Module java.base
Package java.text

# Class DecimalFormatSymbols

java.lang.Object
java.text.DecimalFormatSymbols

All Implemented Interfaces:
  `Serializable`, `Cloneable`

public class DecimalFormatSymbols extends Object implements Cloneable, Serializable
This class represents the set of symbols (such as the decimal separator, the grouping separator, and so on) needed by `DecimalFormat` to format numbers. `DecimalFormat` creates for itself an instance of `DecimalFormatSymbols` from its locale data. If you need to change any of these symbols, you can get the `DecimalFormatSymbols` object from your `DecimalFormat` and modify it.

If the locale contains "rg" (region override) Unicode extension, the symbols are overridden for the designated region.

Since:
  1.1
See Also:
  - `Locale`
  - `DecimalFormat`
  - Serialized Form

## Constructor Summary

Constructors
Constructor
Description
`DecimalFormatSymbols()`
Create a DecimalFormatSymbols object for the default `FORMAT` locale.
`DecimalFormatSymbols(Locale locale)`
Create a DecimalFormatSymbols object for the given locale.

## Method Summary

Modifier and Type
Method
Description
`Object`
`clone()`
Standard override.
`boolean`
`equals(Object obj)`
Override equals.
`static Locale[]`
`getAvailableLocales()`
Returns an array of all locales for which the `getInstance` methods of this class can return localized instances.
`Currency`
`getCurrency()`
Gets the currency of these DecimalFormatSymbols.
`String`
`getCurrencySymbol()`
Returns the currency symbol for the currency of these DecimalFormatSymbols in their locale.
`char`
`getDecimalSeparator()`
Gets the character used for decimal sign.
`char`
`getDigit()`
Gets the character used for a digit in a pattern.
`String`
`getExponentSeparator()`
Returns the string used to separate the mantissa from the exponent.
`char`
`getGroupingSeparator()`
Gets the character used for grouping separator.
`String`
`getInfinity()`
Gets the string used to represent infinity.
`static final DecimalFormatSymbols`
`getInstance()`
Gets the `DecimalFormatSymbols` instance for the default locale.
`static final DecimalFormatSymbols`
`getInstance(Locale locale)`
Gets the `DecimalFormatSymbols` instance for the specified locale.
`String`
`getInternationalCurrencySymbol()`
Returns the ISO 4217 currency code of the currency of these DecimalFormatSymbols.
`Locale`
`getLocale()`
Returns locale used to create this instance.
`char`
`getMinusSign()`
Gets the character used to represent minus sign.
`char`
`getMonetaryDecimalSeparator()`
Returns the monetary decimal separator.
`char`
`getMonetaryGroupingSeparator()`
Gets the character used for grouping separator for currencies.
`String`
`getNaN()`
Gets the string used to represent "not a number".
`char`
`getPatternSeparator()`
Gets the character used to separate positive and negative subpatterns in a pattern.
`char`
`getPercent()`
Gets the character used for percent sign.
`char`
`getPerMill()`
Gets the character used for per mille sign.
`char`
`getZeroDigit()`
Gets the character used for zero.
`int`
`hashCode()`
Override hashCode.
`void`
`setCurrency(Currency currency)`
Sets the currency of these DecimalFormatSymbols.
`void`
`setCurrencySymbol(String currency)`
Sets the currency symbol for the currency of these DecimalFormatSymbols in their locale.
`void`
`setDecimalSeparator(char decimalSeparator)`
Sets the character used for decimal sign.
`void`
`setDigit(char digit)`
Sets the character used for a digit in a pattern.
`void`
`setExponentSeparator(String exp)`
Sets the string used to separate the mantissa from the exponent.
`void`
`setGroupingSeparator(char groupingSeparator)`
Sets the character used for grouping separator.
`void`
`setInfinity(String infinity)`
Sets the string used to represent infinity.
`void`
`setInternationalCurrencySymbol(String currencyCode)`
Sets the ISO 4217 currency code of the currency of these DecimalFormatSymbols.
`void`
`setMinusSign(char minusSign)`
Sets the character used to represent minus sign.
`void`
`setMonetaryDecimalSeparator(char sep)`
Sets the monetary decimal separator.
`void`
`setMonetaryGroupingSeparator(char monetaryGroupingSeparator)`
Sets the character used for grouping separator for currencies.
`void`
`setNaN(String NaN)`
Sets the string used to represent "not a number".
`void`
`setPatternSeparator(char patternSeparator)`
Sets the character used to separate positive and negative subpatterns in a pattern.
`void`
`setPercent(char percent)`
Sets the character used for percent sign.
`void`
`setPerMill(char perMill)`
Sets the character used for per mille sign.
`void`
`setZeroDigit(char zeroDigit)`
Sets the character used for zero.

