| /* |
| ******************************************************************************* |
| * Copyright (C) 1996-2006, International Business Machines Corporation and * |
| * others. All Rights Reserved. * |
| ******************************************************************************* |
| */ |
| |
| |
| package com.ibm.icu.text; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.math.BigInteger; |
| import java.text.DecimalFormatSymbols; |
| import java.text.FieldPosition; |
| import java.text.Format; |
| import java.text.ParseException; |
| import java.text.ParsePosition; |
| import java.util.Locale; |
| |
| import com.ibm.icu.util.ULocale; |
| |
| /** |
| * <code>NumberFormat</code> is the abstract base class for all number |
| * formats. This class provides the interface for formatting and parsing |
| * numbers. <code>NumberFormat</code> also provides methods for determining |
| * which locales have number formats, and what their names are. |
| * |
| * <p><strong>This is an enhanced version of <code>NumberFormat</code> that |
| * is based on the standard version in the JDK. New or changed functionality |
| * is labeled |
| * <strong><font face=helvetica color=red>NEW</font></strong> or |
| * <strong><font face=helvetica color=red>CHANGED</font></strong>.</strong> |
| * |
| * <p> |
| * <code>NumberFormat</code> helps you to format and parse numbers for any locale. |
| * Your code can be completely independent of the locale conventions for |
| * decimal points, thousands-separators, or even the particular decimal |
| * digits used, or whether the number format is even decimal. |
| * |
| * <p> |
| * To format a number for the current Locale, use one of the factory |
| * class methods: |
| * <blockquote> |
| * <pre> |
| * myString = NumberFormat.getInstance().format(myNumber); |
| * </pre> |
| * </blockquote> |
| * If you are formatting multiple numbers, it is |
| * more efficient to get the format and use it multiple times so that |
| * the system doesn't have to fetch the information about the local |
| * language and country conventions multiple times. |
| * <blockquote> |
| * <pre> |
| * NumberFormat nf = NumberFormat.getInstance(); |
| * for (int i = 0; i < a.length; ++i) { |
| * output.println(nf.format(myNumber[i]) + "; "); |
| * } |
| * </pre> |
| * </blockquote> |
| * To format a number for a different Locale, specify it in the |
| * call to <code>getInstance</code>. |
| * <blockquote> |
| * <pre> |
| * NumberFormat nf = NumberFormat.getInstance(Locale.FRENCH); |
| * </pre> |
| * </blockquote> |
| * You can also use a <code>NumberFormat</code> to parse numbers: |
| * <blockquote> |
| * <pre> |
| * myNumber = nf.parse(myString); |
| * </pre> |
| * </blockquote> |
| * Use <code>getInstance</code> or <code>getNumberInstance</code> to get the |
| * normal number format. Use <code>getIntegerInstance</code> to get an |
| * integer number format. Use <code>getCurrencyInstance</code> to get the |
| * currency number format. And use <code>getPercentInstance</code> to get a |
| * format for displaying percentages. With this format, a fraction like |
| * 0.53 is displayed as 53%. |
| * |
| * <p> |
| * You can also control the display of numbers with such methods as |
| * <code>setMinimumFractionDigits</code>. |
| * If you want even more control over the format or parsing, |
| * or want to give your users more control, |
| * you can try casting the <code>NumberFormat</code> you get from the factory methods |
| * to a <code>DecimalFormat</code>. This will work for the vast majority |
| * of locales; just remember to put it in a <code>try</code> block in case you |
| * encounter an unusual one. |
| * |
| * <p> |
| * NumberFormat is designed such that some controls |
| * work for formatting and others work for parsing. The following is |
| * the detailed description for each these control methods, |
| * <p> |
| * setParseIntegerOnly : only affects parsing, e.g. |
| * if true, "3456.78" -> 3456 (and leaves the parse position just after '6') |
| * if false, "3456.78" -> 3456.78 (and leaves the parse position just after '8') |
