net.obvj.jep.util

Class NumberUtils

java.lang.Object

net.obvj.jep.util.NumberUtils

public class NumberUtils
extends Object

A utility class for working with numbers.

Author:

oswaldo.bapvic.jr

Method Summary

Modifier and Type	Method and Description
static boolean	containsParsableNumbers(Iterable<?> iterable) Checks if all the elements are parsable number.
static Integer	getIntegerFromString(String stringValue) Gets an integer value from a String.
static boolean	isDecimal(Number numberValue) Checks if a Number contains a decimal.
static boolean	isDecimal(String stringValue) Checks if a String represents a number with decimal.
static boolean	isInteger(Number numberValue) Checks if a Number is an integer.
static boolean	isInteger(Object object) Checks if the specified Object represents an integer.
static boolean	isInteger(String stringValue) Checks if a String represents an integer.
static boolean	isNumber(Object object) Checks whether the Object is a valid Java number.
static double	parseDouble(Object object) Converts an Object to a double.
static int	parseInt(Object object) Converts an Object to a integer.

Methods inherited from class java.lang.Object

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

Method Detail

getIntegerFromString

public static Integer getIntegerFromString(String stringValue)

Gets an integer value from a String. If the string contains a representation of a double value, the decimal places are truncated.

Parameters:

stringValue - the string to get the integer value

Returns:

the integer value or null if the string is null or empty

isInteger

public static boolean isInteger(Object object)

Checks if the specified Object represents an integer.

Parameters:

object - the Object to be checked

Returns:

true if is integer otherwise false

isInteger

public static boolean isInteger(String stringValue)

Checks if a String represents an integer.

Parameters:

stringValue - the string to be checked

Returns:

true if is integer otherwise false

isDecimal

public static boolean isDecimal(String stringValue)

Checks if a String represents a number with decimal.

Parameters:

stringValue - the string to be checked

Returns:

true if is decimal otherwise false

isInteger

public static boolean isInteger(Number numberValue)

Checks if a Number is an integer.

Parameters:

numberValue - the number to be checked

Returns:

true if is integer otherwise false

isDecimal

public static boolean isDecimal(Number numberValue)

Checks if a Number contains a decimal.

Parameters:

numberValue - the number to be checked

Returns:

true if is decimal otherwise false

parseInt

public static int parseInt(Object object)

Converts an Object to a integer. If the object is a Number or String representation of Number containing decimal places, the decimal places will be truncated.

Parameters:

object - the object to be parsed

Returns:

an integer number or null if the string is null or empty

Throws:

NumberFormatException - if the object cannot be converted into integer

parseDouble

public static double parseDouble(Object object)

Converts an Object to a double.

Parameters:

object - the object to be parsed

Returns:

the integer value or null if the string is null or empty

Throws:

NumberFormatException - if the object can not be converted into double

isNumber

public static boolean isNumber(Object object)

Checks whether the Object is a valid Java number.

Parameters:

object - the object to be evaluated

Returns:

true if pObject is a Number or String representation of number

containsParsableNumbers

public static boolean containsParsableNumbers(Iterable<?> iterable)

Checks if all the elements are parsable number.

Parameters:

iterable - the iterable to be evaluated

Returns:

true if all elements are parsable number