### Methods declared in class java.lang.Object

`finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

## Constructor Details

### DecimalFormatSymbols

public DecimalFormatSymbols()
Create a DecimalFormatSymbols object for the default `FORMAT` locale. This constructor can only construct instances for the locales supported by the Java runtime environment, not for those supported by installed `DecimalFormatSymbolsProvider` implementations. For full locale coverage, use the `getInstance` method.

This is equivalent to calling `DecimalFormatSymbols(Locale.getDefault(Locale.Category.FORMAT))`.

See Also:
  - `Locale.getDefault(java.util.Locale.Category)`
  - `Locale.Category.FORMAT`

### DecimalFormatSymbols

public DecimalFormatSymbols(Locale locale)
Create a DecimalFormatSymbols object for the given locale. This constructor can only construct instances for the locales supported by the Java runtime environment, not for those supported by installed `DecimalFormatSymbolsProvider` implementations. For full locale coverage, use the `getInstance` method. If the specified locale contains the `Locale.UNICODE_LOCALE_EXTENSION` for the numbering system, the instance is initialized with the specified numbering system if the JRE implementation supports it. For example,

     NumberFormat.getNumberInstance(Locale.forLanguageTag("th-TH-u-nu-thai"))

This may return a `NumberFormat` instance with the Thai numbering system, instead of the Latin numbering system.

Parameters:
  `locale` - the desired locale
Throws:
  `NullPointerException` - if `locale` is null

## Method Details

### getAvailableLocales

public static Locale[] getAvailableLocales()
Returns an array of all locales for which the `getInstance` methods of this class can return localized instances. The returned array represents the union of locales supported by the Java runtime and by installed `DecimalFormatSymbolsProvider` implementations. At a minimum, the returned array must contain a `Locale` instance equal to `Locale.ROOT` and a `Locale` instance equal to `Locale.US`.

Returns:
  an array of locales for which localized `DecimalFormatSymbols` instances are available.
Since:
  1.6

### getInstance

public static final DecimalFormatSymbols getInstance()
Gets the `DecimalFormatSymbols` instance for the default locale. This method provides access to `DecimalFormatSymbols` instances for locales supported by the Java runtime itself as well as for those supported by installed `DecimalFormatSymbolsProvider` implementations.

This is equivalent to calling `getInstance(Locale.getDefault(Locale.Category.FORMAT))`.

Returns:
  a `DecimalFormatSymbols` instance.
Since:
  1.6
See Also:
  - `Locale.getDefault(java.util.Locale.Category)`
  - `Locale.Category.FORMAT`

### getInstance

public static final DecimalFormatSymbols getInstance(Locale locale)
Gets the `DecimalFormatSymbols` instance for the specified locale. This method provides access to `DecimalFormatSymbols` instances for locales supported by the Java runtime itself as well as for those supported by installed `DecimalFormatSymbolsProvider` implementations. If the specified locale contains the `Locale.UNICODE_LOCALE_EXTENSION` for the numbering system, the instance is initialized with the specified numbering system if the JRE implementation supports it. For example,

     NumberFormat.getNumberInstance(Locale.forLanguageTag("th-TH-u-nu-thai"))

This may return a `NumberFormat` instance with the Thai numbering system, instead of the Latin numbering system.

