io.beanmother.core.util

Class NumberUtils

java.lang.Object

io.beanmother.core.util.NumberUtils

public abstract class NumberUtils
extends Object

This code is from spring framework org.springframework.util.NumberUtils Miscellaneous utility methods for number conversion and parsing.

Mainly for internal use within the framework; consider Apache's Commons Lang for a more comprehensive suite of number utilities.

Since:

1.1.2

Author:

Juergen Hoeller, Rob Harrop

Field Summary

Fields

Modifier and Type	Field and Description
static Set<Class<?>>	STANDARD_NUMBER_TYPES Standard number types (all immutable): Byte, Short, Integer, Long, BigInteger, Float, Double, BigDecimal.

Constructor Summary

Constructors

Constructor and Description
NumberUtils()

Method Summary

Modifier and Type	Method and Description
static <T extends Number> T	convertNumberToTargetClass(Number number, Class<T> targetClass) Convert the given number into an instance of the given target class.
static <T extends Number> T	parseNumber(String text, Class<T> targetClass) Parse the given text into a Number instance of the given target class, using the corresponding decode / valueOf method.
static String	trimAllWhitespace(String str)

Methods inherited from class java.lang.Object

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

Field Detail

STANDARD_NUMBER_TYPES

public static final Set<Class<?>> STANDARD_NUMBER_TYPES

Standard number types (all immutable): Byte, Short, Integer, Long, BigInteger, Float, Double, BigDecimal.

Constructor Detail

NumberUtils

public NumberUtils()

Method Detail

convertNumberToTargetClass

public static <T extends Number> T convertNumberToTargetClass(Number number,
                                                              Class<T> targetClass)
                                                       throws IllegalArgumentException

Convert the given number into an instance of the given target class.

Parameters:

number - the number to convert

targetClass - the target class to convert to

Returns:

the converted number

Throws:

IllegalArgumentException - if the target class is not supported (i.e. not a standard Number subclass as included in the JDK)

See Also:

Byte, Short, Integer, Long, BigInteger, Float, Double, BigDecimal

parseNumber

public static <T extends Number> T parseNumber(String text,
                                               Class<T> targetClass)

Parse the given text into a Number instance of the given target class, using the corresponding decode / valueOf method.

Trims the input String before attempting to parse the number.

Supports numbers in hex format (with leading "0x", "0X", or "#") as well.

Parameters:

text - the text to convert

targetClass - the target class to parse into

Returns:

the parsed number

Throws:

IllegalArgumentException - if the target class is not supported (i.e. not a standard Number subclass as included in the JDK)

See Also:

Byte.decode(java.lang.String), Short.decode(java.lang.String), Integer.decode(java.lang.String), Long.decode(java.lang.String), decodeBigInteger(String), Float.valueOf(java.lang.String), Double.valueOf(java.lang.String), BigDecimal.BigDecimal(String)

trimAllWhitespace

public static String trimAllWhitespace(String str)