java.lang.Object
- org.apache.commons.lang3.Range<T>

Type Parameters:

T - The type of range values.

All Implemented Interfaces:

java.io.Serializable
```
public final class Range<T>
extends java.lang.Object
implements java.io.Serializable
```
An immutable range of objects from a minimum to maximum point inclusive.

The objects need to either be implementations of Comparable or you need to supply a Comparator.

#ThreadSafe# if the objects and comparator are thread-safe

Since:

3.0

See Also:

Serialized Form

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static <T extends java.lang.Comparable<T>> Range<T>`	`between(T fromInclusive, T toInclusive)`	Obtains a range with the specified minimum and maximum values (both inclusive).
`static <T> Range<T>`	`between(T fromInclusive, T toInclusive, java.util.Comparator<T> comparator)`	Obtains a range with the specified minimum and maximum values (both inclusive).
`boolean`	`contains(T element)`	Checks whether the specified element occurs within this range.
`boolean`	`containsRange(Range<T> otherRange)`	Checks whether this range contains all the elements of the specified range.
`int`	`elementCompareTo(T element)`	Checks where the specified element occurs relative to this range.
`boolean`	`equals(java.lang.Object obj)`	Compares this range to another object to test if they are equal.
`T`	`fit(T element)`	Fits the given element into this range by returning the given element or, if out of bounds, the range minimum if below, or the range maximum if above.
`java.util.Comparator<T>`	`getComparator()`	Gets the comparator being used to determine if objects are within the range.
`T`	`getMaximum()`	Gets the maximum value in this range.
`T`	`getMinimum()`	Gets the minimum value in this range.
`int`	`hashCode()`	Gets a suitable hash code for the range.
`Range<T>`	`intersectionWith(Range<T> other)`	Calculate the intersection of `this` and an overlapping Range.
`static <T extends java.lang.Comparable<T>> Range<T>`	`is(T element)`	Obtains a range using the specified element as both the minimum and maximum in this range.
`static <T> Range<T>`	`is(T element, java.util.Comparator<T> comparator)`	Obtains a range using the specified element as both the minimum and maximum in this range.
`boolean`	`isAfter(T element)`	Checks whether this range is after the specified element.
`boolean`	`isAfterRange(Range<T> otherRange)`	Checks whether this range is completely after the specified range.
`boolean`	`isBefore(T element)`	Checks whether this range is before the specified element.
`boolean`	`isBeforeRange(Range<T> otherRange)`	Checks whether this range is completely before the specified range.
`boolean`	`isEndedBy(T element)`	Checks whether this range ends with the specified element.
`boolean`	`isNaturalOrdering()`	Whether or not the Range is using the natural ordering of the elements.
`boolean`	`isOverlappedBy(Range<T> otherRange)`	Checks whether this range is overlapped by the specified range.
`boolean`	`isStartedBy(T element)`	Checks whether this range starts with the specified element.
`java.lang.String`	`toString()`	Gets the range as a `String`.
`java.lang.String`	`toString(java.lang.String format)`	Formats the receiver using the given format.

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Method Detail
  - between
```
public static <T extends java.lang.Comparable<T>> Range<T> between(T fromInclusive,
                                                                   T toInclusive)
```
    Obtains a range with the specified minimum and maximum values (both inclusive).
    
    The range uses the natural ordering of the elements to determine where values lie in the range.
    
    The arguments may be passed in the order (min,max) or (max,min). The getMinimum and getMaximum methods will return the correct values.
    
    Type Parameters:
    
    T - the type of the elements in this range
    
    Parameters:
    
    fromInclusive - the first value that defines the edge of the range, inclusive
    
    toInclusive - the second value that defines the edge of the range, inclusive
    
    Returns:
    
    the range object, not null
    
    Throws:
    
    java.lang.IllegalArgumentException - if either element is null
    
    java.lang.ClassCastException - if the elements are not Comparable
  - between
```
public static <T> Range<T> between(T fromInclusive,
                                   T toInclusive,
                                   java.util.Comparator<T> comparator)
```
    Obtains a range with the specified minimum and maximum values (both inclusive).
    
    The range uses the specified Comparator to determine where values lie in the range.
    
