net.lessy.util
Class NumberUtil

java.lang.Object
  net.lessy.util.NumberUtil

public class NumberUtil
extends Object

Author:

Hans Lesmeister

Constructor Summary

NumberUtil()

Method Summary

static BigDecimal	checkNumber(Object value) Checks if the passed value is a number
static int	convertToInt(Integer value, int defaultValue) Converts a (big) Integer to a small int.
static Long	convertToLong(Number number) Converts a Number to (big) Long
static Number	convertToNumber(Amount amount) Converts an Amount to its associated Number (usually a BigDecimal)
static Number	convertToNumber(Amount amount, Number defaultValue) Converts an Amount to its associated Number (usually a BigDecimal)

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

convertToLong

public static Long convertToLong(Number number)

Converts a Number to (big) Long

Parameters:

number - Nmber to convert

Returns:

The Long-Value or null if number is null

convertToInt

public static int convertToInt(Integer value,
                               int defaultValue)

Converts a (big) Integer to a small int. If the value is null then the defaultvalue is returned

Parameters:

value - The Integer to convert

defaultValue - Return if value is null

Returns:

int-Value

convertToNumber

public static Number convertToNumber(Amount amount)

Converts an Amount to its associated Number (usually a BigDecimal)

Parameters:

amount - Amount to convert

Returns:

Number-Representation or null if the passed amount is null

convertToNumber

public static Number convertToNumber(Amount amount,
                                     Number defaultValue)

Converts an Amount to its associated Number (usually a BigDecimal)

Parameters:

amount - Amount to convert

defaultValue - Value to return if the passed amount is null

Returns:

Number-Representation or the defaultValue if the passed amount is null

checkNumber

public static BigDecimal checkNumber(Object value)

Checks if the passed value is a number

Parameters:

value - Value to be tested. Can be any type. Tested will be the toString()-result.

Returns:

BigInteger if the value is a number, otherwise null (An Exception is never thrown)