author | chegar |
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changeset 25859 | 3317bb8137f4 |
parent 19054 | jdk/src/share/classes/java/text/NumberFormat.java@a64012cb49d6 |
child 32649 | 2ee9017c7597 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1996, 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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* (C) Copyright Taligent, Inc. 1996, 1997 - All Rights Reserved |
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* (C) Copyright IBM Corp. 1996 - 1998 - All Rights Reserved |
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* |
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* The original version of this source code and documentation is copyrighted |
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* and owned by Taligent, Inc., a wholly-owned subsidiary of IBM. These |
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* materials are provided under terms of a License Agreement between Taligent |
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* and Sun. This technology is protected by multiple US and International |
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* patents. This notice and attribution to Taligent may not be removed. |
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* Taligent is a registered trademark of Taligent, Inc. |
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* |
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*/ |
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package java.text; |
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import java.io.InvalidObjectException; |
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import java.io.IOException; |
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import java.io.ObjectInputStream; |
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import java.io.ObjectOutputStream; |
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import java.math.BigInteger; |
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import java.math.RoundingMode; |
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import java.text.spi.NumberFormatProvider; |
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import java.util.Currency; |
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import java.util.HashMap; |
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import java.util.Hashtable; |
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import java.util.Locale; |
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import java.util.Map; |
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import java.util.ResourceBundle; |
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import java.util.concurrent.atomic.AtomicInteger; |
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import java.util.concurrent.atomic.AtomicLong; |
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import java.util.spi.LocaleServiceProvider; |
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import sun.util.locale.provider.LocaleProviderAdapter; |
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import sun.util.locale.provider.LocaleServiceProviderPool; |
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/** |
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* <code>NumberFormat</code> is the abstract base class for all number |
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* formats. This class provides the interface for formatting and parsing |
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* numbers. <code>NumberFormat</code> also provides methods for determining |
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* which locales have number formats, and what their names are. |
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* |
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* <p> |
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* <code>NumberFormat</code> helps you to format and parse numbers for any locale. |
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* Your code can be completely independent of the locale conventions for |
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* decimal points, thousands-separators, or even the particular decimal |
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* digits used, or whether the number format is even decimal. |
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* |
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* <p> |
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* To format a number for the current Locale, use one of the factory |
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* class methods: |
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* <blockquote> |
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* <pre>{@code |
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* myString = NumberFormat.getInstance().format(myNumber); |
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* }</pre> |
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* </blockquote> |
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* If you are formatting multiple numbers, it is |
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* more efficient to get the format and use it multiple times so that |
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* the system doesn't have to fetch the information about the local |
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* language and country conventions multiple times. |
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* <blockquote> |
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* <pre>{@code |
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* NumberFormat nf = NumberFormat.getInstance(); |
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* for (int i = 0; i < myNumber.length; ++i) { |
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* output.println(nf.format(myNumber[i]) + "; "); |
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* } |
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* }</pre> |
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* </blockquote> |
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* To format a number for a different Locale, specify it in the |
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* call to <code>getInstance</code>. |
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* <blockquote> |
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* <pre>{@code |
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* NumberFormat nf = NumberFormat.getInstance(Locale.FRENCH); |
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* }</pre> |
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* </blockquote> |
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* You can also use a <code>NumberFormat</code> to parse numbers: |
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* <blockquote> |
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* <pre>{@code |
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* myNumber = nf.parse(myString); |
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* }</pre> |
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* </blockquote> |
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* Use <code>getInstance</code> or <code>getNumberInstance</code> to get the |
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* normal number format. Use <code>getIntegerInstance</code> to get an |
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* integer number format. Use <code>getCurrencyInstance</code> to get the |
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* currency number format. And use <code>getPercentInstance</code> to get a |
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* format for displaying percentages. With this format, a fraction like |
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* 0.53 is displayed as 53%. |
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* |
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* <p> |
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* You can also control the display of numbers with such methods as |
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* <code>setMinimumFractionDigits</code>. |
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* If you want even more control over the format or parsing, |
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* or want to give your users more control, |
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* you can try casting the <code>NumberFormat</code> you get from the factory methods |
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* to a <code>DecimalFormat</code>. This will work for the vast majority |
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* of locales; just remember to put it in a <code>try</code> block in case you |
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* encounter an unusual one. |
