author | chegar |
Sun, 17 Aug 2014 15:54:13 +0100 | |
changeset 25859 | 3317bb8137f4 |
parent 24256 | jdk/src/share/classes/java/time/format/DecimalStyle.java@da9a41004459 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* |
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* This file is available under and governed by the GNU General Public |
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* License version 2 only, as published by the Free Software Foundation. |
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* However, the following notice accompanied the original version of this |
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* file: |
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* |
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* Copyright (c) 2008-2012, Stephen Colebourne & Michael Nascimento Santos |
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* |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* * Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* |
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* * Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* |
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* * Neither the name of JSR-310 nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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package java.time.format; |
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import java.text.DecimalFormatSymbols; |
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import java.util.Collections; |
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import java.util.HashSet; |
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import java.util.Locale; |
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import java.util.Objects; |
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import java.util.Set; |
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import java.util.concurrent.ConcurrentHashMap; |
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import java.util.concurrent.ConcurrentMap; |
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/** |
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* Localized decimal style used in date and time formatting. |
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* <p> |
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* A significant part of dealing with dates and times is the localization. |
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* This class acts as a central point for accessing the information. |
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* |
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* @implSpec |
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* This class is immutable and thread-safe. |
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* |
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* @since 1.8 |
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*/ |
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public final class DecimalStyle { |
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/** |
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* The standard set of non-localized decimal style symbols. |
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* <p> |
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* This uses standard ASCII characters for zero, positive, negative and a dot for the decimal point. |
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*/ |
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public static final DecimalStyle STANDARD = new DecimalStyle('0', '+', '-', '.'); |
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/** |
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* The cache of DecimalStyle instances. |
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*/ |
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private static final ConcurrentMap<Locale, DecimalStyle> CACHE = new ConcurrentHashMap<>(16, 0.75f, 2); |
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/** |
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* The zero digit. |
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*/ |
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private final char zeroDigit; |
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/** |
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* The positive sign. |
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*/ |
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private final char positiveSign; |
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/** |
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* The negative sign. |
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*/ |
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private final char negativeSign; |
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/** |
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* The decimal separator. |
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*/ |
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private final char decimalSeparator; |
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//----------------------------------------------------------------------- |
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/** |
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* Lists all the locales that are supported. |
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* <p> |
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* The locale 'en_US' will always be present. |
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* |
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* @return a Set of Locales for which localization is supported |
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*/ |
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public static Set<Locale> getAvailableLocales() { |
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Locale[] l = DecimalFormatSymbols.getAvailableLocales(); |
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Set<Locale> locales = new HashSet<>(l.length); |
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Collections.addAll(locales, l); |
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return locales; |
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} |
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/** |
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* Obtains the DecimalStyle for the default |
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* {@link java.util.Locale.Category#FORMAT FORMAT} locale. |
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* <p> |
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* This method provides access to locale sensitive decimal style symbols. |
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* <p> |
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* This is equivalent to calling |
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* {@link #of(Locale) |
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* of(Locale.getDefault(Locale.Category.FORMAT))}. |
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* |
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* @see java.util.Locale.Category#FORMAT |
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24256
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8034906: Fix typos, errors and Javadoc differences in java.time
scolebourne
parents:
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* @return the decimal style, not null |
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*/ |
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public static DecimalStyle ofDefaultLocale() { |
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return of(Locale.getDefault(Locale.Category.FORMAT)); |
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} |
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/** |
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* Obtains the DecimalStyle for the specified locale. |
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* <p> |
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* This method provides access to locale sensitive decimal style symbols. |
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* |
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* @param locale the locale, not null |
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* @return the decimal style, not null |
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*/ |
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public static DecimalStyle of(Locale locale) { |
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Objects.requireNonNull(locale, "locale"); |
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DecimalStyle info = CACHE.get(locale); |
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if (info == null) { |
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info = create(locale); |
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CACHE.putIfAbsent(locale, info); |
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info = CACHE.get(locale); |
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} |
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return info; |
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} |
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private static DecimalStyle create(Locale locale) { |
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DecimalFormatSymbols oldSymbols = DecimalFormatSymbols.getInstance(locale); |
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char zeroDigit = oldSymbols.getZeroDigit(); |
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char positiveSign = '+'; |
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char negativeSign = oldSymbols.getMinusSign(); |
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char decimalSeparator = oldSymbols.getDecimalSeparator(); |
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if (zeroDigit == '0' && negativeSign == '-' && decimalSeparator == '.') { |
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return STANDARD; |
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} |
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return new DecimalStyle(zeroDigit, positiveSign, negativeSign, decimalSeparator); |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Restricted constructor. |
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* |
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* @param zeroChar the character to use for the digit of zero |
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* @param positiveSignChar the character to use for the positive sign |
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* @param negativeSignChar the character to use for the negative sign |
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* @param decimalPointChar the character to use for the decimal point |
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*/ |
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private DecimalStyle(char zeroChar, char positiveSignChar, char negativeSignChar, char decimalPointChar) { |
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this.zeroDigit = zeroChar; |
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this.positiveSign = positiveSignChar; |
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this.negativeSign = negativeSignChar; |
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this.decimalSeparator = decimalPointChar; |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Gets the character that represents zero. |
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* <p> |
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* The character used to represent digits may vary by culture. |
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* This method specifies the zero character to use, which implies the characters for one to nine. |
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* |
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* @return the character for zero |
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*/ |
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public char getZeroDigit() { |
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return zeroDigit; |
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} |
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/** |
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* Returns a copy of the info with a new character that represents zero. |
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* <p> |
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* The character used to represent digits may vary by culture. |
