nc.ird.cantharella.utils

Class NumberTools

java.lang.Object

nc.ird.cantharella.utils.NumberTools

public final class NumberTools
extends Object

Tools for numbers

Author:

Mickael Tricot, Adrien Cheype

Method Summary

Methods

Modifier and Type	Method and Description
static String	bigDecimalToString(BigDecimal value, Locale locale, int minFractionDigit, int maxFractionDigit, int maxIntegerDigit) Give the string representation of a big decimal
static String	doubleToString(Double value, Locale locale, int minFractionDigit, int maxFractionDigit) Give the string representation of a double
static <N extends Number> N	nullIfZero(N n) Returns null if the value if zero
static BigDecimal	parseBigDecimal(String value, Locale locale, int maxFractionDigit, int maxIntegerDigit) Parse a big decimal from a String.
static Double	parseDouble(String value, Locale locale, int maxFractionDigit) Parse a double from a String.

Methods inherited from class java.lang.Object

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

Method Detail

nullIfZero

public static <N extends Number> N nullIfZero(N n)

Returns null if the value if zero

Type Parameters:

N - Number type

Parameters:

n - Number value

Returns:

The value or null if zero

parseDouble

public static Double parseDouble(String value,
                 Locale locale,
                 int maxFractionDigit)

Parse a double from a String. If the number is not recognize with locale separator, try with '.' decimal separator.

Parameters:

value - String value to parse

locale - The locale which define the decimal separator

maxFractionDigit - The maximum number of digits allowed in the fraction portion

Returns:

The double rounded according to maxFractionDigit (HALF_UP rounding mode)

parseBigDecimal

public static BigDecimal parseBigDecimal(String value,
                         Locale locale,
                         int maxFractionDigit,
                         int maxIntegerDigit)

Parse a big decimal from a String. If the number is not recognize with locale separator, try with '.' decimal separator

Parameters:

value - String value to parse

locale - The locale which define the decimal separator

maxFractionDigit - The maximum number of digits allowed in the fraction portion

maxIntegerDigit - The maximum number of digits allowed in the integer portion

Returns:

The big decimal with a specified precision

doubleToString

public static String doubleToString(Double value,
                    Locale locale,
                    int minFractionDigit,
                    int maxFractionDigit)

Give the string representation of a double

Parameters:

value - The double

locale - The locale which define the decimal separator

minFractionDigit - the minimum number of digits allowed in the fraction portion

maxFractionDigit - The maximum number of digits allowed in the fraction portion

Returns:

The double rounded according to maxFractionDigit (HALF_UP rounding mode)

bigDecimalToString

public static String bigDecimalToString(BigDecimal value,
                        Locale locale,
                        int minFractionDigit,
                        int maxFractionDigit,
                        int maxIntegerDigit)

Give the string representation of a big decimal

Parameters:

value - The big decimal

locale - The locale which define the decimal separator

minFractionDigit - the minimum number of digits allowed in the fraction portion

maxFractionDigit - The maximum number of digits allowed in the fraction portion

maxIntegerDigit - The maximum number of digits allowed in the integer portion

Returns:

The big decimal with a specified precision