| * This is independent of formatting. If you want to not show a decimal point |
| * where there might be no digits after the decimal point, use |
| * setDecimalSeparatorAlwaysShown on DecimalFormat. |
| * <p> |
| * You can also use forms of the <code>parse</code> and <code>format</code> |
| * methods with <code>ParsePosition</code> and <code>FieldPosition</code> to |
| * allow you to: |
| * <ul> |
| * <li> progressively parse through pieces of a string |
| * <li> align the decimal point and other areas |
| * </ul> |
| * For example, you can align numbers in two ways: |
| * <ol> |
| * <li> If you are using a monospaced font with spacing for alignment, |
| * you can pass the <code>FieldPosition</code> in your format call, with |
| * <code>field</code> = <code>INTEGER_FIELD</code>. On output, |
| * <code>getEndIndex</code> will be set to the offset between the |
| * last character of the integer and the decimal. Add |
| * (desiredSpaceCount - getEndIndex) spaces at the front of the string. |
| * |
| * <li> If you are using proportional fonts, |
| * instead of padding with spaces, measure the width |
| * of the string in pixels from the start to <code>getEndIndex</code>. |
| * Then move the pen by |
| * (desiredPixelWidth - widthToAlignmentPoint) before drawing the text. |
| * It also works where there is no decimal, but possibly additional |
| * characters at the end, e.g., with parentheses in negative |
| * numbers: "(12)" for -12. |
| * </ol> |
| * |
| * <h4>Synchronization</h4> |
| * <p> |
| * Number formats are generally not synchronized. It is recommended to create |
| * separate format instances for each thread. If multiple threads access a format |
| * concurrently, it must be synchronized externally. |
| * <p> |
| * |
| * <h4>DecimalFormat</h4> |
| * <p>DecimalFormat is the concrete implementation of NumberFormat, and the |
| * NumberFormat API is essentially an abstraction from DecimalFormat's API. |
| * Refer to DecimalFormat for more information about this API.</p> |
| * |
| * see DecimalFormat |
| * see java.text.ChoiceFormat |
| * @author Mark Davis |
| * @author Helena Shih |
| * @author Alan Liu |
| * @stable ICU 2.0 |
| */ |
| public class NumberFormat extends Format { |
| private static final long serialVersionUID = 1; |
| |
| /** |
| * @internal |
| */ |
| public final java.text.NumberFormat numberFormat; |
| |
| /** |
| * @internal |
| * @param delegate the NumberFormat to which to delegate |
| */ |
| public NumberFormat(java.text.NumberFormat delegate) { |
| this.numberFormat = delegate; |
| } |
| |
| /** |
| * Default constructor to mirror Java's default public |
| * constructor. Java's is not callable as a public API, since |
| * their NumberFormat is abstract, so this is only useful to |
| * subclasses. In general, subclasses will not work unless |
| * they manipulate the delegate. |
| */ |
| public NumberFormat() { |
| this.numberFormat = java.text.NumberFormat.getInstance(); |
| } |
| |
| /** |
| * Field constant used to construct a FieldPosition object. Signifies that |
| * the position of the integer part of a formatted number should be returned. |
| * @see java.text.FieldPosition |
| * @stable ICU 2.0 |
| */ |
| public static final int INTEGER_FIELD = 0; |
| |
| /** |
| * Field constant used to construct a FieldPosition object. Signifies that |
| * the position of the fraction part of a formatted number should be returned. |
| * @see java.text.FieldPosition |
| * @stable ICU 2.0 |
| */ |
| public static final int FRACTION_FIELD = 1; |
| |
| /** |
| * <strong><font face=helvetica color=red>CHANGED</font></strong> |
| * Format an object. Change: recognizes <code>BigInteger</code> |
| * and <code>BigDecimal</code> objects. |
| * @stable ICU 2.0 |
| */ |
| public StringBuffer format(Object number, StringBuffer toAppendTo, FieldPosition pos) { |
| return numberFormat.format(number, toAppendTo, pos); |
| } |
| |
| /** |
| * @stable ICU 2.0 |
| */ |
| public final Object parseObject(String source, ParsePosition parsePosition) { |
| return numberFormat.parse(source, parsePosition); |