Parameters:
  `locale` - the desired locale.
Returns:
  a `DecimalFormatSymbols` instance.
Throws:
  `NullPointerException` - if `locale` is null
Since:
  1.6

### getLocale

public Locale getLocale()
Returns locale used to create this instance.

Returns:
  locale used to create this instance
Since:
  19

### getZeroDigit

public char getZeroDigit()
Gets the character used for zero. Different for Arabic, etc.

Returns:
  the character used for zero

### setZeroDigit

public void setZeroDigit(char zeroDigit)
Sets the character used for zero. Different for Arabic, etc.

Parameters:
  `zeroDigit` - the character used for zero

### getGroupingSeparator

public char getGroupingSeparator()
Gets the character used for grouping separator. Different for French, etc.

Returns:
  the grouping separator

### setGroupingSeparator

public void setGroupingSeparator(char groupingSeparator)
Sets the character used for grouping separator. Different for French, etc.

Parameters:
  `groupingSeparator` - the grouping separator

### getDecimalSeparator

public char getDecimalSeparator()
Gets the character used for decimal sign. Different for French, etc.

Returns:
  the character used for decimal sign

### setDecimalSeparator

public void setDecimalSeparator(char decimalSeparator)
Sets the character used for decimal sign. Different for French, etc.

Parameters:
  `decimalSeparator` - the character used for decimal sign

### getPerMill

public char getPerMill()
Gets the character used for per mille sign. Different for Arabic, etc.

Returns:
  the character used for per mille sign

### setPerMill

public void setPerMill(char perMill)
Sets the character used for per mille sign. Different for Arabic, etc.

Parameters:
  `perMill` - the character used for per mille sign

### getPercent

public char getPercent()
Gets the character used for percent sign. Different for Arabic, etc.

Returns:
  the character used for percent sign

### setPercent

public void setPercent(char percent)
Sets the character used for percent sign. Different for Arabic, etc.

Parameters:
  `percent` - the character used for percent sign

### getDigit

public char getDigit()
Gets the character used for a digit in a pattern.

Returns:
  the character used for a digit in a pattern

### setDigit

public void setDigit(char digit)
Sets the character used for a digit in a pattern.

Parameters:
  `digit` - the character used for a digit in a pattern

### getPatternSeparator

public char getPatternSeparator()
Gets the character used to separate positive and negative subpatterns in a pattern.

Returns:
  the pattern separator

### setPatternSeparator

public void setPatternSeparator(char patternSeparator)
Sets the character used to separate positive and negative subpatterns in a pattern.

Parameters:
  `patternSeparator` - the pattern separator

### getInfinity

public String getInfinity()
Gets the string used to represent infinity. Almost always left unchanged.

Returns:
  the string representing infinity

### setInfinity

public void setInfinity(String infinity)
Sets the string used to represent infinity. Almost always left unchanged.

Parameters:
  `infinity` - the string representing infinity

### getNaN

public String getNaN()
Gets the string used to represent "not a number". Almost always left unchanged.

Returns:
  the string representing "not a number"

### setNaN

public void setNaN(String NaN)
Sets the string used to represent "not a number". Almost always left unchanged.

Parameters:
  `NaN` - the string representing "not a number"

### getMinusSign

public char getMinusSign()
Gets the character used to represent minus sign. If no explicit negative format is specified, one is formed by prefixing minusSign to the positive format.

Returns:
  the character representing minus sign

### setMinusSign

public void setMinusSign(char minusSign)
Sets the character used to represent minus sign. If no explicit negative format is specified, one is formed by prefixing minusSign to the positive format.

Parameters:
  `minusSign` - the character representing minus sign

### getCurrencySymbol

public String getCurrencySymbol()
Returns the currency symbol for the currency of these DecimalFormatSymbols in their locale.

Returns:
  the currency symbol
Since:
  1.2

### setCurrencySymbol

public void setCurrencySymbol(String currency)
Sets the currency symbol for the currency of these DecimalFormatSymbols in their locale.

Parameters:
  `currency` - the currency symbol
Since:
  1.2

### getInternationalCurrencySymbol

public String getInternationalCurrencySymbol()
Returns the ISO 4217 currency code of the currency of these DecimalFormatSymbols.

