFormat getDateTimeInstance (int dateStyle,
|
705 |
|
|
int timeStyle)
|
706 |
|
|
{
|
707 |
|
|
return getDateTimeInstance (dateStyle, timeStyle, Locale.getDefault());
|
708 |
|
|
}
|
709 |
|
|
|
710 |
|
|
/**
|
711 |
|
|
* This method returns a new instance of <code>DateFormat</code> that
|
712 |
|
|
* formats both dates and times using the specified styles.
|
713 |
|
|
*
|
714 |
|
|
* @param dateStyle The desired style for date formatting.
|
715 |
|
|
* @param timeStyle The desired style for time formatting
|
716 |
|
|
*
|
717 |
|
|
* @return A new <code>DateFormat</code>instance.
|
718 |
|
|
*/
|
719 |
|
|
public static final DateFormat getDateTimeInstance (int dateStyle,
|
720 |
|
|
int timeStyle,
|
721 |
|
|
Locale loc)
|
722 |
|
|
{
|
723 |
|
|
return computeInstance (dateStyle, timeStyle, loc, true, true);
|
724 |
|
|
}
|
725 |
|
|
|
726 |
|
|
/**
|
727 |
|
|
* This method returns a new instance of <code>DateFormat</code> that
|
728 |
|
|
* formats both dates and times using the <code>SHORT</code> style.
|
729 |
|
|
*
|
730 |
|
|
* @return A new <code>DateFormat</code>instance.
|
731 |
|
|
*/
|
732 |
|
|
public static final DateFormat getInstance ()
|
733 |
|
|
{
|
734 |
|
|
// JCL book says SHORT.
|
735 |
|
|
return getDateTimeInstance (SHORT, SHORT, Locale.getDefault());
|
736 |
|
|
}
|
737 |
|
|
|
738 |
|
|
/**
|
739 |
|
|
* This method returns the <code>NumberFormat</code> object being used
|
740 |
|
|
* by this object to parse/format time values.
|
741 |
|
|
*
|
742 |
|
|
* @return The <code>NumberFormat</code> in use by this object.
|
743 |
|
|
*/
|
744 |
|
|
public NumberFormat getNumberFormat ()
|
745 |
|
|
{
|
746 |
|
|
return numberFormat;
|
747 |
|
|
}
|
748 |
|
|
|
749 |
|
|
/**
|
750 |
|
|
* This method returns an instance of <code>DateFormat</code> that will
|
751 |
|
|
* format using the default formatting style for times.
|
752 |
|
|
*
|
753 |
|
|
* @return A new <code>DateFormat</code> instance.
|
754 |
|
|
*/
|
755 |
|
|
public static final DateFormat getTimeInstance ()
|
756 |
|
|
{
|
757 |
|
|
return getTimeInstance (DEFAULT, Locale.getDefault());
|
758 |
|
|
}
|
759 |
|
|
|
760 |
|
|
/**
|
761 |
|
|
* This method returns an instance of <code>DateFormat</code> that will
|
762 |
|
|
* format using the specified formatting style for times.
|
763 |
|
|
*
|
764 |
|
|
* @param style The type of formatting to perform.
|
765 |
|
|
*
|
766 |
|
|
* @return A new <code>DateFormat</code> instance.
|
767 |
|
|
*/
|
768 |
|
|
public static final DateFormat getTimeInstance (int style)
|
769 |
|
|
{
|
770 |
|
|
return getTimeInstance (style, Locale.getDefault());
|
771 |
|
|
}
|
772 |
|
|
|
773 |
|
|
/**
|
774 |
|
|
* This method returns an instance of <code>DateFormat</code> that will
|
775 |
|
|
* format using the specified formatting style for times. The specified
|
776 |
|
|
* localed will be used in place of the default.
|
777 |
|
|
*
|
778 |
|
|
* @param style The type of formatting to perform.
|
779 |
|
|
* @param loc The desired locale.
|
780 |
|
|
*
|
781 |
|
|
* @return A new <code>DateFormat</code> instance.
|
782 |
|
|
*/
|
783 |
|
|
public static final DateFormat getTimeInstance (int style, Locale loc)
|
784 |
|
|
{
|
785 |
|
|
return computeInstance (style, loc, false, true);
|
786 |
|
|
}
|
787 |
|
|
|
788 |
|
|
/**
|
789 |
|
|
* This method returns the <code>TimeZone</code> object being used by
|
790 |
|
|
* this instance.
|
791 |
|
|
*
|
792 |
|
|
* @return The time zone in use.
|
793 |
|
|
*/
|
794 |
|
|
public TimeZone getTimeZone ()
|
795 |
|
|
{
|
796 |
|
|
return calendar.getTimeZone();
|
797 |
|
|
}
|
798 |
|
|
|
799 |
|
|
/**
|
800 |
|
|
* This method returns a hash value for this object.
|
801 |
|
|
*
|
802 |
|
|
* @return A hash value for this object.
|
803 |
|
|
*/
|
804 |
|
|
public int hashCode ()
|
805 |
|
|
{
|
806 |
|
|
if (numberFormat != null)
|
807 |
|
|
return numberFormat.hashCode();
|
808 |
|
|
else
|
809 |
|
|
return 0;
|
810 |
|
|
}
|
811 |
|
|
|
812 |
|
|
/**
|
813 |
|
|
* This method indicates whether or not the parsing of date and time
|
814 |
|
|
* values should be done in a lenient value.