| } |
| |
| /** |
| * Specialization of format. |
| * @see java.text.Format#format(Object) |
| * @stable ICU 2.0 |
| */ |
| public final String format(double number) { |
| return numberFormat.format(number); |
| } |
| |
| /** |
| * Specialization of format. |
| * @see java.text.Format#format(Object) |
| * @stable ICU 2.0 |
| */ |
| public final String format(long number) { |
| return numberFormat.format(number); |
| } |
| |
| /** |
| * <strong><font face=helvetica color=red>NEW</font></strong> |
| * Convenience method to format a BigInteger. |
| * @stable ICU 2.0 |
| */ |
| public final String format(BigInteger number) { |
| return numberFormat.format(number); |
| } |
| |
| /** |
| * Specialization of format. |
| * @see java.text.Format#format(Object, StringBuffer, FieldPosition) |
| * @stable ICU 2.0 |
| */ |
| public StringBuffer format(double number, StringBuffer toAppendTo, FieldPosition pos) { |
| return numberFormat.format(number, toAppendTo, pos); |
| } |
| |
| /** |
| * Specialization of format. |
| * @see java.text.Format#format(Object, StringBuffer, FieldPosition) |
| * @stable ICU 2.0 |
| */ |
| public StringBuffer format(long number, StringBuffer toAppendTo, FieldPosition pos) { |
| return numberFormat.format(number, toAppendTo, pos); |
| } |
| |
| /** |
| * <strong><font face=helvetica color=red>NEW</font></strong> |
| * Format a BigInteger. |
| * @see java.text.Format#format(Object, StringBuffer, FieldPosition) |
| * @stable ICU 2.0 |
| */ |
| public StringBuffer format(BigInteger number, StringBuffer toAppendTo, FieldPosition pos) { |
| return numberFormat.format(number, toAppendTo, pos); |
| } |
| /** |
| * Returns a Long if possible (e.g., within the range [Long.MIN_VALUE, |
| * Long.MAX_VALUE] and with no decimals), otherwise a Double. |
| * If IntegerOnly is set, will stop at a decimal |
| * point (or equivalent; e.g., for rational numbers "1 2/3", will stop |
| * after the 1). |
| * Does not throw an exception; if no object can be parsed, index is |
| * unchanged! |
| * @see #isParseIntegerOnly |
| * @see java.text.Format#parseObject(String, ParsePosition) |
| * @stable ICU 2.0 |
| */ |
| public Number parse(String text, ParsePosition parsePosition) { |
| return numberFormat.parse(text, parsePosition); |
| } |
| |
| /** |
| * Parses text from the beginning of the given string to produce a number. |
| * The method might not use the entire text of the given string. |
| * |
| * @param text A String whose beginning should be parsed. |
| * @return A Number parsed from the string. |
| * @exception ParseException if the beginning of the specified string |
| * cannot be parsed. |
| * @see #format |
| * @stable ICU 2.0 |
| */ |
| public Number parse(String text) throws ParseException { |
| return numberFormat.parse(text); |
| } |
| /** |
| * Returns true if this format will parse numbers as integers only. |
| * For example in the English locale, with ParseIntegerOnly true, the |
| * string "1234." would be parsed as the integer value 1234 and parsing |
| * would stop at the "." character. The decimal separator accepted |
| * by the parse operation is locale-dependent and determined by the |
| * subclass. |
| * @return true if this will parse integers only |
| * @stable ICU 2.0 |
| */ |
| public boolean isParseIntegerOnly() { |
| return numberFormat.isParseIntegerOnly(); |
| } |
| |
| /** |
| * Sets whether or not numbers should be parsed as integers only. |
| * @param value true if this should parse integers only |
| * @see #isParseIntegerOnly |
| * @stable ICU 2.0 |
| */ |
| public void setParseIntegerOnly(boolean value) { |
| numberFormat.setParseIntegerOnly(value); |
| } |
| |
| //============== Locale Stuff ===================== |
| |
| /** |
| * Returns the default number format for the current default locale. |
| * The default format is one of the styles provided by the other |
| * factory methods: getNumberInstance, getIntegerInstance, |
| * getCurrencyInstance or getPercentInstance. |
| * Exactly which one is locale-dependent. |
| * @stable ICU 2.0 |
| */ |
