com.smartgwt.client.util

Class NumberUtil

java.lang.Object

com.smartgwt.client.util.NumberUtil

public class NumberUtil
extends java.lang.Object

Static singleton class containing APIs for interacting with Numbers.

Constructor Summary

Constructors

Constructor and Description
NumberUtil()

Method Summary

Modifier and Type	Method and Description
static int	clamp(int number, int min, int max) Returns a clamped number between a min and max.
static java.lang.String	format(double number, java.lang.String format) Return the parameter number formatted according to the parameter FormatString.
static java.lang.String	format(java.lang.Double number, java.lang.String format) Return the parameter number formatted according to the parameter FormatString.
static java.lang.String	format(float number, java.lang.String format) Return the parameter number formatted according to the parameter FormatString.
static java.lang.String	format(java.lang.Float number, java.lang.String format) Return the parameter number formatted according to the parameter FormatString.
static java.lang.String	format(java.lang.Integer number, java.lang.String format) Return the parameter number formatted according to the parameter FormatString.
static java.lang.String	format(int number, java.lang.String format) Return the parameter number formatted according to the parameter FormatString.
static java.lang.String	getCurrencySymbol() The currency symbol to use when formatting numbers
static java.lang.String	getDecimalSymbol() The decimal symbol to use when formatting numbers
static int	getGroupingFormat() The grouping-format for numbers
static java.lang.String	getGroupingSymbol() The grouping symbol, or thousands separator, to use when formatting numbers
static int	getNegativeFormat() The format to use when formatting negative numbers.
static java.lang.String	getNegativeSymbol() The negative symbol to use when formatting numbers
static java.lang.Boolean	isBetween(int number) Returns true if the number parameter falls between the 'first' and 'second' parameters.
static java.lang.Boolean	isBetween(int number, int first)
static java.lang.Boolean	isBetween(int number, int first, int second)
static java.lang.Boolean	isBetween(int number, int first, int second, int inclusive) Returns true if the number parameter falls between the 'first' and 'second' parameters.
static void	setCurrencySymbol(java.lang.String currencySymbol) The currency symbol to use when formatting numbers
static void	setDecimalSymbol(java.lang.String decimalSymbol) The decimal symbol to use when formatting numbers
static void	setGroupingFormat(int groupingFormat) The grouping-format for numbers
static void	setGroupingSymbol(java.lang.String groupingSymbol) The grouping symbol, or thousands separator, to use when formatting numbers
static void	setNegativeFormat(int negativeFormat) The format to use when formatting negative numbers.
static void	setNegativeSymbol(java.lang.String negativeSymbol) The negative symbol to use when formatting numbers

Methods inherited from class java.lang.Object

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

Constructor Detail

NumberUtil

public NumberUtil()

Method Detail

setCurrencySymbol

public static void setCurrencySymbol(java.lang.String currencySymbol)

The currency symbol to use when formatting numbers

Note: the correct symbol is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Parameters:

currencySymbol - new currencySymbol. Default value is "$".

getCurrencySymbol

public static java.lang.String getCurrencySymbol()

The currency symbol to use when formatting numbers

Note: the correct symbol is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Returns:

current value of currencySymbol

setDecimalSymbol

public static void setDecimalSymbol(java.lang.String decimalSymbol)

The decimal symbol to use when formatting numbers

Note: the correct symbol is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Parameters:

decimalSymbol - new decimalSymbol. Default value is ".".

getDecimalSymbol

public static java.lang.String getDecimalSymbol()

The decimal symbol to use when formatting numbers

Note: the correct symbol is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Returns:

current value of decimalSymbol

setGroupingFormat

public static void setGroupingFormat(int groupingFormat)

The grouping-format for numbers

Note: the correct format is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Parameters:

groupingFormat - new groupingFormat. Default value is 1.

getGroupingFormat

public static int getGroupingFormat()

The grouping-format for numbers

Note: the correct format is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Returns:

current value of groupingFormat

setGroupingSymbol

public static void setGroupingSymbol(java.lang.String groupingSymbol)

The grouping symbol, or thousands separator, to use when formatting numbers

Note: the correct symbol is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Parameters:

groupingSymbol - new groupingSymbol. Default value is ",".

getGroupingSymbol

public static java.lang.String getGroupingSymbol()

The grouping symbol, or thousands separator, to use when formatting numbers

Note: the correct symbol is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Returns:

current value of groupingSymbol

setNegativeFormat

public static void setNegativeFormat(int negativeFormat)

The format to use when formatting negative numbers. Supported values are: 1 = before, 2 = after, 3 = beforeSpace, 4 = afterSpace, 5 = parens