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* |
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* <p> |
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* NumberFormat and DecimalFormat are designed such that some controls |
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* work for formatting and others work for parsing. The following is |
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* the detailed description for each these control methods, |
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* <p> |
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* setParseIntegerOnly : only affects parsing, e.g. |
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* if true, "3456.78" → 3456 (and leaves the parse position just after index 6) |
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* if false, "3456.78" → 3456.78 (and leaves the parse position just after index 8) |
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* This is independent of formatting. If you want to not show a decimal point |
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* where there might be no digits after the decimal point, use |
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* setDecimalSeparatorAlwaysShown. |
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* <p> |
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* setDecimalSeparatorAlwaysShown : only affects formatting, and only where |
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* there might be no digits after the decimal point, such as with a pattern |
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* like "#,##0.##", e.g., |
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* if true, 3456.00 → "3,456." |
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* if false, 3456.00 → "3456" |
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* This is independent of parsing. If you want parsing to stop at the decimal |
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* point, use setParseIntegerOnly. |
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* |
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* <p> |
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* You can also use forms of the <code>parse</code> and <code>format</code> |
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* methods with <code>ParsePosition</code> and <code>FieldPosition</code> to |
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* allow you to: |
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* <ul> |
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* <li> progressively parse through pieces of a string |
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* <li> align the decimal point and other areas |
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* </ul> |
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* For example, you can align numbers in two ways: |
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* <ol> |
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* <li> If you are using a monospaced font with spacing for alignment, |
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* you can pass the <code>FieldPosition</code> in your format call, with |
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* <code>field</code> = <code>INTEGER_FIELD</code>. On output, |
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* <code>getEndIndex</code> will be set to the offset between the |
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* last character of the integer and the decimal. Add |
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* (desiredSpaceCount - getEndIndex) spaces at the front of the string. |
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* |
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* <li> If you are using proportional fonts, |
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* instead of padding with spaces, measure the width |
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* of the string in pixels from the start to <code>getEndIndex</code>. |
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* Then move the pen by |
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* (desiredPixelWidth - widthToAlignmentPoint) before drawing the text. |
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* It also works where there is no decimal, but possibly additional |
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* characters at the end, e.g., with parentheses in negative |
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* numbers: "(12)" for -12. |
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* </ol> |
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* |
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* <h3><a name="synchronization">Synchronization</a></h3> |
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* |
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* <p> |
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* Number formats are generally not synchronized. |
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* It is recommended to create separate format instances for each thread. |
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* If multiple threads access a format concurrently, it must be synchronized |
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* externally. |
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* |
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* @see DecimalFormat |
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* @see ChoiceFormat |
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* @author Mark Davis |
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* @author Helena Shih |
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*/ |
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public abstract class NumberFormat extends Format { |
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/** |
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* Field constant used to construct a FieldPosition object. Signifies that |
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* the position of the integer part of a formatted number should be returned. |
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* @see java.text.FieldPosition |
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*/ |
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public static final int INTEGER_FIELD = 0; |
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/** |
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* Field constant used to construct a FieldPosition object. Signifies that |
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* the position of the fraction part of a formatted number should be returned. |
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* @see java.text.FieldPosition |
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*/ |
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public static final int FRACTION_FIELD = 1; |
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/** |
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* Sole constructor. (For invocation by subclass constructors, typically |
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* implicit.) |
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*/ |
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protected NumberFormat() { |
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} |
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/** |
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* Formats a number and appends the resulting text to the given string |
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* buffer. |
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* The number can be of any subclass of {@link java.lang.Number}. |
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* <p> |
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* This implementation extracts the number's value using |
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* {@link java.lang.Number#longValue()} for all integral type values that |
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* can be converted to <code>long</code> without loss of information, |
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* including <code>BigInteger</code> values with a |
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* {@link java.math.BigInteger#bitLength() bit length} of less than 64, |
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* and {@link java.lang.Number#doubleValue()} for all other types. It |
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* then calls |
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* {@link #format(long,java.lang.StringBuffer,java.text.FieldPosition)} |
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* or {@link #format(double,java.lang.StringBuffer,java.text.FieldPosition)}. |