| public final static NumberFormat getInstance() { |
| return getInstance(ULocale.getDefault(), NUMBERSTYLE); |
| } |
| |
| /** |
| * Returns the default number format for the specified locale. |
| * The default format is one of the styles provided by the other |
| * factory methods: getNumberInstance, getCurrencyInstance or getPercentInstance. |
| * Exactly which one is locale-dependent. |
| * @stable ICU 2.0 |
| */ |
| public static NumberFormat getInstance(Locale inLocale) { |
| return getInstance(ULocale.forLocale(inLocale), NUMBERSTYLE); |
| } |
| |
| /** |
| * Returns the default number format for the specified locale. |
| * The default format is one of the styles provided by the other |
| * factory methods: getNumberInstance, getCurrencyInstance or getPercentInstance. |
| * Exactly which one is locale-dependent. |
| * @draft ICU 3.2 |
| */ |
| public static NumberFormat getInstance(ULocale inLocale) { |
| return getInstance(inLocale, NUMBERSTYLE); |
| } |
| |
| /** |
| * Returns a general-purpose number format for the current default locale. |
| * @stable ICU 2.0 |
| */ |
| public final static NumberFormat getNumberInstance() { |
| return getInstance(ULocale.getDefault(), NUMBERSTYLE); |
| } |
| |
| /** |
| * Returns a general-purpose number format for the specified locale. |
| * @stable ICU 2.0 |
| */ |
| public static NumberFormat getNumberInstance(Locale inLocale) { |
| return getInstance(ULocale.forLocale(inLocale), NUMBERSTYLE); |
| } |
| |
| /** |
| * Returns a general-purpose number format for the specified locale. |
| * @draft ICU 3.2 |
| */ |
| public static NumberFormat getNumberInstance(ULocale inLocale) { |
| return getInstance(inLocale, NUMBERSTYLE); |
| } |
| |
| /** |
| * Returns an integer number format for the current default locale. The |
| * returned number format is configured to round floating point numbers |
| * to the nearest integer using IEEE half-even rounding (see {@link |
| * com.ibm.icu.math.BigDecimal#ROUND_HALF_EVEN ROUND_HALF_EVEN}) for formatting, |
| * and to parse only the integer part of an input string (see {@link |
| * #isParseIntegerOnly isParseIntegerOnly}). |
| * |
| * @return a number format for integer values |
| * @stable ICU 2.0 |
| */ |
| public final static NumberFormat getIntegerInstance() { |
| return getInstance(ULocale.getDefault(), INTEGERSTYLE); |
| } |
| |
| /** |
| * Returns an integer number format for the specified locale. The |
| * returned number format is configured to round floating point numbers |
| * to the nearest integer using IEEE half-even rounding (see {@link |
| * com.ibm.icu.math.BigDecimal#ROUND_HALF_EVEN ROUND_HALF_EVEN}) for formatting, |
| * and to parse only the integer part of an input string (see {@link |
| * #isParseIntegerOnly isParseIntegerOnly}). |
| * |
| * @param inLocale the locale for which a number format is needed |
| * @return a number format for integer values |
| * @stable ICU 2.0 |
| */ |
| public static NumberFormat getIntegerInstance(Locale inLocale) { |
| return getInstance(ULocale.forLocale(inLocale), INTEGERSTYLE); |
| } |
| |
| /** |
| * Returns an integer number format for the specified locale. The |
| * returned number format is configured to round floating point numbers |
| * to the nearest integer using IEEE half-even rounding (see {@link |
| * com.ibm.icu.math.BigDecimal#ROUND_HALF_EVEN ROUND_HALF_EVEN}) for formatting, |
| * and to parse only the integer part of an input string (see {@link |
| * #isParseIntegerOnly isParseIntegerOnly}). |
| * |
| * @param inLocale the locale for which a number format is needed |
| * @return a number format for integer values |
| * @draft ICU 3.2 |
| */ |
| public static NumberFormat getIntegerInstance(ULocale inLocale) { |
| return getInstance(inLocale, INTEGERSTYLE); |
| } |
| |
| /** |
| * Returns a currency format for the current default locale. |
| * @return a number format for currency |
| * @stable ICU 2.0 |
| */ |
| public final static NumberFormat getCurrencyInstance() { |
| return getInstance(ULocale.getDefault(), CURRENCYSTYLE); |
| } |
| |
| /** |
