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:

Serializable

public final class NumberRange

extends Range

implements 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,v 1.6 2003/08/18 02:22:24 bayard Exp $

Author:

Christopher Elkins, Stephen Colebourne

See Also:

Serialized Form

Constructor Summary

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

NumberRange(Number num1, Number num2)
Constructs a new NumberRange with the specified minimum and maximum numbers (both inclusive).

Method Summary

boolean	containsNumber(Number number) Tests whether the specified number occurs within this range.
boolean	equals(Object obj) Compares this range to another object to test if they are equal.
Number	getMaximumNumber() Returns the maximum number in this range.
Number	getMinimumNumber() Returns the minimum number in this range.
int	hashCode() Gets a hashCode for the range.
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

Constructor Detail

NumberRange

public NumberRange(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:

IllegalArgumentException - if the number is null

IllegalArgumentException - if the number doesn't implement Comparable

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

NumberRange

public NumberRange(Number num1,
                   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:

IllegalArgumentException - if either number is null

IllegalArgumentException - if the numbers are of different types

IllegalArgumentException - if the numbers don't implement Comparable

Method Detail

getMinimumNumber

public Number getMinimumNumber()

Returns the minimum number in this range.

Specified by:

getMinimumNumber in class Range

Returns:

the minimum number in this range

getMaximumNumber

public 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(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:

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

equals

public boolean equals(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 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