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* This may result in loss of magnitude information and precision for |
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* <code>BigInteger</code> and <code>BigDecimal</code> values. |
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* @param number the number to format |
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* @param toAppendTo the <code>StringBuffer</code> to which the formatted |
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* text is to be appended |
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* @param pos On input: an alignment field, if desired. |
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* On output: the offsets of the alignment field. |
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* @return the value passed in as <code>toAppendTo</code> |
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* @exception IllegalArgumentException if <code>number</code> is |
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* null or not an instance of <code>Number</code>. |
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* @exception NullPointerException if <code>toAppendTo</code> or |
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* <code>pos</code> is null |
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* @exception ArithmeticException if rounding is needed with rounding |
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* mode being set to RoundingMode.UNNECESSARY |
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* @see java.text.FieldPosition |
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*/ |
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@Override |
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public StringBuffer format(Object number, |
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StringBuffer toAppendTo, |
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FieldPosition pos) { |
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if (number instanceof Long || number instanceof Integer || |
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number instanceof Short || number instanceof Byte || |
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number instanceof AtomicInteger || number instanceof AtomicLong || |
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(number instanceof BigInteger && |
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((BigInteger)number).bitLength() < 64)) { |
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return format(((Number)number).longValue(), toAppendTo, pos); |
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} else if (number instanceof Number) { |
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return format(((Number)number).doubleValue(), toAppendTo, pos); |
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} else { |
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throw new IllegalArgumentException("Cannot format given Object as a Number"); |
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} |
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} |
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/** |
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* Parses text from a string to produce a <code>Number</code>. |
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* <p> |
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* The method attempts to parse text starting at the index given by |
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* <code>pos</code>. |
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* If parsing succeeds, then the index of <code>pos</code> is updated |
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* to the index after the last character used (parsing does not necessarily |
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* use all characters up to the end of the string), and the parsed |
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* number is returned. The updated <code>pos</code> can be used to |
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* indicate the starting point for the next call to this method. |
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* If an error occurs, then the index of <code>pos</code> is not |
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* changed, the error index of <code>pos</code> is set to the index of |
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* the character where the error occurred, and null is returned. |
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* <p> |
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* See the {@link #parse(String, ParsePosition)} method for more information |
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* on number parsing. |
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* |
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* @param source A <code>String</code>, part of which should be parsed. |
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* @param pos A <code>ParsePosition</code> object with index and error |
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* index information as described above. |
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* @return A <code>Number</code> parsed from the string. In case of |
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* error, returns null. |
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* @exception NullPointerException if <code>pos</code> is null. |
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*/ |
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@Override |
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public final Object parseObject(String source, ParsePosition pos) { |
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return parse(source, pos); |
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} |
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/** |
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* Specialization of format. |
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* |
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* @param number the double number to format |
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* @return the formatted String |
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* @exception ArithmeticException if rounding is needed with rounding |
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* mode being set to RoundingMode.UNNECESSARY |
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* @see java.text.Format#format |
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*/ |
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public final String format(double number) { |
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// Use fast-path for double result if that works |
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String result = fastFormat(number); |
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if (result != null) |
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return result; |
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return format(number, new StringBuffer(), |
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DontCareFieldPosition.INSTANCE).toString(); |
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} |
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/* |
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* fastFormat() is supposed to be implemented in concrete subclasses only. |
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* Default implem always returns null. |
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*/ |
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String fastFormat(double number) { return null; } |
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/** |
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* Specialization of format. |
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* |
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* @param number the long number to format |
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* @return the formatted String |
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* @exception ArithmeticException if rounding is needed with rounding |
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* mode being set to RoundingMode.UNNECESSARY |
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* @see java.text.Format#format |
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*/ |
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public final String format(long number) { |
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return format(number, new StringBuffer(), |
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DontCareFieldPosition.INSTANCE).toString(); |
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} |
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/** |
