org.openestate.io.core

Class NumberUtils

java.lang.Object

org.openestate.io.core.NumberUtils

public final class NumberUtils
extends Object

NumberUtils.

Since:

1.1

Author:

Andreas Rudolph

Constructor Summary

Constructors

Constructor and Description
NumberUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	isNumeric(String value, Locale locale) Test, if a string contains a parsable number.
static Number	parseNumber(String value) Convert a string value into a number.
static Number	parseNumber(String value, boolean integerOnly, Locale... locales) Convert a string value into a number.
static Number	parseNumber(String value, Locale... locales) Convert a string value into a number.
static String	printNumber(Number value, int integerDigits, int fractionDigits) Write a number into a string value.
static String	printNumber(Number value, int integerDigits, int fractionDigits, Locale locale) Write a number into a string value.

Methods inherited from class java.lang.Object

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

Constructor Detail

NumberUtils

public NumberUtils()

Method Detail

isNumeric

public static boolean isNumeric(String value,
                Locale locale)

Test, if a string contains a parsable number.

Parameters:

value - the value to check

locale - the locale, against which the value is checked (checks locale specific decimal and grouping separators)

Returns:

true, if the provided value contains of numbers

parseNumber

public static Number parseNumber(String value)
                          throws NumberFormatException

Convert a string value into a number.

Parameters:

value - the string value to convert

Returns:

numeric value for the string

Throws:

NumberFormatException - if the string is not a valid number

parseNumber

public static Number parseNumber(String value,
                 Locale... locales)
                          throws NumberFormatException

Convert a string value into a number.

Parameters:

value - the string value to convert

locales - locales, against which the value is parsed

Returns:

numeric value for the string

Throws:

NumberFormatException - if the string is not a valid number

parseNumber

public static Number parseNumber(String value,
                 boolean integerOnly,
                 Locale... locales)
                          throws NumberFormatException

Convert a string value into a number.

Parameters:

value - the string value to convert

integerOnly - wether only the integer part of the value is parsed

locales - locales, against which the value is parsed

Returns:

numeric value for the string

Throws:

NumberFormatException - if the string is not a valid number

printNumber

public static String printNumber(Number value,
                 int integerDigits,
                 int fractionDigits)

Write a number into a string value.

Parameters:

value - the number to write

integerDigits - maximal number of integer digits

fractionDigits - maximal number of fraction digits

Returns:

the formatted number

printNumber

public static String printNumber(Number value,
                 int integerDigits,
                 int fractionDigits,
                 Locale locale)

Write a number into a string value.

Parameters:

value - the number to write

integerDigits - maximal number of integer digits

fractionDigits - maximal number of fraction digits

locale - locale for decimal separator (using Locale.ENGLISH if null)

Returns:

the formatted number