    The arguments may be passed in the order (min,max) or (max,min). The getMinimum and getMaximum methods will return the correct values.
    
    Type Parameters:
    
    T - the type of the elements in this range
    
    Parameters:
    
    fromInclusive - the first value that defines the edge of the range, inclusive
    
    toInclusive - the second value that defines the edge of the range, inclusive
    
    comparator - the comparator to be used, null for natural ordering
    
    Returns:
    
    the range object, not null
    
    Throws:
    
    java.lang.IllegalArgumentException - if either element is null
    
    java.lang.ClassCastException - if using natural ordering and the elements are not Comparable
  - is
```
public static <T extends java.lang.Comparable<T>> Range<T> is(T element)
```
    Obtains a range using the specified element as both the minimum and maximum in this range.
    
    The range uses the natural ordering of the elements to determine where values lie in the range.
    
    Type Parameters:
    
    T - the type of the elements in this range
    
    Parameters:
    
    element - the value to use for this range, not null
    
    Returns:
    
    the range object, not null
    
    Throws:
    
    java.lang.IllegalArgumentException - if the element is null
    
    java.lang.ClassCastException - if the element is not Comparable
  - is
```
public static <T> Range<T> is(T element,
                              java.util.Comparator<T> comparator)
```
    Obtains a range using the specified element as both the minimum and maximum in this range.
    
    The range uses the specified Comparator to determine where values lie in the range.
    
    Type Parameters:
    
    T - the type of the elements in this range
    
    Parameters:
    
    element - the value to use for this range, must not be null
    
    comparator - the comparator to be used, null for natural ordering
    
    Returns:
    
    the range object, not null
    
    Throws:
    
    java.lang.IllegalArgumentException - if the element is null
    
    java.lang.ClassCastException - if using natural ordering and the elements are not Comparable
  - contains
```
public boolean contains(T element)
```
    Checks whether the specified element occurs within this range.
    
    Parameters:
    
    element - the element to check for, null returns false
    
    Returns:
    
    true if the specified element occurs within this range
  - containsRange
```
public boolean containsRange(Range<T> otherRange)
```
    Checks whether this range contains all the elements of the specified range.
    
    This method may fail if the ranges have two different comparators or element types.
    
    Parameters:
    
    otherRange - the range to check, null returns false
    
    Returns:
    
    true if this range contains the specified range
    
    Throws:
    
    java.lang.RuntimeException - if ranges cannot be compared
  - elementCompareTo
```
public int elementCompareTo(T element)
```
    Checks where the specified element occurs relative to this range.
    
    The API is reminiscent of the Comparable interface returning -1 if the element is before the range, 0 if contained within the range and 1 if the element is after the range.
    
    Parameters:
    
    element - the element to check for, not null
    
    Returns:
    
    -1, 0 or +1 depending on the element's location relative 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 minimum and maximum values must be equal, which ignores any differences in the comparator.
    
    Overrides:
    
    equals in class java.lang.Object
    
    Parameters:
    
    obj - the reference object with which to compare
    
    Returns:
    
    true if this object is equal
  - getComparator
```
public java.util.Comparator<T> getComparator()
```
    Gets the comparator being used to determine if objects are within the range.
    
    Natural ordering uses an internal comparator implementation, thus this method never returns null. See isNaturalOrdering().
    
    Returns:
    
    the comparator being used, not null
  - getMaximum
```
public T getMaximum()
```
    Gets the maximum value in this range.
    
    Returns:
    
    the maximum value in this range, not null
  - getMinimum
```
public T getMinimum()
```
    Gets the minimum value in this range.
    
    Returns:
    
    the minimum value in this range, not null
  - hashCode
```
public int hashCode()
```
    Gets a suitable hash code for the range.
    
    Overrides:
    
    hashCode in class java.lang.Object
    
    Returns:
    
    a hash code value for this object
  - intersectionWith
```
public Range<T> intersectionWith(Range<T> other)
```
    Calculate the intersection of this and an overlapping Range.
    
    Parameters:
    
    other - overlapping Range
    
    Returns:
    
    range representing the intersection of this and other (this if equal)
    
    Throws:
    
    java.lang.IllegalArgumentException - if other does not overlap this
    
    Since:
    
    3.0.1
  - isAfter
```
public boolean isAfter(T element)
```
    Checks whether this range is after the specified element.
    
