896 lines
27 KiB
Java
896 lines
27 KiB
Java
/* 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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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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public static final DateFormat.Field RFC822_TIME_ZONE
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= new Field("rfc822 timezone", Calendar.ZONE_OFFSET);
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static final DateFormat.Field[] allFields =
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{
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ERA, YEAR, MONTH, DAY_OF_MONTH, HOUR_OF_DAY1,
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HOUR_OF_DAY0, MINUTE, SECOND, MILLISECOND,
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DAY_OF_WEEK, DAY_OF_YEAR, DAY_OF_WEEK_IN_MONTH,
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WEEK_OF_YEAR, WEEK_OF_MONTH, AM_PM, HOUR1, HOUR0,
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TIME_ZONE, ISO_YEAR, LOCALIZED_DAY_OF_WEEK,
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EXTENDED_YEAR, MODIFIED_JULIAN_DAY, MILLISECOND_IN_DAY,
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RFC822_TIME_ZONE
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};
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// For deserialization
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private Field()
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{
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super("");
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}
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protected Field(String name, int calendarField)
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{
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super(name);
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this.calendarField = calendarField;
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}
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public int getCalendarField()
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{
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return calendarField;
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}
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public static Field ofCalendarField(int calendarField)
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{
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if (calendarField >= allFields.length || calendarField < 0)
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throw new IllegalArgumentException("no such calendar field ("
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+ calendarField + ")");
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return allFields[calendarField];
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}
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protected Object readResolve() throws InvalidObjectException
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{
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String s = getName();
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for (int i=0;i<allFields.length;i++)
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if (s.equals(allFields[i].getName()))
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return allFields[i];
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throw new InvalidObjectException("no such DateFormat field called " + s);
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}
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}
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/**
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* This method initializes a new instance of <code>DateFormat</code>.
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*/
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protected DateFormat ()
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{
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}
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/**
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* This method tests this object for equality against the specified object.
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* The two objects will be considered equal if an only if the specified
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* object:
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* <P>
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* <ul>
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* <li>Is not <code>null</code>.</li>
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* <li>Is an instance of <code>DateFormat</code>.</li>
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* <li>Has the same numberFormat field value as this object.</li>
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* </ul>
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*
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* @param obj The object to test for equality against.
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*
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* @return <code>true</code> if the specified object is equal to this object,
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* <code>false</code> otherwise.
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*/
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public boolean equals (Object obj)
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{
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if (!(obj instanceof DateFormat))
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return false;
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DateFormat d = (DateFormat) obj;
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return numberFormat.equals(d.numberFormat);
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}
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/**
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* This method returns a copy of this object.
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*
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* @return A copy of this object.
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*/
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public Object clone ()
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{
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// We know the superclass just call's Object's generic cloner.
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return super.clone ();
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}
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/**
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* This method formats the specified <code>Object</code> into a date string
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* and appends it to the specified <code>StringBuffer</code>.
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* The specified object must be an instance of <code>Number</code> or
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* <code>Date</code> or an <code>IllegalArgumentException</code> will be
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* thrown.
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*
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* @param obj The <code>Object</code> to format.
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* @param toAppendTo The <code>StringBuffer</code> to append the resultant
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* <code>String</code> to.
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* @param fieldPosition Is updated to the start and end index of the
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* specified field.
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*
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* @return The <code>StringBuffer</code> supplied on input, with the
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* formatted date/time appended.
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*/
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public final StringBuffer format (Object obj,
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StringBuffer buf, FieldPosition pos)
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{
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if (obj instanceof Number)
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obj = new Date(((Number) obj).longValue());
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else if (! (obj instanceof Date))
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throw new IllegalArgumentException
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("Cannot format given Object as a Date");
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return format ((Date) obj, buf, pos);
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}
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/**
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* Formats the date argument according to the pattern specified.
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*
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* @param date The formatted date.
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*/
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public final String format (Date date)
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{
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StringBuffer sb = new StringBuffer ();
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format (date, sb, new FieldPosition (MONTH_FIELD));
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return sb.toString();
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}
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/**
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* This method formats a <code>Date</code> into a string and appends it
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* to the specified <code>StringBuffer</code>.
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*
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* @param date The <code>Date</code> value to format.
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* @param toAppendTo The <code>StringBuffer</code> to append the resultant
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* <code>String</code> to.
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* @param fieldPosition Is updated to the start and end index of the
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* specified field.
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*
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* @return The <code>StringBuffer</code> supplied on input, with the
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* formatted date/time appended.
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*/
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public abstract StringBuffer format (Date date,
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StringBuffer buf, FieldPosition pos);
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/**
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* This method returns a list of available locales supported by this
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* class.
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*/
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public static Locale[] getAvailableLocales()
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{
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// FIXME
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Locale[] l = new Locale[1];
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l[0] = Locale.US;
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return l;
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}
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/**
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* This method returns the <code>Calendar</code> object being used by
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* this object to parse/format datetimes.
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*
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* @return The <code>Calendar</code> being used by this object.
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*
|
|
* @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)
|
|
{
|
|
ResourceBundle res;
|
|
try
|
|
{
|
|
res = ResourceBundle.getBundle("gnu.java.locale.LocaleInformation",
|
|
loc, ClassLoader.getSystemClassLoader());
|
|
}
|
|
catch (MissingResourceException x)
|
|
{
|
|
res = null;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* 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 aLocale The desired locale.
|
|
*
|
|
* @return A new <code>DateFormat</code> instance.
|
|
*/
|
|
public static final DateFormat getDateInstance (int style, Locale loc)
|
|
{
|
|
return computeInstance (style, loc, true, false);
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
return computeInstance (dateStyle, timeStyle, loc, true, true);
|
|
}
|
|
|
|
/**
|
|
* 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 aLocale The desired locale.
|
|
*
|
|
* @return A new <code>DateFormat</code> instance.
|
|
*/
|
|
public static final DateFormat getTimeInstance (int style, Locale loc)
|
|
{
|
|
return computeInstance (style, loc, false, true);
|
|
}
|
|
|
|
/**
|
|
* 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 text 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 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 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 The new time zone.
|
|
*/
|
|
public void setTimeZone (TimeZone timeZone)
|
|
{
|
|
calendar.setTimeZone(timeZone);
|
|
}
|
|
}
|