| * Returns a currency format for the specified locale. |
| * @return a number format for currency |
| * @stable ICU 2.0 |
| */ |
| public static NumberFormat getCurrencyInstance(Locale inLocale) { |
| return getInstance(ULocale.forLocale(inLocale), CURRENCYSTYLE); |
| } |
| |
| /** |
| * Returns a currency format for the specified locale. |
| * @return a number format for currency |
| * @draft ICU 3.2 |
| */ |
| public static NumberFormat getCurrencyInstance(ULocale inLocale) { |
| return getInstance(inLocale, CURRENCYSTYLE); |
| } |
| |
| /** |
| * Returns a percentage format for the current default locale. |
| * @return a number format for percents |
| * @stable ICU 2.0 |
| */ |
| public final static NumberFormat getPercentInstance() { |
| return getInstance(ULocale.getDefault(), PERCENTSTYLE); |
| } |
| |
| /** |
| * Returns a percentage format for the specified locale. |
| * @return a number format for percents |
| * @stable ICU 2.0 |
| */ |
| public static NumberFormat getPercentInstance(Locale inLocale) { |
| return getInstance(ULocale.forLocale(inLocale), PERCENTSTYLE); |
| } |
| |
| /** |
| * Returns a percentage format for the specified locale. |
| * @return a number format for percents |
| * @draft ICU 3.2 |
| */ |
| public static NumberFormat getPercentInstance(ULocale inLocale) { |
| return getInstance(inLocale, PERCENTSTYLE); |
| } |
| |
| /** |
| * <strong><font face=helvetica color=red>NEW</font></strong> |
| * Returns a scientific format for the current default locale. |
| * @return a scientific number format |
| * @stable ICU 2.0 |
| */ |
| public final static NumberFormat getScientificInstance() { |
| return getInstance(ULocale.getDefault(), SCIENTIFICSTYLE); |
| } |
| |
| /** |
| * <strong><font face=helvetica color=red>NEW</font></strong> |
| * Returns a scientific format for the specified locale. |
| * @return a scientific number format |
| * @stable ICU 2.0 |
| */ |
| public static NumberFormat getScientificInstance(Locale inLocale) { |
| return getInstance(ULocale.forLocale(inLocale), SCIENTIFICSTYLE); |
| } |
| |
| /** |
| * <strong><font face=helvetica color=red>NEW</font></strong> |
| * Returns a scientific format for the specified locale. |
| * @return a scientific number format |
| * @draft ICU 3.2 |
| */ |
| public static NumberFormat getScientificInstance(ULocale inLocale) { |
| return getInstance(inLocale, SCIENTIFICSTYLE); |
| } |
| |
| /** |
| * Get the list of Locales for which NumberFormats are available. |
| * @return the available locales |
| * @stable ICU 2.0 |
| */ |
| public static Locale[] getAvailableLocales() { |
| return java.text.NumberFormat.getAvailableLocales(); |
| } |
| |
| /** |
| * Get the list of Locales for which NumberFormats are available. |
| * @return the available locales |
| * @draft ICU 3.2 |
| */ |
| public static ULocale[] getAvailableULocales() { |
| if (availableULocales == null) { |
| Locale[] locales = java.text.NumberFormat.getAvailableLocales(); |
| ULocale[] ulocales = new ULocale[locales.length]; |
| for (int i = 0; i < locales.length; ++i) { |
| ulocales[i] = ULocale.forLocale(locales[i]); |
| } |
| availableULocales = ulocales; |
| } |
| return (ULocale[])availableULocales.clone(); |
| } |
| private static ULocale[] availableULocales; |
| |
| |
| /** |
| * Returns true if grouping is used in this format. For example, in the |
| * en_US locale, with grouping on, the number 1234567 will be formatted |
| * as "1,234,567". The grouping separator as well as the size of each group |
| * is locale-dependent and is determined by subclasses of NumberFormat. |
| * Grouping affects both parsing and formatting. |
| * @return true if grouping is used |
| * @see #setGroupingUsed |
| * @stable ICU 2.0 |
| */ |
| public boolean isGroupingUsed() { |
| return numberFormat.isGroupingUsed(); |
| } |
| |
| /** |
| * Sets whether or not grouping will be used in this format. Grouping |
| * affects both parsing and formatting. |
| * @see #isGroupingUsed |
| * @param newValue true to use grouping. |
| * @stable ICU 2.0 |
| */ |
| public void setGroupingUsed(boolean newValue) { |