|
815 |
|
|
*
|
816 |
|
|
* @return <code>true</code> if date/time parsing is lenient,
|
817 |
|
|
* <code>false</code> otherwise.
|
818 |
|
|
*/
|
819 |
|
|
public boolean isLenient ()
|
820 |
|
|
{
|
821 |
|
|
return calendar.isLenient();
|
822 |
|
|
}
|
823 |
|
|
|
824 |
|
|
/**
|
825 |
|
|
* This method parses the specified date/time string.
|
826 |
|
|
*
|
827 |
|
|
* @param source The string to parse.
|
828 |
|
|
* @return The resultant date.
|
829 |
|
|
*
|
830 |
|
|
* @exception ParseException If the specified string cannot be parsed.
|
831 |
|
|
*/
|
832 |
|
|
public Date parse (String source) throws ParseException
|
833 |
|
|
{
|
834 |
|
|
ParsePosition pos = new ParsePosition(0);
|
835 |
|
|
Date result = parse (source, pos);
|
836 |
|
|
if (result == null)
|
837 |
|
|
{
|
838 |
|
|
int index = pos.getErrorIndex();
|
839 |
|
|
if (index < 0)
|
840 |
|
|
index = pos.getIndex();
|
841 |
|
|
throw new ParseException("invalid Date syntax in \""
|
842 |
|
|
+ source + '\"', index);
|
843 |
|
|
}
|
844 |
|
|
return result;
|
845 |
|
|
}
|
846 |
|
|
|
847 |
|
|
/**
|
848 |
|
|
* This method parses the specified <code>String</code> into a
|
849 |
|
|
* <code>Date</code>. The <code>pos</code> argument contains the
|
850 |
|
|
* starting parse position on method entry and the ending parse
|
851 |
|
|
* position on method exit.
|
852 |
|
|
*
|
853 |
|
|
* @param source The string to parse.
|
854 |
|
|
* @param pos The starting parse position in entry, the ending parse
|
855 |
|
|
* position on exit.
|
856 |
|
|
*
|
857 |
|
|
* @return The parsed date, or <code>null</code> if the string cannot
|
858 |
|
|
* be parsed.
|
859 |
|
|
*/
|
860 |
|
|
public abstract Date parse (String source, ParsePosition pos);
|
861 |
|
|
|
862 |
|
|
/**
|
863 |
|
|
* This method is identical to <code>parse(String, ParsePosition)</code>,
|
864 |
|
|
* but returns its result as an <code>Object</code> instead of a
|
865 |
|
|
* <code>Date</code>.
|
866 |
|
|
*
|
867 |
|
|
* @param source The string to parse.
|
868 |
|
|
* @param pos The starting parse position in entry, the ending parse
|
869 |
|
|
* position on exit.
|
870 |
|
|
*
|
871 |
|
|
* @return The parsed date, or <code>null</code> if the string cannot
|
872 |
|
|
* be parsed.
|
873 |
|
|
*/
|
874 |
|
|
public Object parseObject (String source, ParsePosition pos)
|
875 |
|
|
{
|
876 |
|
|
return parse(source, pos);
|
877 |
|
|
}
|
878 |
|
|
|
879 |
|
|
/**
|
880 |
|
|
* This method specified the <code>Calendar</code> that should be used
|
881 |
|
|
* by this object to parse/format datetimes.
|
882 |
|
|
*
|
883 |
|
|
* @param calendar The new <code>Calendar</code> for this object.
|
884 |
|
|
*
|
885 |
|
|
* @see java.util.Calendar
|
886 |
|
|
*/
|
887 |
|
|
public void setCalendar (Calendar calendar)
|
888 |
|
|
{
|
889 |
|
|
this.calendar = calendar;
|
890 |
|
|
}
|
891 |
|
|
|
892 |
|
|
/**
|
893 |
|
|
* This method specifies whether or not this object should be lenient in
|
894 |
|
|
* the syntax it accepts while parsing date/time values.
|
895 |
|
|
*
|
896 |
|
|
* @param lenient <code>true</code> if parsing should be lenient,
|
897 |
|
|
* <code>false</code> otherwise.
|
898 |
|
|
*/
|
899 |
|
|
public void setLenient (boolean lenient)
|
900 |
|
|
{
|
901 |
|
|
calendar.setLenient(lenient);
|
902 |
|
|
}
|
903 |
|
|
|
904 |
|
|
/**
|
905 |
|
|
* This method specifies the <code>NumberFormat</code> object that should
|
906 |
|
|
* be used by this object to parse/format times.
|
907 |
|
|
*
|
908 |
|
|
* @param numberFormat The <code>NumberFormat</code> in use by this object.
|
909 |
|
|
*/
|
910 |
|
|
public void setNumberFormat (NumberFormat numberFormat)
|
911 |
|
|
{
|
912 |
|
|
this.numberFormat = numberFormat;
|
913 |
|
|
}
|
914 |
|
|
|
915 |
|
|
/**
|
916 |
|
|
* This method sets the time zone that should be used by this object.
|
917 |
|
|
*
|
918 |
|
|
* @param timeZone The new time zone.
|
919 |
|
|
*/
|
920 |
|
|
public void setTimeZone (TimeZone timeZone)
|
921 |
|
|
{
|
922 |
|
|
calendar.setTimeZone(timeZone);
|
923 |
|
|
}
|
924 |
|
|
}
|