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* Specialization of format. |
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* |
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* @param number the double number to format |
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* @param toAppendTo the StringBuffer to which the formatted text is to be |
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* appended |
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* @param pos the field position |
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* @return the formatted StringBuffer |
2 | 328 |
* @exception ArithmeticException if rounding is needed with rounding |
329 |
* mode being set to RoundingMode.UNNECESSARY |
|
330 |
* @see java.text.Format#format |
|
331 |
*/ |
|
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public abstract StringBuffer format(double number, |
|
333 |
StringBuffer toAppendTo, |
|
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FieldPosition pos); |
|
335 |
||
336 |
/** |
|
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* Specialization of format. |
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* |
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* @param number the long number to format |
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* @param toAppendTo the StringBuffer to which the formatted text is to be |
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* appended |
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* @param pos the field position |
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* @return the formatted StringBuffer |
2 | 344 |
* @exception ArithmeticException if rounding is needed with rounding |
345 |
* mode being set to RoundingMode.UNNECESSARY |
|
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* @see java.text.Format#format |
|
347 |
*/ |
|
348 |
public abstract StringBuffer format(long number, |
|
349 |
StringBuffer toAppendTo, |
|
350 |
FieldPosition pos); |
|
351 |
||
352 |
/** |
|
353 |
* Returns a Long if possible (e.g., within the range [Long.MIN_VALUE, |
|
354 |
* Long.MAX_VALUE] and with no decimals), otherwise a Double. |
|
355 |
* If IntegerOnly is set, will stop at a decimal |
|
356 |
* point (or equivalent; e.g., for rational numbers "1 2/3", will stop |
|
357 |
* after the 1). |
|
358 |
* Does not throw an exception; if no object can be parsed, index is |
|
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* unchanged! |
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* |
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* @param source the String to parse |
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* @param parsePosition the parse position |
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* @return the parsed value |
2 | 364 |
* @see java.text.NumberFormat#isParseIntegerOnly |
365 |
* @see java.text.Format#parseObject |
|
366 |
*/ |
|
367 |
public abstract Number parse(String source, ParsePosition parsePosition); |
|
368 |
||
369 |
/** |
|
370 |
* Parses text from the beginning of the given string to produce a number. |
|
371 |
* The method may not use the entire text of the given string. |
|
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* <p> |
|
373 |
* See the {@link #parse(String, ParsePosition)} method for more information |
|
374 |
* on number parsing. |
|
375 |
* |
|
376 |
* @param source A <code>String</code> whose beginning should be parsed. |
|
377 |
* @return A <code>Number</code> parsed from the string. |
|
378 |
* @exception ParseException if the beginning of the specified string |
|
379 |
* cannot be parsed. |
|
380 |
*/ |
|
381 |
public Number parse(String source) throws ParseException { |
|
382 |
ParsePosition parsePosition = new ParsePosition(0); |
|
383 |
Number result = parse(source, parsePosition); |
|
384 |
if (parsePosition.index == 0) { |
|
385 |
throw new ParseException("Unparseable number: \"" + source + "\"", |
|
386 |
parsePosition.errorIndex); |
|
387 |
} |
|
388 |
return result; |
|
389 |
} |
|
390 |
||
391 |
/** |
|
392 |
* Returns true if this format will parse numbers as integers only. |
|
393 |
* For example in the English locale, with ParseIntegerOnly true, the |
|
394 |
* string "1234." would be parsed as the integer value 1234 and parsing |
|
395 |
* would stop at the "." character. Of course, the exact format accepted |
|
396 |
* by the parse operation is locale dependant and determined by sub-classes |
|
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* of NumberFormat. |
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* |
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* @return {@code true} if numbers should be parsed as integers only; |
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* {@code false} otherwise |
2 | 401 |
*/ |
402 |
public boolean isParseIntegerOnly() { |
|
403 |
return parseIntegerOnly; |
|
404 |
} |
|
405 |
||
406 |
/** |
|
407 |
* Sets whether or not numbers should be parsed as integers only. |
|
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* |
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* @param value {@code true} if numbers should be parsed as integers only; |
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* {@code false} otherwise |
2 | 411 |
* @see #isParseIntegerOnly |
412 |
*/ |
|
413 |
public void setParseIntegerOnly(boolean value) { |
|
414 |
parseIntegerOnly = value; |
|
415 |
} |
|
416 |
||
417 |
//============== Locale Stuff ===================== |
|
418 |
||
419 |
/** |
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* Returns a general-purpose number format for the current default |
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* {@link java.util.Locale.Category#FORMAT FORMAT} locale. |
2 | 422 |
* This is the same as calling |
423 |
* {@link #getNumberInstance() getNumberInstance()}. |
|
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|
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* |
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* @return the {@code NumberFormat} instance for general-purpose number |
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* formatting |
2 | 427 |
*/ |
428 |
public final static NumberFormat getInstance() { |
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return getInstance(Locale.getDefault(Locale.Category.FORMAT), NUMBERSTYLE); |
2 | 430 |
} |
431 |
||
432 |
/** |
|
433 |
* Returns a general-purpose number format for the specified locale. |
|
434 |
* This is the same as calling |
|
435 |
* {@link #getNumberInstance(java.util.Locale) getNumberInstance(inLocale)}. |
|
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|
436 |
* |
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437 |
* @param inLocale the desired locale |
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438 |
* @return the {@code NumberFormat} instance for general-purpose number |
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439 |
* formatting |
2 | 440 |
*/ |
441 |
public static NumberFormat getInstance(Locale inLocale) { |
|
442 |
return getInstance(inLocale, NUMBERSTYLE); |
|
443 |
} |
|
444 |
||
445 |
/** |
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* Returns a general-purpose number format for the current default |
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447 |
* {@link java.util.Locale.Category#FORMAT FORMAT} locale. |
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|
448 |
* <p>This is equivalent to calling |
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|
449 |
* {@link #getNumberInstance(Locale) |
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* getNumberInstance(Locale.getDefault(Locale.Category.FORMAT))}. |
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|
451 |
* |
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452 |
* @return the {@code NumberFormat} instance for general-purpose number |
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|
453 |
* formatting |
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454 |
* @see java.util.Locale#getDefault(java.util.Locale.Category) |
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455 |
* @see java.util.Locale.Category#FORMAT |
2 | 456 |
*/ |
457 |
public final static NumberFormat getNumberInstance() { |
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458 |
return getInstance(Locale.getDefault(Locale.Category.FORMAT), NUMBERSTYLE); |
2 | 459 |
} |
460 |
||
461 |
/** |
|
462 |
* Returns a general-purpose number format for the specified locale. |
|
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|
463 |
* |
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464 |
* @param inLocale the desired locale |
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* @return the {@code NumberFormat} instance for general-purpose number |
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466 |
* formatting |
2 | 467 |
*/ |
468 |
public static NumberFormat getNumberInstance(Locale inLocale) { |
|
469 |