| numberFormat.setGroupingUsed(newValue); |
| } |
| |
| /** |
| * Returns the maximum number of digits allowed in the integer portion of a |
| * number. The default value is 40, which subclasses can override. |
| * When formatting, the exact behavior when this value is exceeded is |
| * subclass-specific. When parsing, this has no effect. |
| * @return the maximum number of integer digits |
| * @see #setMaximumIntegerDigits |
| * @stable ICU 2.0 |
| */ |
| public int getMaximumIntegerDigits() { |
| return numberFormat.getMaximumIntegerDigits(); |
| } |
| |
| /** |
| * Sets the maximum number of digits allowed in the integer portion of a |
| * number. This must be >= minimumIntegerDigits. If the |
| * new value for maximumIntegerDigits is less than the current value |
| * of minimumIntegerDigits, then minimumIntegerDigits will also be set to |
| * the new value. |
| * @param newValue the maximum number of integer digits to be shown; if |
| * less than zero, then zero is used. Subclasses might enforce an |
| * upper limit to this value appropriate to the numeric type being formatted. |
| * @see #getMaximumIntegerDigits |
| * @stable ICU 2.0 |
| */ |
| public void setMaximumIntegerDigits(int newValue) { |
| numberFormat.setMaximumIntegerDigits(newValue); |
| } |
| |
| /** |
| * Returns the minimum number of digits allowed in the integer portion of a |
| * number. The default value is 1, which subclasses can override. |
| * When formatting, if this value is not reached, numbers are padded on the |
| * left with the locale-specific '0' character to ensure at least this |
| * number of integer digits. When parsing, this has no effect. |
| * @return the minimum number of integer digits |
| * @see #setMinimumIntegerDigits |
| * @stable ICU 2.0 |
| */ |
| public int getMinimumIntegerDigits() { |
| return numberFormat.getMinimumIntegerDigits(); |
| } |
| |
| /** |
| * Sets the minimum number of digits allowed in the integer portion of a |
| * number. This must be <= maximumIntegerDigits. If the |
| * new value for minimumIntegerDigits is more than the current value |
| * of maximumIntegerDigits, then maximumIntegerDigits will also be set to |
| * the new value. |
| * @param newValue the minimum number of integer digits to be shown; if |
| * less than zero, then zero is used. Subclasses might enforce an |
| * upper limit to this value appropriate to the numeric type being formatted. |
| * @see #getMinimumIntegerDigits |
| * @stable ICU 2.0 |
| */ |
| public void setMinimumIntegerDigits(int newValue) { |
| numberFormat.setMinimumIntegerDigits(newValue); |
| } |
| |
| /** |
| * Returns the maximum number of digits allowed in the fraction |
| * portion of a number. The default value is 3, which subclasses |
| * can override. When formatting, the exact behavior when this |
| * value is exceeded is subclass-specific. When parsing, this has |
| * no effect. |
| * @return the maximum number of fraction digits |
| * @see #setMaximumFractionDigits |
| * @stable ICU 2.0 |
| */ |
| public int getMaximumFractionDigits() { |
| return numberFormat.getMaximumFractionDigits(); |
| } |
| |
| /** |
| * Sets the maximum number of digits allowed in the fraction portion of a |
| * number. This must be >= minimumFractionDigits. If the |
| * new value for maximumFractionDigits is less than the current value |
| * of minimumFractionDigits, then minimumFractionDigits will also be set to |
| * the new value. |
| * @param newValue the maximum number of fraction digits to be shown; if |
| * less than zero, then zero is used. The concrete subclass may enforce an |
| * upper limit to this value appropriate to the numeric type being formatted. |
| * @see #getMaximumFractionDigits |
| * @stable ICU 2.0 |
| */ |
| public void setMaximumFractionDigits(int newValue) { |
| numberFormat.setMaximumFractionDigits(newValue); |
| } |
| |
| /** |
| * Returns the minimum number of digits allowed in the fraction portion of a |
| * number. The default value is 0, which subclasses can override. |
| * When formatting, if this value is not reached, numbers are padded on |
