java.lang.Object
- org.springframework.util.NumberUtils

```
public abstract class NumberUtils
extends Object
```
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 Description
static Set<Class<?>> STANDARD_NUMBER_TYPES
Standard number types (all immutable): Byte, Short, Integer, Long, BigInteger, Float, Double, BigDecimal.

Constructor Summary
Constructors
Constructor Description
NumberUtils()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	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 <T extends Number> T`	`parseNumber(String text, Class<T> targetClass, NumberFormat numberFormat)`	Parse the given `text` into a `Number` instance of the given target class, using the supplied `NumberFormat`.

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(String)
  - parseNumber
```
public static <T extends Number> T parseNumber(String text,
                                               Class<T> targetClass,
                                               NumberFormat numberFormat)
```
    Parse the given text into a Number instance of the given target class, using the supplied NumberFormat.
    Trims the input String before attempting to parse the number.
    Parameters:
    text - the text to convert
    targetClass - the target class to parse into
    numberFormat - the NumberFormat to use for parsing (if null, this method falls back to parseNumber(String, Class))
    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:
    NumberFormat.parse(java.lang.String, java.text.ParsePosition), convertNumberToTargetClass(java.lang.Number, java.lang.Class<T>), parseNumber(String, Class)

Class NumberUtils

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

STANDARD_NUMBER_TYPES

Constructor Detail

NumberUtils

Method Detail

convertNumberToTargetClass

parseNumber

parseNumber