return getInstance(inLocale, NUMBERSTYLE); |
|
470 |
} |
|
471 |
||
472 |
/** |
|
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473 |
* Returns an integer number format for the current default |
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|
474 |
* {@link java.util.Locale.Category#FORMAT FORMAT} locale. The |
2 | 475 |
* returned number format is configured to round floating point numbers |
476 |
* to the nearest integer using half-even rounding (see {@link |
|
477 |
* java.math.RoundingMode#HALF_EVEN RoundingMode.HALF_EVEN}) for formatting, |
|
478 |
* and to parse only the integer part of an input string (see {@link |
|
479 |
* #isParseIntegerOnly isParseIntegerOnly}). |
|
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|
480 |
* <p>This is equivalent to calling |
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|
481 |
* {@link #getIntegerInstance(Locale) |
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|
482 |
* getIntegerInstance(Locale.getDefault(Locale.Category.FORMAT))}. |
2 | 483 |
* |
484 |
* @see #getRoundingMode() |
|
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485 |
* @see java.util.Locale#getDefault(java.util.Locale.Category) |
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486 |
* @see java.util.Locale.Category#FORMAT |
2 | 487 |
* @return a number format for integer values |
488 |
* @since 1.4 |
|
489 |
*/ |
|
490 |
public final static NumberFormat getIntegerInstance() { |
|
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|
491 |
return getInstance(Locale.getDefault(Locale.Category.FORMAT), INTEGERSTYLE); |
2 | 492 |
} |
493 |
||
494 |
/** |
|
495 |
* Returns an integer number format for the specified locale. The |
|
496 |
* returned number format is configured to round floating point numbers |
|
497 |
* to the nearest integer using half-even rounding (see {@link |
|
498 |
* java.math.RoundingMode#HALF_EVEN RoundingMode.HALF_EVEN}) for formatting, |
|
499 |
* and to parse only the integer part of an input string (see {@link |
|
500 |
* #isParseIntegerOnly isParseIntegerOnly}). |
|
501 |
* |
|
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502 |
* @param inLocale the desired locale |
2 | 503 |
* @see #getRoundingMode() |
504 |
* @return a number format for integer values |
|
505 |
* @since 1.4 |
|
506 |
*/ |
|
507 |
public static NumberFormat getIntegerInstance(Locale inLocale) { |
|
508 |
return getInstance(inLocale, INTEGERSTYLE); |
|
509 |
} |
|
510 |
||
511 |
/** |
|
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|
512 |
* Returns a currency format for the current default |
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|
513 |
* {@link java.util.Locale.Category#FORMAT FORMAT} locale. |
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|
514 |
* <p>This is equivalent to calling |
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|
515 |
* {@link #getCurrencyInstance(Locale) |
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|
516 |
* getCurrencyInstance(Locale.getDefault(Locale.Category.FORMAT))}. |
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|
517 |
* |
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|
518 |
* @return the {@code NumberFormat} instance for currency formatting |
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|
519 |
* @see java.util.Locale#getDefault(java.util.Locale.Category) |
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|
520 |
* @see java.util.Locale.Category#FORMAT |
2 | 521 |
*/ |
522 |
public final static NumberFormat getCurrencyInstance() { |
|
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|
523 |
return getInstance(Locale.getDefault(Locale.Category.FORMAT), CURRENCYSTYLE); |
2 | 524 |
} |
525 |
||
526 |
/** |
|
527 |
* Returns a currency format for the specified locale. |
|
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|
528 |
* |
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|
529 |
* @param inLocale the desired locale |
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|
530 |
* @return the {@code NumberFormat} instance for currency formatting |
2 | 531 |
*/ |
532 |
public static NumberFormat getCurrencyInstance(Locale inLocale) { |
|
533 |
return getInstance(inLocale, CURRENCYSTYLE); |
|
534 |
} |
|
535 |
||
536 |
/** |
|
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|
537 |
* Returns a percentage format for the current default |
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|
538 |
* {@link java.util.Locale.Category#FORMAT FORMAT} locale. |
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|
539 |
* <p>This is equivalent to calling |
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|
540 |
* {@link #getPercentInstance(Locale) |
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|
541 |
* getPercentInstance(Locale.getDefault(Locale.Category.FORMAT))}. |
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|
542 |
* |
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|
543 |
* @return the {@code NumberFormat} instance for percentage formatting |
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544 |
* @see java.util.Locale#getDefault(java.util.Locale.Category) |
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545 |
* @see java.util.Locale.Category#FORMAT |
2 | 546 |
*/ |
547 |
public final static NumberFormat getPercentInstance() { |
|
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|
548 |
return getInstance(Locale.getDefault(Locale.Category.FORMAT), PERCENTSTYLE); |
2 | 549 |
} |
550 |
||
551 |
/** |
|
552 |
* Returns a percentage format for the specified locale. |
|
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|
553 |
* |
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554 |
* @param inLocale the desired locale |
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|
555 |
* @return the {@code NumberFormat} instance for percentage formatting |
2 | 556 |
*/ |
557 |
public static NumberFormat getPercentInstance(Locale inLocale) { |
|
558 |
return getInstance(inLocale, PERCENTSTYLE); |
|
559 |
} |
|
560 |
||
561 |
/** |
|
562 |
* Returns a scientific format for the current default locale. |
|
563 |
*/ |
|
564 |
/*public*/ final static NumberFormat getScientificInstance() { |
|
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|
565 |
return getInstance(Locale.getDefault(Locale.Category.FORMAT), SCIENTIFICSTYLE); |
2 | 566 |
} |
567 |
||
568 |
/** |
|
569 |
* Returns a scientific format for the specified locale. |
|
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|
570 |
* |
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|
571 |
* @param inLocale the desired locale |
2 | 572 |
*/ |
573 |
/*public*/ static NumberFormat getScientificInstance(Locale inLocale) { |
|
574 |
return getInstance(inLocale, SCIENTIFICSTYLE); |
|
575 |
} |
|
576 |
||
577 |
/** |
|
578 |
* Returns an array of all locales for which the |
|
579 |
* <code>get*Instance</code> methods of this class can return |
|
580 |
* localized instances. |
|
581 |
* The returned array represents the union of locales supported by the Java |
|
582 |
* runtime and by installed |
|
583 |
* {@link java.text.spi.NumberFormatProvider NumberFormatProvider} implementations. |
|
584 |
* It must contain at least a <code>Locale</code> instance equal to |
|
585 |
* {@link java.util.Locale#US Locale.US}. |
|
586 |
* |
|
587 |
* @return An array of locales for which localized |
|
588 |
* <code>NumberFormat</code> instances are available. |
|
589 |
*/ |
|
590 |
public static Locale[] getAvailableLocales() { |
|
591 |
LocaleServiceProviderPool pool = |
|
592 |
LocaleServiceProviderPool.getPool(NumberFormatProvider.class); |
|
593 |
return pool.getAvailableLocales(); |
|
594 |
} |
|
595 |
||
596 |
/** |
|
13583 | 597 |
* Overrides hashCode. |
2 | 598 |
*/ |
13583 | 599 |
@Override |
2 | 600 |
public int hashCode() { |
601 |
return maximumIntegerDigits * 37 + maxFractionDigits; |
|
602 |
// just enough fields for a reasonable distribution |
|
603 |
} |
|
604 |
||
605 |
/** |
|
13583 | 606 |
* Overrides equals. |
2 | 607 |
*/ |
13583 | 608 |
@Override |
2 | 609 |
public boolean equals(Object obj) { |
610 |
if (obj == null) { |
|
611 |
return false; |
|
612 |
} |
|
613 |
if (this == obj) { |
|
614 |
return true; |
|
615 |
} |
|
616 |
if (getClass() != obj.getClass()) { |
|
617 |
return false; |
|
618 |
} |
|
619 |
NumberFormat other = (NumberFormat) obj; |
|
620 |
return (maximumIntegerDigits == other.maximumIntegerDigits |
|
621 |
&& minimumIntegerDigits == other.minimumIntegerDigits |
|
622 |
&& maximumFractionDigits == other.maximumFractionDigits |
|
623 |
&& minimumFractionDigits == other.minimumFractionDigits |
|
624 |
&& groupingUsed == other.groupingUsed |
|
625 |
&& parseIntegerOnly == other.parseIntegerOnly); |
|
626 |
} |
|
627 |
||
628 |
/** |
|
13583 | 629 |
* Overrides Cloneable. |
2 | 630 |
*/ |
13583 | 631 |
@Override |
2 | 632 |
public Object clone() { |
633 |
NumberFormat other = (NumberFormat) super.clone(); |
|
634 |
return other; |
|
635 |