| * the right with the locale-specific '0' character to ensure at least |
| * this number of fraction digits. When parsing, this has no effect. |
| * @return the minimum number of fraction digits |
| * @see #setMinimumFractionDigits |
| * @stable ICU 2.0 |
| */ |
| public int getMinimumFractionDigits() { |
| return numberFormat.getMinimumFractionDigits(); |
| } |
| |
| /** |
| * Sets the minimum number of digits allowed in the fraction portion of a |
| * number. This must be <= maximumFractionDigits. If the |
| * new value for minimumFractionDigits exceeds the current value |
| * of maximumFractionDigits, then maximumFractionDigits will also be set to |
| * the new value. |
| * @param newValue the minimum number of fraction digits to be shown; if |
| * less than zero, then zero is used. Subclasses might enforce an |
| * upper limit to this value appropriate to the numeric type being formatted. |
| * @see #getMinimumFractionDigits |
| * @stable ICU 2.0 |
| */ |
| public void setMinimumFractionDigits(int newValue) { |
| numberFormat.setMinimumFractionDigits(newValue); |
| } |
| |
| /** |
| * Return a string suitable for debugging. |
| * @return a string suitable for debugging |
| * @draft ICU 3.4.2 |
| */ |
| public String toString() { |
| return numberFormat.toString(); |
| } |
| |
| /** |
| * Overrides Cloneable. |
| * @stable ICU 2.0 |
| */ |
| public Object clone() { |
| return new NumberFormat((java.text.NumberFormat)numberFormat.clone()); |
| } |
| |
| /** |
| * Overrides equals. Two NumberFormats are equal if they are of the same class |
| * and the settings (groupingUsed, parseIntegerOnly, maximumIntegerDigits, etc. |
| * are equal. |
| * @param obj the object to compare against |
| * @return true if the object is equal to this. |
| * @stable ICU 2.0 |
| */ |
| public boolean equals(Object obj) { |
| try { |
| return numberFormat.equals(((NumberFormat)obj).numberFormat); |
| } |
| catch (Exception e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Overrides hashCode |
| * @stable ICU 2.0 |
| */ |
| public int hashCode() { |
| return numberFormat.hashCode(); |
| } |
| |
| // =======================privates=============================== |
| |
| private static NumberFormat getInstance(ULocale desiredLocale, int choice) { |
| Locale locale = desiredLocale.toLocale(); |
| java.text.NumberFormat nf = null; |
| switch (choice) { |
| case NUMBERSTYLE: nf = java.text.NumberFormat.getInstance(locale); break; |
| case CURRENCYSTYLE: nf = java.text.NumberFormat.getCurrencyInstance(locale); break; |
| case PERCENTSTYLE: nf = java.text.NumberFormat.getPercentInstance(locale); break; |
| case SCIENTIFICSTYLE: nf = new java.text.DecimalFormat("#E0", new DecimalFormatSymbols(locale)); |
| nf.setMaximumFractionDigits(10); |
| break; |
| case INTEGERSTYLE: |
| if (unchecked) { |
| unchecked = false; |
| try { |
| Class[] args = { java.util.Locale.class }; |
| integer14API = java.text.NumberFormat.class.getMethod("getIntegerInstance", args); |
| } |
| catch (Exception e) { |
| } |
| } |
| if (integer14API != null) { |
| try { |
| Object[] args = { locale }; |
| nf = (java.text.NumberFormat)integer14API.invoke(null, args); |
| } |
| catch (IllegalAccessException e) { |
| integer14API = null; |
| } |
| catch (InvocationTargetException e) { |
| integer14API = null; |
| } |
| catch (Exception e) { |
| // shouldn't happen, but locale might be null, for example |
| // and we don't want to throw away our method because someone |
| // called us with a bad parameter |
| } |
| } |
| if (nf == null) { |
| nf = java.text.NumberFormat.getNumberInstance(locale); |
| nf.setMaximumFractionDigits(0); |
| nf.setParseIntegerOnly(true); |
| } |
| break; |
| } |
| return new NumberFormat(nf); |
| } |
| |
| private static boolean unchecked = true; |
| private static Method integer14API; |
| |
| private static final int NUMBERSTYLE = 0; |
| private static final int CURRENCYSTYLE = 1; |
| private static final int PERCENTSTYLE = 2; |
| private static final int SCIENTIFICSTYLE = 3; |
| private static final int INTEGERSTYLE = 4; |
| } |
