com.jidesoft.converter
Class NumberConverter

java.lang.Object
  com.jidesoft.converter.NumberConverter

All Implemented Interfaces:

ObjectConverter

Direct Known Subclasses:

ByteConverter, DoubleConverter, FloatConverter, IntegerConverter, LongConverter, NaturalNumberConverter, NumberFormatConverter, ShortConverter

public abstract class NumberConverter
extends Object
implements ObjectConverter

Converter which converts Number to String and converts it back. You can pass in a NumberFormat as UserObject of ConverterContext if you want to control the format of the number such as maximum decimal point etc.

Field Summary

static ConverterContext

CONTEXT_FRACTION_NUMBER

Constructor Summary

NumberConverter()
Creates a number converter with no NumberFormat.

NumberConverter(NumberFormat format)
Creates the number converter with a specified NumberFormat.

Method Summary

protected NumberFormat	getDefaultNumberFormat() Gets the NumberFormat for Locale.US.
protected NumberFormat	getNumberFormat() Gets the NumberFormat.
boolean	isAvoidNegativeZero() Gets the flag indicating if negative zero should be avoided.
static boolean	isGroupingUsed() Gets flag if the grouping is used for the format.
protected Number	parseNumber(String string) Parse the string as number.
void	setAvoidNegativeZero(boolean avoidNegativeZero) Sets the flag indicating if negative zero should be avoided.
void	setCurrency(Currency currency) Set the currency of this converter.
void	setFractionDigits(int minDigits, int maxDigits) Set the fraction digits of this converter.
static void	setGroupingUsed(boolean groupingUsed) Sets if the grouping will be used for the NumberFormat.
void	setIntegerDigits(int minDigits, int maxDigits) Set the integer digits of this converter.
void	setNumberFormat(NumberFormat numberFormat)
void	setRoundingMode(RoundingMode mode) Set the rounding mode of this converter.
boolean	supportToString(Object object, ConverterContext context) If it supports toString method.
String	toString(Object object, ConverterContext context) Converts from object to String based on current locale.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.jidesoft.converter.ObjectConverter

fromString, supportFromString

Field Detail

CONTEXT_FRACTION_NUMBER

public static final ConverterContext CONTEXT_FRACTION_NUMBER

Constructor Detail

NumberConverter

public NumberConverter()

Creates a number converter with no NumberFormat.

NumberConverter

public NumberConverter(NumberFormat format)

Creates the number converter with a specified NumberFormat.

Parameters:

format - the number format.

Method Detail

toString

public String toString(Object object,
                       ConverterContext context)

Description copied from interface: ObjectConverter

Converts from object to String based on current locale.

Specified by:

toString in interface ObjectConverter

Parameters:

object - object to be converted

context - converter context to be used

Returns:

the String

supportToString

public boolean supportToString(Object object,
                               ConverterContext context)

Description copied from interface: ObjectConverter

If it supports toString method.

Specified by:

supportToString in interface ObjectConverter

Parameters:

object - object to be converted

context - converter context to be used

Returns:

true if supports toString

setNumberFormat

public void setNumberFormat(NumberFormat numberFormat)

getNumberFormat

protected NumberFormat getNumberFormat()

Gets the NumberFormat. Of setNumberFormat is never called, it will return DecimalFormat.getInstance().

Returns:

the NumberFormat.

getDefaultNumberFormat

protected NumberFormat getDefaultNumberFormat()

Gets the NumberFormat for Locale.US.

Returns:

the NumberFormat for Locale.US.

parseNumber

protected Number parseNumber(String string)

Parse the string as number. It will try using getNumberFormat first then try getDefaultNumberFormat which is the US locale number format.

Parameters:

string - the string

Returns:

the Number. Null if the string is not a number.

isGroupingUsed

public static boolean isGroupingUsed()

Gets flag if the grouping is used for the format.

Returns:

if the grouping is used.

setGroupingUsed

public static void setGroupingUsed(boolean groupingUsed)

Sets if the grouping will be used for the NumberFormat. We will call NumberFormat#setGroupingUsed when we create the NumberFormat. Default is true. If you want to call this method, please make sure calling it before ObjectConverterManager is used.

Parameters:

groupingUsed - true or false.

setFractionDigits

public void setFractionDigits(int minDigits,
                              int maxDigits)

Set the fraction digits of this converter.

Parameters:

minDigits - minimum fraction digits

maxDigits - maximum fraction digits

setCurrency

public void setCurrency(Currency currency)

Set the currency of this converter.

Parameters:

currency - currency

setIntegerDigits

public void setIntegerDigits(int minDigits,
                             int maxDigits)

Set the integer digits of this converter.

Parameters:

minDigits - minimum integer digits

maxDigits - maximum integer digits

setRoundingMode

public void setRoundingMode(RoundingMode mode)

Set the rounding mode of this converter.

Parameters:

mode - rounding mode

isAvoidNegativeZero

public boolean isAvoidNegativeZero()

Gets the flag indicating if negative zero should be avoided.

Returns:

true if negative zero should be avoided. Otherwise false.

Since:

3.5.1

See Also:

setAvoidNegativeZero(boolean)

setAvoidNegativeZero

public void setAvoidNegativeZero(boolean avoidNegativeZero)

Sets the flag indicating if negative zero should be avoided.

By default, the value is false to keep backward compatibility. If you don't like the string like "-0.00", please set this flag to true to remove the negative sign.

Parameters:

avoidNegativeZero - the flag

Since:

3.5.1