} |
|
636 |
||
637 |
/** |
|
638 |
* Returns true if grouping is used in this format. For example, in the |
|
639 |
* English locale, with grouping on, the number 1234567 might be formatted |
|
640 |
* as "1,234,567". The grouping separator as well as the size of each group |
|
641 |
* is locale dependant and is determined by sub-classes of NumberFormat. |
|
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|
642 |
* |
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|
643 |
* @return {@code true} if grouping is used; |
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|
644 |
* {@code false} otherwise |
2 | 645 |
* @see #setGroupingUsed |
646 |
*/ |
|
647 |
public boolean isGroupingUsed() { |
|
648 |
return groupingUsed; |
|
649 |
} |
|
650 |
||
651 |
/** |
|
652 |
* Set whether or not grouping will be used in this format. |
|
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|
653 |
* |
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|
654 |
* @param newValue {@code true} if grouping is used; |
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|
655 |
* {@code false} otherwise |
2 | 656 |
* @see #isGroupingUsed |
657 |
*/ |
|
658 |
public void setGroupingUsed(boolean newValue) { |
|
659 |
groupingUsed = newValue; |
|
660 |
} |
|
661 |
||
662 |
/** |
|
663 |
* Returns the maximum number of digits allowed in the integer portion of a |
|
664 |
* number. |
|
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|
665 |
* |
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|
666 |
* @return the maximum number of digits |
2 | 667 |
* @see #setMaximumIntegerDigits |
668 |
*/ |
|
669 |
public int getMaximumIntegerDigits() { |
|
670 |
return maximumIntegerDigits; |
|
671 |
} |
|
672 |
||
673 |
/** |
|
674 |
* Sets the maximum number of digits allowed in the integer portion of a |
|
19054
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|
675 |
* number. maximumIntegerDigits must be ≥ minimumIntegerDigits. If the |
2 | 676 |
* new value for maximumIntegerDigits is less than the current value |
677 |
* of minimumIntegerDigits, then minimumIntegerDigits will also be set to |
|
678 |
* the new value. |
|
19054
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|
679 |
* |
2 | 680 |
* @param newValue the maximum number of integer digits to be shown; if |
681 |
* less than zero, then zero is used. The concrete subclass may enforce an |
|
682 |
* upper limit to this value appropriate to the numeric type being formatted. |
|
683 |
* @see #getMaximumIntegerDigits |
|
684 |
*/ |
|
685 |
public void setMaximumIntegerDigits(int newValue) { |
|
686 |
maximumIntegerDigits = Math.max(0,newValue); |
|
687 |
if (minimumIntegerDigits > maximumIntegerDigits) { |
|
688 |
minimumIntegerDigits = maximumIntegerDigits; |
|
689 |
} |
|
690 |
} |
|
691 |
||
692 |
/** |
|
693 |
* Returns the minimum number of digits allowed in the integer portion of a |
|
694 |
* number. |
|
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|
695 |
* |
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|
696 |
* @return the minimum number of digits |
2 | 697 |
* @see #setMinimumIntegerDigits |
698 |
*/ |
|
699 |
public int getMinimumIntegerDigits() { |
|
700 |
return minimumIntegerDigits; |
|
701 |
} |
|
702 |
||
703 |
/** |
|
704 |
* Sets the minimum number of digits allowed in the integer portion of a |
|
19054
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|
705 |
* number. minimumIntegerDigits must be ≤ maximumIntegerDigits. If the |
2 | 706 |
* new value for minimumIntegerDigits exceeds the current value |
707 |
* of maximumIntegerDigits, then maximumIntegerDigits will also be set to |
|
708 |
* the new value |
|
19054
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|
709 |
* |
2 | 710 |
* @param newValue the minimum number of integer digits to be shown; if |
711 |
* less than zero, then zero is used. The concrete subclass may enforce an |
|
712 |
* upper limit to this value appropriate to the numeric type being formatted. |
|
713 |
* @see #getMinimumIntegerDigits |
|
714 |
*/ |
|
715 |
public void setMinimumIntegerDigits(int newValue) { |
|
716 |
minimumIntegerDigits = Math.max(0,newValue); |
|
717 |
if (minimumIntegerDigits > maximumIntegerDigits) { |
|
718 |
maximumIntegerDigits = minimumIntegerDigits; |
|
719 |
} |
|
720 |
} |
|
721 |
||
722 |
/** |
|
723 |
* Returns the maximum number of digits allowed in the fraction portion of a |
|
724 |
* number. |
|
19054
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|
725 |
* |
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|
726 |
* @return the maximum number of digits. |
2 | 727 |
* @see #setMaximumFractionDigits |
728 |
*/ |
|
729 |
public int getMaximumFractionDigits() { |
|
730 |
return maximumFractionDigits; |
|
731 |
} |
|
732 |
||
733 |
/** |
|
734 |
* Sets the maximum number of digits allowed in the fraction portion of a |
|
19054
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|
735 |
* number. maximumFractionDigits must be ≥ minimumFractionDigits. If the |
2 | 736 |
* new value for maximumFractionDigits is less than the current value |
737 |
* of minimumFractionDigits, then minimumFractionDigits will also be set to |
|
738 |
* the new value. |
|
19054
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|
739 |
* |
2 | 740 |
* @param newValue the maximum number of fraction digits to be shown; if |
741 |
* less than zero, then zero is used. The concrete subclass may enforce an |
|
742 |
* upper limit to this value appropriate to the numeric type being formatted. |
|
743 |
* @see #getMaximumFractionDigits |
|
744 |
*/ |
|
745 |
public void setMaximumFractionDigits(int newValue) { |
|
746 |
maximumFractionDigits = Math.max(0,newValue); |
|
747 |
if (maximumFractionDigits < minimumFractionDigits) { |
|
748 |
minimumFractionDigits = maximumFractionDigits; |
|
749 |
} |
|
750 |
} |
|
751 |
||
752 |
/** |
|
753 |
* Returns the minimum number of digits allowed in the fraction portion of a |
|
754 |
* number. |
|
19054
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|
755 |
* |
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|
756 |
* @return the minimum number of digits |
2 | 757 |
* @see #setMinimumFractionDigits |
758 |
*/ |
|
759 |
public int getMinimumFractionDigits() { |
|
760 |
return minimumFractionDigits; |
|
761 |
} |
|
762 |
||
763 |
/** |
|
764 |
* Sets the minimum number of digits allowed in the fraction portion of a |
|
19054
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|
765 |
* number. minimumFractionDigits must be ≤ maximumFractionDigits. If the |
2 | 766 |
* new value for minimumFractionDigits exceeds the current value |
767 |
* of maximumFractionDigits, then maximumIntegerDigits will also be set to |
|
768 |
* the new value |
|
19054
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changeset
|
769 |
* |
2 | 770 |
* @param newValue the minimum number of fraction digits to be shown; if |
771 |
* less than zero, then zero is used. The concrete subclass may enforce an |
|
772 |
* upper limit to this value appropriate to the numeric type being formatted. |
|
773 |
* @see #getMinimumFractionDigits |
|
774 |
*/ |
|
775 |
public void setMinimumFractionDigits(int newValue) { |
|
776 |
minimumFractionDigits = Math.max(0,newValue); |
|
777 |
if (maximumFractionDigits < minimumFractionDigits) { |
|
778 |
maximumFractionDigits = minimumFractionDigits; |
|
779 |
} |
|
780 |
} |
|
781 |
||
782 |
/** |
|
783 |
* Gets the currency used by this number format when formatting |
|
784 |
* currency values. The initial value is derived in a locale dependent |
|
785 |
* way. The returned value may be null if no valid |
|
786 |
* currency could be determined and no currency has been set using |
|
787 |
* {@link #setCurrency(java.util.Currency) setCurrency}. |
|
788 |
* <p> |
|
789 |
* The default implementation throws |
|
790 |
* <code>UnsupportedOperationException</code>. |
|
791 |
* |
|
792 |
* @return the currency used by this number format, or <code>null</code> |
|
793 |
* @exception UnsupportedOperationException if the number format class |
|
794 |
* doesn't implement currency formatting |
|
795 |
* @since 1.4 |
|
796 |
*/ |
|
797 |
public Currency getCurrency() { |
|
798 |
throw new UnsupportedOperationException(); |
|
799 |
} |
|
800 |
||
801 |
/** |
|
802 |
* Sets the currency used by this number format when formatting |
|
803 |
* currency values. This does not update the minimum or maximum |
|
804 |
* number of fraction digits used by the number format. |
|
805 |
* <p> |
|
806 |
* The default implementation throws |
|
807 |
* <code>UnsupportedOperationException</code>. |
|
808 |
* |
|
809 |
* @param currency the new currency to be used by this number format |
|
810 |
* @exception UnsupportedOperationException if the number format class |
|
811 |
* doesn't implement currency formatting |
|
812 |
* @exception NullPointerException if <code>currency</code> is null |
|
813 |
* @since 1.4 |
|
814 |
*/ |
|
815 |
public void setCurrency(Currency currency) { |