    Parameters:
    
    element - the element to check for, null returns false
    
    Returns:
    
    true if this range is entirely after the specified element
  - isAfterRange
```
public boolean isAfterRange(Range<T> otherRange)
```
    Checks whether this range is completely after the specified range.
    
    This method may fail if the ranges have two different comparators or element types.
    
    Parameters:
    
    otherRange - the range to check, null returns false
    
    Returns:
    
    true if this range is completely after the specified range
    
    Throws:
    
    java.lang.RuntimeException - if ranges cannot be compared
  - isBefore
```
public boolean isBefore(T element)
```
    Checks whether this range is before the specified element.
    
    Parameters:
    
    element - the element to check for, null returns false
    
    Returns:
    
    true if this range is entirely before the specified element
  - isBeforeRange
```
public boolean isBeforeRange(Range<T> otherRange)
```
    Checks whether this range is completely before the specified range.
    
    This method may fail if the ranges have two different comparators or element types.
    
    Parameters:
    
    otherRange - the range to check, null returns false
    
    Returns:
    
    true if this range is completely before the specified range
    
    Throws:
    
    java.lang.RuntimeException - if ranges cannot be compared
  - isEndedBy
```
public boolean isEndedBy(T element)
```
    Checks whether this range ends with the specified element.
    
    Parameters:
    
    element - the element to check for, null returns false
    
    Returns:
    
    true if the specified element occurs within this range
  - isNaturalOrdering
```
public boolean isNaturalOrdering()
```
    Whether or not the Range is using the natural ordering of the elements.
    
    Natural ordering uses an internal comparator implementation, thus this method is the only way to check if a null comparator was specified.
    
    Returns:
    
    true if using natural ordering
  - isOverlappedBy
```
public boolean isOverlappedBy(Range<T> otherRange)
```
    Checks whether this range is overlapped by the specified range.
    
    Two ranges overlap if there is at least one element in common.
    
    This method may fail if the ranges have two different comparators or element types.
    
    Parameters:
    
    otherRange - the range to test, null returns false
    
    Returns:
    
    true if the specified range overlaps with this range; otherwise, false
    
    Throws:
    
    java.lang.RuntimeException - if ranges cannot be compared
  - isStartedBy
```
public boolean isStartedBy(T element)
```
    Checks whether this range starts with the specified element.
    
    Parameters:
    
    element - the element to check for, null returns false
    
    Returns:
    
    true if the specified element occurs within this range
  - fit
```
public T fit(T element)
```
    Fits the given element into this range by returning the given element or, if out of bounds, the range minimum if below, or the range maximum if above.
    
    Range<Integer> range = Range.between(16, 64); range.fit(-9) --> 16 range.fit(0) --> 16 range.fit(15) --> 16 range.fit(16) --> 16 range.fit(17) --> 17 ... range.fit(63) --> 63 range.fit(64) --> 64 range.fit(99) --> 64
    Parameters:
    
    element - the element to check for, not null
    
    Returns:
    
    the minimum, the element, or the maximum depending on the element's location relative to the range
    
    Since:
    
    3.10
  - toString
```
public java.lang.String toString()
```
    Gets the range as a String.
    
    The format of the String is '[min..max]'.
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    the String representation of this range
  - toString
```
public java.lang.String toString(java.lang.String format)
```
    Formats the receiver using the given format.
    
    This uses Formattable to perform the formatting. Three variables may be used to embed the minimum, maximum and comparator. Use %1$s for the minimum element, %2$s for the maximum element and %3$s for the comparator. The default format used by toString() is [%1$s..%2$s].
    
    Parameters:
    
    format - the format string, optionally containing %1$s, %2$s and %3$s, not null
    
    Returns:
    
    the formatted string, not null

Class Range<T>

Method Summary

Methods inherited from class java.lang.Object

Method Detail

between

between

is

is

contains

containsRange

elementCompareTo

equals

getComparator

getMaximum

getMinimum

hashCode

intersectionWith

isAfter

isAfterRange

isBefore

isBeforeRange

isEndedBy

isNaturalOrdering

isOverlappedBy

isStartedBy

fit

toString

toString