Package com.google.common.collect

Class NaturalOrdering

java.lang.Object

com.google.common.collect.Ordering<java.lang.Comparable>

com.google.common.collect.NaturalOrdering

All Implemented Interfaces:

java.io.Serializable, java.util.Comparator<java.lang.Comparable>

final class NaturalOrdering
extends Ordering<java.lang.Comparable>
implements java.io.Serializable

An ordering that uses the natural order of the values.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.common.collect.Ordering

Ordering.ArbitraryOrdering, Ordering.IncomparableValueException

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static NaturalOrdering	INSTANCE
private Ordering<java.lang.Comparable>	nullsFirst
private Ordering<java.lang.Comparable>	nullsLast
private static long	serialVersionUID

Fields inherited from class com.google.common.collect.Ordering

LEFT_IS_GREATER, RIGHT_IS_GREATER

Constructor Summary

Constructors

Modifier	Constructor	Description
private	NaturalOrdering()

Method Summary

Modifier and Type	Method	Description
int	compare(java.lang.Comparable left, java.lang.Comparable right)
<S extends java.lang.Comparable> Ordering<S>	nullsFirst()	Returns an ordering that treats null as less than all other values and uses this to compare non-null values.
<S extends java.lang.Comparable> Ordering<S>	nullsLast()	Returns an ordering that treats null as greater than all other values and uses this ordering to compare non-null values.
private java.lang.Object	readResolve()
<S extends java.lang.Comparable> Ordering<S>	reverse()	Returns the reverse of this ordering; the Ordering equivalent to Collections.reverseOrder(Comparator).
java.lang.String	toString()

Methods inherited from class com.google.common.collect.Ordering

allEqual, arbitrary, binarySearch, compound, compound, explicit, explicit, from, from, greatestOf, greatestOf, immutableSortedCopy, isOrdered, isStrictlyOrdered, leastOf, leastOf, lexicographical, max, max, max, max, min, min, min, min, natural, onKeys, onResultOf, sortedCopy, usingToString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Detail

INSTANCE

static final NaturalOrdering INSTANCE

nullsFirst

private transient Ordering<java.lang.Comparable> nullsFirst

nullsLast

private transient Ordering<java.lang.Comparable> nullsLast

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

NaturalOrdering

private NaturalOrdering()

Method Detail

compare

public int compare(java.lang.Comparable left,
                   java.lang.Comparable right)

Specified by:

compare in interface java.util.Comparator<java.lang.Comparable>

Specified by:

compare in class Ordering<java.lang.Comparable>

nullsFirst

public <S extends java.lang.Comparable> Ordering<S> nullsFirst()

Description copied from class: Ordering

Returns an ordering that treats null as less than all other values and uses this to compare non-null values.

Java 8 users: Use Comparator.nullsFirst(thisComparator) instead.

Overrides:

nullsFirst in class Ordering<java.lang.Comparable>

nullsLast

public <S extends java.lang.Comparable> Ordering<S> nullsLast()

Description copied from class: Ordering

Returns an ordering that treats null as greater than all other values and uses this ordering to compare non-null values.

Java 8 users: Use Comparator.nullsLast(thisComparator) instead.

Overrides:

nullsLast in class Ordering<java.lang.Comparable>

reverse

public <S extends java.lang.Comparable> Ordering<S> reverse()

Description copied from class: Ordering

Returns the reverse of this ordering; the Ordering equivalent to Collections.reverseOrder(Comparator).

Java 8 users: Use thisComparator.reversed() instead.

Overrides:

reverse in class Ordering<java.lang.Comparable>

readResolve

private java.lang.Object readResolve()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object