|
816 |
throw new UnsupportedOperationException(); |
|
817 |
} |
|
818 |
||
819 |
/** |
|
820 |
* Gets the {@link java.math.RoundingMode} used in this NumberFormat. |
|
821 |
* The default implementation of this method in NumberFormat |
|
822 |
* always throws {@link java.lang.UnsupportedOperationException}. |
|
823 |
* Subclasses which handle different rounding modes should override |
|
824 |
* this method. |
|
825 |
* |
|
826 |
* @exception UnsupportedOperationException The default implementation |
|
827 |
* always throws this exception |
|
828 |
* @return The <code>RoundingMode</code> used for this NumberFormat. |
|
829 |
* @see #setRoundingMode(RoundingMode) |
|
830 |
* @since 1.6 |
|
831 |
*/ |
|
832 |
public RoundingMode getRoundingMode() { |
|
833 |
throw new UnsupportedOperationException(); |
|
834 |
} |
|
835 |
||
836 |
/** |
|
837 |
* Sets the {@link java.math.RoundingMode} used in this NumberFormat. |
|
838 |
* The default implementation of this method in NumberFormat always |
|
839 |
* throws {@link java.lang.UnsupportedOperationException}. |
|
840 |
* Subclasses which handle different rounding modes should override |
|
841 |
* this method. |
|
842 |
* |
|
843 |
* @exception UnsupportedOperationException The default implementation |
|
844 |
* always throws this exception |
|
845 |
* @exception NullPointerException if <code>roundingMode</code> is null |
|
846 |
* @param roundingMode The <code>RoundingMode</code> to be used |
|
847 |
* @see #getRoundingMode() |
|
848 |
* @since 1.6 |
|
849 |
*/ |
|
850 |
public void setRoundingMode(RoundingMode roundingMode) { |
|
851 |
throw new UnsupportedOperationException(); |
|
852 |
} |
|
853 |
||
854 |
// =======================privates=============================== |
|
855 |
||
856 |
private static NumberFormat getInstance(Locale desiredLocale, |
|
857 |
int choice) { |
|
13583 | 858 |
LocaleProviderAdapter adapter; |
859 |
adapter = LocaleProviderAdapter.getAdapter(NumberFormatProvider.class, |
|
860 |
desiredLocale); |
|
861 |
NumberFormat numberFormat = getInstance(adapter, desiredLocale, choice); |
|
862 |
if (numberFormat == null) { |
|
863 |
numberFormat = getInstance(LocaleProviderAdapter.forJRE(), |
|
864 |
desiredLocale, choice); |
|
2 | 865 |
} |
13583 | 866 |
return numberFormat; |
867 |
} |
|
2 | 868 |
|
13583 | 869 |
private static NumberFormat getInstance(LocaleProviderAdapter adapter, |
870 |
Locale locale, int choice) { |
|
871 |
NumberFormatProvider provider = adapter.getNumberFormatProvider(); |
|
872 |
NumberFormat numberFormat = null; |
|
873 |
switch (choice) { |
|
874 |
case NUMBERSTYLE: |
|
875 |
numberFormat = provider.getNumberInstance(locale); |
|
876 |
break; |
|
877 |
case PERCENTSTYLE: |
|
878 |
numberFormat = provider.getPercentInstance(locale); |
|
879 |
break; |
|
880 |
case CURRENCYSTYLE: |
|
881 |
numberFormat = provider.getCurrencyInstance(locale); |
|
882 |
break; |
|
883 |
case INTEGERSTYLE: |
|
884 |
numberFormat = provider.getIntegerInstance(locale); |
|
885 |
break; |
|
2 | 886 |
} |
13583 | 887 |
return numberFormat; |
2 | 888 |
} |
889 |
||
890 |
/** |
|
891 |
* First, read in the default serializable data. |
|
892 |
* |
|
893 |
* Then, if <code>serialVersionOnStream</code> is less than 1, indicating that |
|
894 |
* the stream was written by JDK 1.1, |
|
895 |
* set the <code>int</code> fields such as <code>maximumIntegerDigits</code> |
|
896 |
* to be equal to the <code>byte</code> fields such as <code>maxIntegerDigits</code>, |
|
897 |
* since the <code>int</code> fields were not present in JDK 1.1. |
|
898 |
* Finally, set serialVersionOnStream back to the maximum allowed value so that |
|
899 |
* default serialization will work properly if this object is streamed out again. |
|
900 |
* |
|
901 |
* <p>If <code>minimumIntegerDigits</code> is greater than |
|
902 |
* <code>maximumIntegerDigits</code> or <code>minimumFractionDigits</code> |
|
903 |
* is greater than <code>maximumFractionDigits</code>, then the stream data |
|
904 |
* is invalid and this method throws an <code>InvalidObjectException</code>. |
|
905 |
* In addition, if any of these values is negative, then this method throws |
|
906 |
* an <code>InvalidObjectException</code>. |
|
907 |
* |
|
908 |
* @since 1.2 |
|
909 |
*/ |
|
910 |
private void readObject(ObjectInputStream stream) |
|
911 |
throws IOException, ClassNotFoundException |
|
912 |
{ |
|
913 |
stream.defaultReadObject(); |
|
914 |
if (serialVersionOnStream < 1) { |
|
915 |
// Didn't have additional int fields, reassign to use them. |
|
916 |
maximumIntegerDigits = maxIntegerDigits; |
|
917 |
minimumIntegerDigits = minIntegerDigits; |
|
918 |
maximumFractionDigits = maxFractionDigits; |
|
919 |
minimumFractionDigits = minFractionDigits; |
|
920 |
} |
|
921 |
if (minimumIntegerDigits > maximumIntegerDigits || |
|
922 |
minimumFractionDigits > maximumFractionDigits || |
|
923 |
minimumIntegerDigits < 0 || minimumFractionDigits < 0) { |
|
924 |
throw new InvalidObjectException("Digit count range invalid"); |
|
925 |
} |
|
926 |
serialVersionOnStream = currentSerialVersion; |
|
927 |
} |
|
928 |
||
929 |
/** |
|
930 |
* Write out the default serializable data, after first setting |
|
931 |
* the <code>byte</code> fields such as <code>maxIntegerDigits</code> to be |
|
932 |
* equal to the <code>int</code> fields such as <code>maximumIntegerDigits</code> |
|
933 |
* (or to <code>Byte.MAX_VALUE</code>, whichever is smaller), for compatibility |
|
934 |
* with the JDK 1.1 version of the stream format. |
|
935 |
* |
|
936 |
* @since 1.2 |
|
937 |
*/ |
|
938 |
private void writeObject(ObjectOutputStream stream) |
|
939 |
throws IOException |
|
940 |
{ |
|
941 |
maxIntegerDigits = (maximumIntegerDigits > Byte.MAX_VALUE) ? |
|
942 |
Byte.MAX_VALUE : (byte)maximumIntegerDigits; |
|
943 |
minIntegerDigits = (minimumIntegerDigits > Byte.MAX_VALUE) ? |
|
944 |
Byte.MAX_VALUE : (byte)minimumIntegerDigits; |
|
945 |
maxFractionDigits = (maximumFractionDigits > Byte.MAX_VALUE) ? |
|
946 |
Byte.MAX_VALUE : (byte)maximumFractionDigits; |
|
947 |
minFractionDigits = (minimumFractionDigits > Byte.MAX_VALUE) ? |
|
948 |
Byte.MAX_VALUE : (byte)minimumFractionDigits; |
|
949 |
stream.defaultWriteObject(); |
|
950 |
} |
|
951 |
||
952 |
// Constants used by factory methods to specify a style of format. |
|
953 |
private static final int NUMBERSTYLE = 0; |
|
954 |
private static final int CURRENCYSTYLE = 1; |
|
955 |
private static final int PERCENTSTYLE = 2; |
|
956 |
private static final int SCIENTIFICSTYLE = 3; |
|
957 |
private static final int INTEGERSTYLE = 4; |
|
958 |
||
959 |
/** |
|
960 |
* True if the grouping (i.e. thousands) separator is used when |
|
961 |
* formatting and parsing numbers. |
|
962 |
* |
|
963 |
* @serial |
|
964 |
* @see #isGroupingUsed |
|
965 |
*/ |
|
966 |
private boolean groupingUsed = true; |
|
967 |
||
968 |
/** |
|
969 |
* The maximum number of digits allowed in the integer portion of a |
|
970 |
* number. <code>maxIntegerDigits</code> must be greater than or equal to |
|
971 |
* <code>minIntegerDigits</code>. |
|
972 |
* <p> |
|
973 |
* <strong>Note:</strong> This field exists only for serialization |
|
974 |
* compatibility with JDK 1.1. In Java platform 2 v1.2 and higher, the new |
|
975 |
* <code>int</code> field <code>maximumIntegerDigits</code> is used instead. |
|
976 |
* When writing to a stream, <code>maxIntegerDigits</code> is set to |
|
977 |
* <code>maximumIntegerDigits</code> or <code>Byte.MAX_VALUE</code>, |
|
978 |
* whichever is smaller. When reading from a stream, this field is used |
|
979 |
* only if <code>serialVersionOnStream</code> is less than 1. |
|
980 |
* |
|
981 |
* @serial |
|
982 |
* @see #getMaximumIntegerDigits |
|
983 |
*/ |
|
984 |
private byte maxIntegerDigits = 40; |
|
985 |
||
986 |
/** |
|
987 |
* The minimum number of digits allowed in the integer portion of a |
|
988 |
* number. <code>minimumIntegerDigits</code> must be less than or equal to |
|
989 |
* <code>maximumIntegerDigits</code>. |
|
990 |
* <p> |
|
991 |
* <strong>Note:</strong> This field exists only for serialization |
|
992 |
* compatibility with JDK 1.1. In Java platform 2 v1.2 and higher, the new |
|
993 |
* <code>int</code> field <code>minimumIntegerDigits</code> is used instead. |
|
994 |
* When writing to a stream, <code>minIntegerDigits</code> is set to |
|
995 |
* <code>minimumIntegerDigits</code> or <code>Byte.MAX_VALUE</code>, |
|
996 |
* whichever is smaller. When reading from a stream, this field is used |
|
997 |
* only if <code>serialVersionOnStream</code> is less than 1. |
|
998 |
* |
|
999 |
* @serial |
|
1000 |
* @see #getMinimumIntegerDigits |
|
1001 |
*/ |
|
1002 |
private byte minIntegerDigits = 1; |
|
1003 |
||
1004 |
/** |
|
1005 |
* The maximum number of digits allowed in the fractional portion of a |
|
1006 |
* number. <code>maximumFractionDigits</code> must be greater than or equal to |
|
1007 |
* <code>minimumFractionDigits</code>. |
|
1008 |
* <p> |
|
1009 |