Note: the correct format is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Parameters:

negativeFormat - new negativeFormat. Default value is 1.

getNegativeFormat

public static int getNegativeFormat()

The format to use when formatting negative numbers. Supported values are: 1 = before, 2 = after, 3 = beforeSpace, 4 = afterSpace, 5 = parens

Note: the correct format is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Returns:

current value of negativeFormat

setNegativeSymbol

public static void setNegativeSymbol(java.lang.String negativeSymbol)

The negative symbol to use when formatting numbers

Note: the correct symbol is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Parameters:

negativeSymbol - new negativeSymbol. Default value is "-".

getNegativeSymbol

public static java.lang.String getNegativeSymbol()

The negative symbol to use when formatting numbers

Note: the correct symbol is normally auto-derived from GWT's locale system, so the only valid reason to set it is desiring to use a language from one locale in combination with formatting rules from another locale, in a single application and for a single end user.

Returns:

current value of negativeSymbol

clamp

public static int clamp(int number,
                        int min,
                        int max)

Returns a clamped number between a min and max.

  int clamped = NumberUtil.clamp(10, 0, 5); // Returns 5 because 10 is greater than 5
  int clamped = NumberUtil.clamp(-3, 0, 5); // Returns 0 because -3 is less than 0
  int clamped = NumberUtil.clamp(4, 0, 5); // Returns 4 because 4 is between 0 and 5
  

Parameters:

number - the number to clamp

min - the number to return if the number is lower than min

max - the number to return if the number is higher than max

Returns:

the clamped number

isBetween

public static java.lang.Boolean isBetween(int number)

Returns true if the number parameter falls between the 'first' and 'second' parameters.

Parameters:

number - Number object to be evaluated

Returns:

True if the given number falls inside the given range, false otherwise @example n = 3; bool = n.isBetween(3, 3, 6, true); // true

isBetween

public static java.lang.Boolean isBetween(int number,
                                          int first)

See Also:

isBetween(int)

isBetween

public static java.lang.Boolean isBetween(int number,
                                          int first,
                                          int second)

See Also:

isBetween(int)

isBetween

public static java.lang.Boolean isBetween(int number,
                                          int first,
                                          int second,
                                          int inclusive)

Returns true if the number parameter falls between the 'first' and 'second' parameters.

Parameters:

number - Number object to be evaluated

first - Number at the lower boundary

second - Number at the upper boundary

inclusive - Whether or not the numbers at either end of the boundary should be included in the comparison

Returns:

True if the given number falls inside the given range, false otherwise @example n = 3; bool = n.isBetween(3, 3, 6, true); // true

format

public static java.lang.String format(int number,
                                      java.lang.String format)

Return the parameter number formatted according to the parameter FormatString. This method is used to implement the format functionality, but it can also be used to format arbitrary numbers programmatically.

Parameters:

number - The number to format

format - The format to apply. See FormatString

Returns:

formatted number string

format

public static java.lang.String format(float number,
                                      java.lang.String format)

Return the parameter number formatted according to the parameter FormatString. This method is used to implement the format functionality, but it can also be used to format arbitrary numbers programmatically.

Parameters:

number - The number to format

format - The format to apply. See FormatString

Returns:

formatted number string

format

public static java.lang.String format(double number,
                                      java.lang.String format)

Return the parameter number formatted according to the parameter FormatString. This method is used to implement the format functionality, but it can also be used to format arbitrary numbers programmatically.

Parameters:

number - The number to format

format - The format to apply. See FormatString

Returns:

formatted number string

format

public static java.lang.String format(java.lang.Integer number,
                                      java.lang.String format)

Return the parameter number formatted according to the parameter FormatString. This method is used to implement the format functionality, but it can also be used to format arbitrary numbers programmatically.

Parameters:

number - The number to format

format - The format to apply. See FormatString

Returns:

formatted number string

format

public static java.lang.String format(java.lang.Float number,
                                      java.lang.String format)

Return the parameter number formatted according to the parameter FormatString. This method is used to implement the format functionality, but it can also be used to format arbitrary numbers programmatically.

Parameters:

number - The number to format

format - The format to apply. See FormatString

Returns:

formatted number string

format

public static java.lang.String format(java.lang.Double number,
                                      java.lang.String format)

Return the parameter number formatted according to the parameter FormatString. This method is used to implement the format functionality, but it can also be used to format arbitrary numbers programmatically.

Parameters:

number - The number to format

format - The format to apply. See FormatString

Returns:

formatted number string