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* This method specifies the zero character to use, which implies the characters for one to nine. |
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* |
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* @param zeroDigit the character for zero |
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* @return a copy with a new character that represents zero, not null |
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*/ |
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public DecimalStyle withZeroDigit(char zeroDigit) { |
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if (zeroDigit == this.zeroDigit) { |
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return this; |
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} |
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return new DecimalStyle(zeroDigit, positiveSign, negativeSign, decimalSeparator); |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Gets the character that represents the positive sign. |
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* <p> |
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* The character used to represent a positive number may vary by culture. |
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* This method specifies the character to use. |
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* |
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* @return the character for the positive sign |
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*/ |
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public char getPositiveSign() { |
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return positiveSign; |
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} |
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/** |
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* Returns a copy of the info with a new character that represents the positive sign. |
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* <p> |
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* The character used to represent a positive number may vary by culture. |
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* This method specifies the character to use. |
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* |
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* @param positiveSign the character for the positive sign |
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* @return a copy with a new character that represents the positive sign, not null |
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*/ |
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public DecimalStyle withPositiveSign(char positiveSign) { |
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if (positiveSign == this.positiveSign) { |
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return this; |
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} |
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return new DecimalStyle(zeroDigit, positiveSign, negativeSign, decimalSeparator); |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Gets the character that represents the negative sign. |
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* <p> |
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* The character used to represent a negative number may vary by culture. |
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* This method specifies the character to use. |
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* |
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* @return the character for the negative sign |
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*/ |
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public char getNegativeSign() { |
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return negativeSign; |
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} |
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/** |
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* Returns a copy of the info with a new character that represents the negative sign. |
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* <p> |
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* The character used to represent a negative number may vary by culture. |
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* This method specifies the character to use. |
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* |
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* @param negativeSign the character for the negative sign |
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* @return a copy with a new character that represents the negative sign, not null |
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*/ |
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public DecimalStyle withNegativeSign(char negativeSign) { |
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if (negativeSign == this.negativeSign) { |
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return this; |
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} |
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return new DecimalStyle(zeroDigit, positiveSign, negativeSign, decimalSeparator); |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Gets the character that represents the decimal point. |
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* <p> |
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* The character used to represent a decimal point may vary by culture. |
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* This method specifies the character to use. |
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* |
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* @return the character for the decimal point |
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*/ |
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public char getDecimalSeparator() { |
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return decimalSeparator; |
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} |
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/** |
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* Returns a copy of the info with a new character that represents the decimal point. |
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* <p> |
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* The character used to represent a decimal point may vary by culture. |
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* This method specifies the character to use. |
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* |
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* @param decimalSeparator the character for the decimal point |
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* @return a copy with a new character that represents the decimal point, not null |
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*/ |
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public DecimalStyle withDecimalSeparator(char decimalSeparator) { |
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if (decimalSeparator == this.decimalSeparator) { |
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return this; |
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} |
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return new DecimalStyle(zeroDigit, positiveSign, negativeSign, decimalSeparator); |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Checks whether the character is a digit, based on the currently set zero character. |
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* |
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* @param ch the character to check |
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* @return the value, 0 to 9, of the character, or -1 if not a digit |
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*/ |
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int convertToDigit(char ch) { |
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int val = ch - zeroDigit; |
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return (val >= 0 && val <= 9) ? val : -1; |
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} |
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/** |
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* Converts the input numeric text to the internationalized form using the zero character. |
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* |
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* @param numericText the text, consisting of digits 0 to 9, to convert, not null |
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* @return the internationalized text, not null |
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*/ |
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String convertNumberToI18N(String numericText) { |
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if (zeroDigit == '0') { |
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return numericText; |
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} |
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int diff = zeroDigit - '0'; |
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char[] array = numericText.toCharArray(); |
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for (int i = 0; i < array.length; i++) { |
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array[i] = (char) (array[i] + diff); |
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} |
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return new String(array); |
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} |
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//----------------------------------------------------------------------- |
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/** |
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24256
da9a41004459
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scolebourne
parents:
17474
diff
changeset
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* Checks if this DecimalStyle is equal to another DecimalStyle. |
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* |
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* @param obj the object to check, null returns false |
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* @return true if this is equal to the other date |
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*/ |
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@Override |
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public boolean equals(Object obj) { |
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if (this == obj) { |
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return true; |
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} |
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if (obj instanceof DecimalStyle) { |
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DecimalStyle other = (DecimalStyle) obj; |
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return (zeroDigit == other.zeroDigit && positiveSign == other.positiveSign && |
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negativeSign == other.negativeSign && decimalSeparator == other.decimalSeparator); |
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} |
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return false; |
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} |
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/** |
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* A hash code for this DecimalStyle. |
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* |
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* @return a suitable hash code |
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*/ |
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@Override |
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public int hashCode() { |
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return zeroDigit + positiveSign + negativeSign + decimalSeparator; |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Returns a string describing this DecimalStyle. |
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* |
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* @return a string description, not null |
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*/ |
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@Override |
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public String toString() { |
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return "DecimalStyle[" + zeroDigit + positiveSign + negativeSign + decimalSeparator + "]"; |
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} |
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} |