* <strong>Note:</strong> This field exists only for serialization |
|
1010 |
* compatibility with JDK 1.1. In Java platform 2 v1.2 and higher, the new |
|
1011 |
* <code>int</code> field <code>maximumFractionDigits</code> is used instead. |
|
1012 |
* When writing to a stream, <code>maxFractionDigits</code> is set to |
|
1013 |
* <code>maximumFractionDigits</code> or <code>Byte.MAX_VALUE</code>, |
|
1014 |
* whichever is smaller. When reading from a stream, this field is used |
|
1015 |
* only if <code>serialVersionOnStream</code> is less than 1. |
|
1016 |
* |
|
1017 |
* @serial |
|
1018 |
* @see #getMaximumFractionDigits |
|
1019 |
*/ |
|
1020 |
private byte maxFractionDigits = 3; // invariant, >= minFractionDigits |
|
1021 |
||
1022 |
/** |
|
1023 |
* The minimum number of digits allowed in the fractional portion of a |
|
1024 |
* number. <code>minimumFractionDigits</code> must be less than or equal to |
|
1025 |
* <code>maximumFractionDigits</code>. |
|
1026 |
* <p> |
|
1027 |
* <strong>Note:</strong> This field exists only for serialization |
|
1028 |
* compatibility with JDK 1.1. In Java platform 2 v1.2 and higher, the new |
|
1029 |
* <code>int</code> field <code>minimumFractionDigits</code> is used instead. |
|
1030 |
* When writing to a stream, <code>minFractionDigits</code> is set to |
|
1031 |
* <code>minimumFractionDigits</code> or <code>Byte.MAX_VALUE</code>, |
|
1032 |
* whichever is smaller. When reading from a stream, this field is used |
|
1033 |
* only if <code>serialVersionOnStream</code> is less than 1. |
|
1034 |
* |
|
1035 |
* @serial |
|
1036 |
* @see #getMinimumFractionDigits |
|
1037 |
*/ |
|
1038 |
private byte minFractionDigits = 0; |
|
1039 |
||
1040 |
/** |
|
1041 |
* True if this format will parse numbers as integers only. |
|
1042 |
* |
|
1043 |
* @serial |
|
1044 |
* @see #isParseIntegerOnly |
|
1045 |
*/ |
|
1046 |
private boolean parseIntegerOnly = false; |
|
1047 |
||
1048 |
// new fields for 1.2. byte is too small for integer digits. |
|
1049 |
||
1050 |
/** |
|
1051 |
* The maximum number of digits allowed in the integer portion of a |
|
1052 |
* number. <code>maximumIntegerDigits</code> must be greater than or equal to |
|
1053 |
* <code>minimumIntegerDigits</code>. |
|
1054 |
* |
|
1055 |
* @serial |
|
1056 |
* @since 1.2 |
|
1057 |
* @see #getMaximumIntegerDigits |
|
1058 |
*/ |
|
1059 |
private int maximumIntegerDigits = 40; |
|
1060 |
||
1061 |
/** |
|
1062 |
* The minimum number of digits allowed in the integer portion of a |
|
1063 |
* number. <code>minimumIntegerDigits</code> must be less than or equal to |
|
1064 |
* <code>maximumIntegerDigits</code>. |
|
1065 |
* |
|
1066 |
* @serial |
|
1067 |
* @since 1.2 |
|
1068 |
* @see #getMinimumIntegerDigits |
|
1069 |
*/ |
|
1070 |
private int minimumIntegerDigits = 1; |
|
1071 |
||
1072 |
/** |
|
1073 |
* The maximum number of digits allowed in the fractional portion of a |
|
1074 |
* number. <code>maximumFractionDigits</code> must be greater than or equal to |
|
1075 |
* <code>minimumFractionDigits</code>. |
|
1076 |
* |
|
1077 |
* @serial |
|
1078 |
* @since 1.2 |
|
1079 |
* @see #getMaximumFractionDigits |
|
1080 |
*/ |
|
1081 |
private int maximumFractionDigits = 3; // invariant, >= minFractionDigits |
|
1082 |
||
1083 |
/** |
|
1084 |
* The minimum number of digits allowed in the fractional portion of a |
|
1085 |
* number. <code>minimumFractionDigits</code> must be less than or equal to |
|
1086 |
* <code>maximumFractionDigits</code>. |
|
1087 |
* |
|
1088 |
* @serial |
|
1089 |
* @since 1.2 |
|
1090 |
* @see #getMinimumFractionDigits |
|
1091 |
*/ |
|
1092 |
private int minimumFractionDigits = 0; |
|
1093 |
||
1094 |
static final int currentSerialVersion = 1; |
|
1095 |
||
1096 |
/** |
|
1097 |
* Describes the version of <code>NumberFormat</code> present on the stream. |
|
1098 |
* Possible values are: |
|
1099 |
* <ul> |
|
1100 |
* <li><b>0</b> (or uninitialized): the JDK 1.1 version of the stream format. |
|
1101 |
* In this version, the <code>int</code> fields such as |
|
1102 |
* <code>maximumIntegerDigits</code> were not present, and the <code>byte</code> |
|
1103 |
* fields such as <code>maxIntegerDigits</code> are used instead. |
|
1104 |
* |
|
1105 |
* <li><b>1</b>: the 1.2 version of the stream format. The values of the |
|
1106 |
* <code>byte</code> fields such as <code>maxIntegerDigits</code> are ignored, |
|
1107 |
* and the <code>int</code> fields such as <code>maximumIntegerDigits</code> |
|
1108 |
* are used instead. |
|
1109 |
* </ul> |
|
1110 |
* When streaming out a <code>NumberFormat</code>, the most recent format |
|
1111 |
* (corresponding to the highest allowable <code>serialVersionOnStream</code>) |
|
1112 |
* is always written. |
|
1113 |
* |
|
1114 |
* @serial |
|
1115 |
* @since 1.2 |
|
1116 |
*/ |
|
1117 |
private int serialVersionOnStream = currentSerialVersion; |
|
1118 |
||
1119 |
// Removed "implements Cloneable" clause. Needs to update serialization |
|
1120 |
// ID for backward compatibility. |
|
1121 |
static final long serialVersionUID = -2308460125733713944L; |
|
1122 |
||
1123 |
||
1124 |
// |
|
1125 |
// class for AttributedCharacterIterator attributes |
|
1126 |
// |
|
1127 |
/** |
|
1128 |
* Defines constants that are used as attribute keys in the |
|
1129 |
* <code>AttributedCharacterIterator</code> returned |
|
1130 |
* from <code>NumberFormat.formatToCharacterIterator</code> and as |
|
1131 |
* field identifiers in <code>FieldPosition</code>. |
|
1132 |
* |
|
1133 |
* @since 1.4 |
|
1134 |
*/ |
|
1135 |
public static class Field extends Format.Field { |
|
1136 |
||
1137 |
// Proclaim serial compatibility with 1.4 FCS |
|
1138 |
private static final long serialVersionUID = 7494728892700160890L; |
|
1139 |
||
1140 |
// table of all instances in this class, used by readResolve |
|
12848 | 1141 |
private static final Map<String, Field> instanceMap = new HashMap<>(11); |
2 | 1142 |
|
1143 |
/** |
|
1144 |
* Creates a Field instance with the specified |
|
1145 |
* name. |
|
1146 |
* |
|
1147 |
* @param name Name of the attribute |
|
1148 |
*/ |
|
1149 |
protected Field(String name) { |
|
1150 |
super(name); |
|
1151 |
if (this.getClass() == NumberFormat.Field.class) { |
|
1152 |
instanceMap.put(name, this); |
|
1153 |
} |
|
1154 |
} |
|
1155 |
||
1156 |
/** |
|
1157 |
* Resolves instances being deserialized to the predefined constants. |
|
1158 |
* |
|
1159 |
* @throws InvalidObjectException if the constant could not be resolved. |
|
1160 |
* @return resolved NumberFormat.Field constant |
|
1161 |
*/ |
|
13583 | 1162 |
@Override |
2 | 1163 |
protected Object readResolve() throws InvalidObjectException { |
1164 |
if (this.getClass() != NumberFormat.Field.class) { |
|
1165 |
throw new InvalidObjectException("subclass didn't correctly implement readResolve"); |
|
1166 |
} |
|
1167 |
||
1168 |
Object instance = instanceMap.get(getName()); |
|
1169 |
if (instance != null) { |
|
1170 |
return instance; |
|
1171 |
} else { |
|
1172 |
throw new InvalidObjectException("unknown attribute name"); |
|
1173 |
} |
|
1174 |
} |
|
1175 |
||
1176 |
/** |
|
1177 |
* Constant identifying the integer field. |
|
1178 |
*/ |
|
1179 |
public static final Field INTEGER = new Field("integer"); |
|
1180 |
||
1181 |
/** |
|
1182 |
* Constant identifying the fraction field. |
|
1183 |
*/ |
|
1184 |
public static final Field FRACTION = new Field("fraction"); |
|
1185 |
||
1186 |
/** |
|
1187 |
* Constant identifying the exponent field. |
|
1188 |
*/ |
|
1189 |
public static final Field EXPONENT = new Field("exponent"); |
|
1190 |
||
1191 |
/** |
|
1192 |
* Constant identifying the decimal separator field. |
|
1193 |
*/ |
|
1194 |
public static final Field DECIMAL_SEPARATOR = |
|
1195 |
new Field("decimal separator"); |
|
1196 |
||
1197 |
/** |
|
1198 |
* Constant identifying the sign field. |
|
1199 |
*/ |
|
1200 |
public static final Field SIGN = new Field("sign"); |
|
1201 |
||
1202 |
/** |
|
1203 |
* Constant identifying the grouping separator field. |
|
1204 |
*/ |
|
1205 |
public static final Field GROUPING_SEPARATOR = |
|
1206 |
new Field("grouping separator"); |
|
1207 |
||
1208 |
/** |
|
1209 |
* Constant identifying the exponent symbol field. |
|
1210 |
*/ |
|
1211 |
public static final Field EXPONENT_SYMBOL = new |
|
1212 |
Field("exponent symbol"); |
|
1213 |
||
1214 |
/** |
|
1215 |
* Constant identifying the percent field. |
|
1216 |
*/ |
|
1217 |
public static final Field PERCENT = new Field("percent"); |
|
1218 |
||
1219 |
/** |
|
1220 |
* Constant identifying the permille field. |
|
1221 |
*/ |
|
1222 |
public static final Field PERMILLE = new Field("per mille"); |
|
1223 |
||
1224 |
/** |
|
1225 |
* Constant identifying the currency field. |
|
1226 |
*/ |
|
1227 |
public static final Field CURRENCY = new Field("currency"); |
|
1228 |
||
1229 |
/** |
|
1230 |
* Constant identifying the exponent sign field. |
|
1231 |
*/ |
|
1232 |
public static final Field EXPONENT_SIGN = new Field("exponent sign"); |
|
1233 |
} |
|
1234 |
} |