Java org.apache.commons.lang.math NumberUtils fields, constructors, methods, implement or subclass

Introduction

In this page you can find the methods, fields and constructors for org.apache.commons.lang.math NumberUtils.

The text is from its open source code.

Subclass

org.apache.commons.lang.math.NumberUtils has subclasses.
Click this link to see all its subclasses.

Field

Long	LONG_ZERO Reusable Long constant for zero.
Long	LONG_ONE Reusable Long constant for one.
Integer	INTEGER_ZERO Reusable Integer constant for zero.
Integer	INTEGER_ONE Reusable Integer constant for one.
Integer	INTEGER_MINUS_ONE Reusable Integer constant for minus one.
Short	SHORT_ZERO Reusable Short constant for zero.
Double	DOUBLE_ZERO Reusable Double constant for zero.
Float	FLOAT_ZERO Reusable Float constant for zero.

Constructor

	NumberUtils() `NumberUtils` instances should NOT be constructed in standard programming.

Method

int	compare(double lhs, double rhs) Compares two `doubles` for order. This method is more comprehensive than the standard Java greater than, less than and equals operators. It returns `-1` if the first value is less than the second. It returns `+1` if the first value is greater than the second. It returns `0` if the values are equal. The ordering is as follows, largest to smallest: NaN Positive infinity Maximum double Normal positive numbers +0.0 -0.0 Normal negative numbers Minimum double (`-Double.MAX_VALUE`) Negative infinity Comparing `NaN` with `NaN` will return `0`.
int	compare(float lhs, float rhs) Compares two floats for order. This method is more comprehensive than the standard Java greater than, less than and equals operators. It returns `-1` if the first value is less than the second.
BigDecimal	createBigDecimal(String str) Convert a `String` to a `BigDecimal`. Returns `null` if the string is `null`.
BigInteger	createBigInteger(String str) Convert a `String` to a `BigInteger`. Returns `null` if the string is `null`.
Double	createDouble(String str) Convert a `String` to a `Double`. Returns `null` if the string is `null`.
Float	createFloat(String str) Convert a `String` to a `Float`. Returns `null` if the string is `null`.
Integer	createInteger(String str) Convert a `String` to a `Integer`, handling hex and octal notations. Returns `null` if the string is `null`.
Long	createLong(String str) Convert a `String` to a `Long`. Returns `null` if the string is `null`.
Number	createNumber(String str) Turns a string value into a java.lang.Number. First, the value is examined for a type qualifier on the end (`'f','F','d','D','l','L'`).
boolean	isDigits(String str) Checks whether the `String` contains only digit characters. `Null` and empty String will return `false`.
boolean	isNumber(String str) Checks whether the String a valid Java number. Valid numbers include hexadecimal marked with the `0x` qualifier, scientific notation and numbers marked with a type qualifier (e.g.
long	max(long[] array) Returns the maximum value in an array.
int	max(int[] array) Returns the maximum value in an array.
short	max(short[] array) Returns the maximum value in an array.
byte	max(byte[] array) Returns the maximum value in an array.
double	max(double[] array) Returns the maximum value in an array.
float	max(float[] array) Returns the maximum value in an array.
long	max(long a, long b, long c) Gets the maximum of three `long` values.
int	max(int a, int b, int c) Gets the maximum of three `int` values.
short	max(short a, short b, short c) Gets the maximum of three `short` values.
byte	max(byte a, byte b, byte c) Gets the maximum of three `byte` values.
double	max(double a, double b, double c) Gets the maximum of three `double` values. If any value is `NaN`, `NaN` is returned.
float	max(float a, float b, float c) Gets the maximum of three `float` values. If any value is `NaN`, `NaN` is returned.
long	min(long[] array) Returns the minimum value in an array.
int	min(int[] array) Returns the minimum value in an array.
short	min(short[] array) Returns the minimum value in an array.
byte	min(byte[] array) Returns the minimum value in an array.
double	min(double[] array) Returns the minimum value in an array.
float	min(float[] array) Returns the minimum value in an array.
long	min(long a, long b, long c) Gets the minimum of three `long` values.
int	min(int a, int b, int c) Gets the minimum of three `int` values.
short	min(short a, short b, short c) Gets the minimum of three `short` values.
byte	min(byte a, byte b, byte c) Gets the minimum of three `byte` values.
double	min(double a, double b, double c) Gets the minimum of three `double` values. If any value is `NaN`, `NaN` is returned.
float	min(float a, float b, float c) Gets the minimum of three `float` values. If any value is `NaN`, `NaN` is returned.
int	stringToInt(String str) Convert a `String` to an `int`, returning `zero` if the conversion fails. If the string is `null`, `zero` is returned. NumberUtils.stringToInt(null) = 0 NumberUtils.stringToInt("") = 0 NumberUtils.stringToInt("1") = 1
int	stringToInt(String str, int defaultValue) Convert a `String` to an `int`, returning a default value if the conversion fails. If the string is `null`, the default value is returned. NumberUtils.stringToInt(null, 1) = 1 NumberUtils.stringToInt("", 1) = 1 NumberUtils.stringToInt("1", 0) = 1
double	toDouble(String str, double defaultValue) Convert a `String` to a `double`, returning a default value if the conversion fails. If the string `str` is `null`, the default value is returned. NumberUtils.toDouble(null, 1.1d) = 1.1d NumberUtils.toDouble("", 1.1d) = 1.1d NumberUtils.toDouble("1.5", 0.0d) = 1.5d
double	toDouble(String str) Convert a `String` to a `double`, returning `0.0d` if the conversion fails. If the string `str` is `null`, `0.0d` is returned. NumberUtils.toDouble(null) = 0.0d NumberUtils.toDouble("") = 0.0d NumberUtils.toDouble("1.5") = 1.5d
float	toFloat(String str) Convert a `String` to a `float`, returning `0.0f` if the conversion fails. If the string `str` is `null`, `0.0f` is returned. NumberUtils.toFloat(null) = 0.0f NumberUtils.toFloat("") = 0.0f NumberUtils.toFloat("1.5") = 1.5f
float	toFloat(String str, float defaultValue) Convert a `String` to a `float`, returning a default value if the conversion fails. If the string `str` is `null`, the default value is returned. NumberUtils.toFloat(null, 1.1f) = 1.0f NumberUtils.toFloat("", 1.1f) = 1.1f NumberUtils.toFloat("1.5", 0.0f) = 1.5f
int	toInt(String str, int defaultValue) Convert a `String` to an `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
int	toInt(String str) Convert a `String` to an `int`, returning `zero` if the conversion fails. If the string is `null`, `zero` is returned. NumberUtils.toInt(null) = 0 NumberUtils.toInt("") = 0 NumberUtils.toInt("1") = 1
long	toLong(String str) Convert a `String` to a `long`, returning `zero` if the conversion fails. If the string is `null`, `zero` is returned. NumberUtils.toLong(null) = 0L NumberUtils.toLong("") = 0L NumberUtils.toLong("1") = 1L
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