Package org.bardframework.commons.utils

Class NumberUtils

java.lang.Object

org.bardframework.commons.utils.NumberUtils

public final class NumberUtils
extends Object

Created by Vahid Zafari on 8/12/2016.

Method Summary

Modifier and Type	Method	Description
static double	getDouble(Object object)	remove all non-digit character form string, if remain string not empty, return double value of that, else return 0
static Long	getLastDigit(long number, int countOfLastDigit)
static Set<Long>	getNumbers(String string)
static Long	getNumeric(Object num)
static Long	getNumeric(String num)	remove all non-digit character (not minus in start if string '-') form string, if remain string not empty, return long value of that, else return 0
static Set<Long>	getNumeric(Collection<String> collection)
static int	toInt(String str, int defaultValue)	Convert a String to a int, returning a default value if the conversion fails.
static long	toLong(String str, long defaultValue)	Convert a String to a long, returning a default value if the conversion fails.

Methods inherited from class java.lang.Object

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

Method Detail

getLastDigit

public static Long getLastDigit(long number,
                                int countOfLastDigit)

Returns:

count of last digit from number

getNumeric

public static Long getNumeric(String num)

remove all non-digit character (not minus in start if string '-') form string, if remain string not empty, return long value of that, else return 0

getNumeric

public static Long getNumeric(Object num)

Returns:

remove all non-digit character form string, if remain string not empty, return long value of that, else return 0

getNumeric

public static Set<Long> getNumeric(Collection<String> collection)

Returns:

Numeric list of given string collection

getDouble

public static double getDouble(Object object)

remove all non-digit character form string, if remain string not empty, return double value of that, else return 0

getNumbers

public static Set<Long> getNumbers(String string)

Returns:

list of numbers in given string

toLong

public static long toLong(String str,
                          long defaultValue)

Convert a String to a long, returning a default value if the conversion fails.

If the string is null, the default value is returned.

   NumberUtils.toLong(null, 1L) = 1L
   NumberUtils.toLong("", 1L)   = 1L
   NumberUtils.toLong("1", 0L)  = 1L
 

Parameters:

str - the string to convert, may be null

defaultValue - the default value

Returns:

the long represented by the string, or the default if conversion fails

toInt

public static int toInt(String str,
                        int defaultValue)

Convert a String to a int, returning a default value if the conversion fails.

If the string is null, the default value is returned.

   NumberUtils.toInt(null, 1) = 1
   NumberUtils.toInt("", 1)   = 1
   NumberUtils.toInt("1", 0)  = 1
 

Parameters:

str - the string to convert, may be null

defaultValue - the default value

Returns:

the int represented by the string, or the default if conversion fails