Returns:
  the currency code
Since:
  1.2

### setInternationalCurrencySymbol

public void setInternationalCurrencySymbol(String currencyCode)
Sets the ISO 4217 currency code of the currency of these DecimalFormatSymbols. If the currency code is valid (as defined by `Currency.getInstance`), this also sets the currency attribute to the corresponding Currency instance and the currency symbol attribute to the currency's symbol in the DecimalFormatSymbols' locale. If the currency code is not valid, then the currency attribute is set to null and the currency symbol attribute is not modified.

Parameters:
  `currencyCode` - the currency code
Since:
  1.2
See Also:
  - `setCurrency(java.util.Currency)`
  - `setCurrencySymbol(java.lang.String)`

### getCurrency

public Currency getCurrency()
Gets the currency of these DecimalFormatSymbols. May be null if the currency symbol attribute was previously set to a value that's not a valid ISO 4217 currency code.

Returns:
  the currency used, or null
Since:
  1.4

### setCurrency

public void setCurrency(Currency currency)
Sets the currency of these DecimalFormatSymbols. This also sets the currency symbol attribute to the currency's symbol in the DecimalFormatSymbols' locale, and the international currency symbol attribute to the currency's ISO 4217 currency code.

Parameters:
  `currency` - the new currency to be used
Throws:
  `NullPointerException` - if `currency` is null
Since:
  1.4
See Also:
  - `setCurrencySymbol(java.lang.String)`
  - `setInternationalCurrencySymbol(java.lang.String)`

### getMonetaryDecimalSeparator

public char getMonetaryDecimalSeparator()
Returns the monetary decimal separator.

Returns:
  the monetary decimal separator
Since:
  1.2

### setMonetaryDecimalSeparator

public void setMonetaryDecimalSeparator(char sep)
Sets the monetary decimal separator.

Parameters:
  `sep` - the monetary decimal separator
Since:
  1.2

### getExponentSeparator

public String getExponentSeparator()
Returns the string used to separate the mantissa from the exponent. Examples: "x10^" for 1.23x10^4, "E" for 1.23E4.

Returns:
  the exponent separator string
Since:
  1.6
See Also:
  - `setExponentSeparator(java.lang.String)`

### setExponentSeparator

public void setExponentSeparator(String exp)
Sets the string used to separate the mantissa from the exponent. Examples: "x10^" for 1.23x10^4, "E" for 1.23E4.

Parameters:
  `exp` - the exponent separator string
Throws:
  `NullPointerException` - if `exp` is null
Since:
  1.6
See Also:
  - `getExponentSeparator()`

### getMonetaryGroupingSeparator

public char getMonetaryGroupingSeparator()
Gets the character used for grouping separator for currencies. May be different from `grouping separator` in some locales, e.g, German in Austria.

Returns:
  the monetary grouping separator
Since:
  15

### setMonetaryGroupingSeparator

public void setMonetaryGroupingSeparator(char monetaryGroupingSeparator)
Sets the character used for grouping separator for currencies. Invocation of this method will not affect the normal `grouping separator`.

Parameters:
  `monetaryGroupingSeparator` - the monetary grouping separator
Since:
  15
See Also:
  - `setGroupingSeparator(char)`

### clone

public Object clone()
Standard override.

Overrides:
  `clone` in class `Object`
Returns:
  a clone of this instance.
See Also:
  - `Cloneable`

### equals

public boolean equals(Object obj)
Override equals.

Overrides:
  `equals` in class `Object`
Parameters:
  `obj` - the reference object with which to compare.
Returns:
  `true` if this object is the same as the obj argument; `false` otherwise.
See Also:
  - `Object.hashCode()`
  - `HashMap`

### hashCode

public int hashCode()
Override hashCode.

Overrides:
  `hashCode` in class `Object`
Returns:
  a hash code value for this object.
See Also:
  - `Object.equals(java.lang.Object)`
  - `System.identityHashCode(java.lang.Object)`