org.apache.commons.lang.math

Class NumberRange

java.lang.Object

org.apache.commons.lang.math.Range

org.apache.commons.lang.math.NumberRange

All Implemented Interfaces:

java.io.Serializable

public final class NumberRange
extends Range
implements java.io.Serializable

NumberRange represents an inclusive range of Number objects of the same type.

Since:

2.0 (previously in org.apache.commons.lang)

Version:

$Id: NumberRange.java 1057072 2011-01-10 01:55:57Z niallp $

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private int	hashCode Cached output hashCode (class is immutable).
private java.lang.Number	max The maximum number in this range.
private java.lang.Number	min The minimum number in this range.
private static long	serialVersionUID Required for serialization support.
private java.lang.String	toString Cached output toString (class is immutable).

Constructor Summary

Constructors

Constructor and Description
NumberRange(java.lang.Number num) Constructs a new NumberRange using the specified number as both the minimum and maximum in this range.
NumberRange(java.lang.Number num1, java.lang.Number num2) Constructs a new NumberRange with the specified minimum and maximum numbers (both inclusive).

Method Summary

Modifier and Type	Method and Description
boolean	containsNumber(java.lang.Number number) Tests whether the specified number occurs within this range.
boolean	equals(java.lang.Object obj) Compares this range to another object to test if they are equal.
java.lang.Number	getMaximumNumber() Returns the maximum number in this range.
java.lang.Number	getMinimumNumber() Returns the minimum number in this range.
int	hashCode() Gets a hashCode for the range.
java.lang.String	toString() Gets the range as a String.

Methods inherited from class org.apache.commons.lang.math.Range

containsDouble, containsDouble, containsFloat, containsFloat, containsInteger, containsInteger, containsLong, containsLong, containsRange, getMaximumDouble, getMaximumFloat, getMaximumInteger, getMaximumLong, getMinimumDouble, getMinimumFloat, getMinimumInteger, getMinimumLong, overlapsRange

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

serialVersionUID

private static final long serialVersionUID

Required for serialization support.

See Also:

Serializable, Constant Field Values

min

private final java.lang.Number min

The minimum number in this range.

max

private final java.lang.Number max

The maximum number in this range.

hashCode

private transient int hashCode

Cached output hashCode (class is immutable).

toString

private transient java.lang.String toString

Cached output toString (class is immutable).

Constructor Detail

NumberRange

public NumberRange(java.lang.Number num)

Constructs a new NumberRange using the specified number as both the minimum and maximum in this range.

Parameters:

num - the number to use for this range

Throws:

java.lang.IllegalArgumentException - if the number is null

java.lang.IllegalArgumentException - if the number doesn't implement Comparable

java.lang.IllegalArgumentException - if the number is Double.NaN or Float.NaN

NumberRange

public NumberRange(java.lang.Number num1,
                   java.lang.Number num2)

Constructs a new NumberRange with the specified minimum and maximum numbers (both inclusive).

The arguments may be passed in the order (min,max) or (max,min). The getMinimumNumber() and getMaximumNumber() methods will return the correct value.

This constructor is designed to be used with two Number objects of the same type. If two objects of different types are passed in, an exception is thrown.

Parameters:

num1 - first number that defines the edge of the range, inclusive

num2 - second number that defines the edge of the range, inclusive

Throws:

java.lang.IllegalArgumentException - if either number is null

java.lang.IllegalArgumentException - if the numbers are of different types

java.lang.IllegalArgumentException - if the numbers don't implement Comparable

Method Detail

getMinimumNumber

public java.lang.Number getMinimumNumber()

Returns the minimum number in this range.

Specified by:

getMinimumNumber in class Range

Returns:

the minimum number in this range

getMaximumNumber

public java.lang.Number getMaximumNumber()

Returns the maximum number in this range.

Specified by:

getMaximumNumber in class Range

Returns:

the maximum number in this range

containsNumber

public boolean containsNumber(java.lang.Number number)

Tests whether the specified number occurs within this range.

null is handled and returns false.

Specified by:

containsNumber in class Range

Parameters:

number - the number to test, may be null

Returns:

true if the specified number occurs within this range

Throws:

java.lang.IllegalArgumentException - if the number is of a different type to the range

equals

public boolean equals(java.lang.Object obj)

Compares this range to another object to test if they are equal.

.

To be equal, the class, minimum and maximum must be equal.

Overrides:

equals in class Range

Parameters:

obj - the reference object with which to compare

Returns:

true if this object is equal

hashCode

public int hashCode()

Gets a hashCode for the range.

Overrides:

hashCode in class Range

Returns:

a hash code value for this object

toString

public java.lang.String toString()

Gets the range as a String.

The format of the String is 'Range[min,max]'.

Overrides:

toString in class Range

Returns:

the String representation of this range