Package com.google.common.collect
Class NullsLastOrdering<T>
- java.lang.Object
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- com.google.common.collect.Ordering<T>
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- com.google.common.collect.NullsLastOrdering<T>
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- All Implemented Interfaces:
java.io.Serializable
,java.util.Comparator<T>
final class NullsLastOrdering<T> extends Ordering<T> implements java.io.Serializable
An ordering that treatsnull
as greater than all other values.
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Nested Class Summary
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Nested classes/interfaces inherited from class com.google.common.collect.Ordering
Ordering.ArbitraryOrdering, Ordering.IncomparableValueException
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Field Summary
Fields Modifier and Type Field Description (package private) Ordering<? super T>
ordering
private static long
serialVersionUID
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Fields inherited from class com.google.common.collect.Ordering
LEFT_IS_GREATER, RIGHT_IS_GREATER
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Constructor Summary
Constructors Constructor Description NullsLastOrdering(Ordering<? super T> ordering)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
compare(T left, T right)
boolean
equals(java.lang.Object object)
int
hashCode()
<S extends T>
Ordering<S>nullsFirst()
Returns an ordering that treatsnull
as less than all other values and usesthis
to compare non-null values.<S extends T>
Ordering<S>nullsLast()
Returns an ordering that treatsnull
as greater than all other values and uses this ordering to compare non-null values.<S extends T>
Ordering<S>reverse()
Returns the reverse of this ordering; theOrdering
equivalent toCollections.reverseOrder(Comparator)
.java.lang.String
toString()
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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
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Field Detail
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serialVersionUID
private static final long serialVersionUID
- See Also:
- Constant Field Values
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Method Detail
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reverse
public <S extends T> Ordering<S> reverse()
Description copied from class:Ordering
Returns the reverse of this ordering; theOrdering
equivalent toCollections.reverseOrder(Comparator)
.Java 8 users: Use
thisComparator.reversed()
instead.
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nullsFirst
public <S extends T> Ordering<S> nullsFirst()
Description copied from class:Ordering
Returns an ordering that treatsnull
as less than all other values and usesthis
to compare non-null values.Java 8 users: Use
Comparator.nullsFirst(thisComparator)
instead.- Overrides:
nullsFirst
in classOrdering<T>
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nullsLast
public <S extends T> Ordering<S> nullsLast()
Description copied from class:Ordering
Returns an ordering that treatsnull
as greater than all other values and uses this ordering to compare non-null values.Java 8 users: Use
Comparator.nullsLast(thisComparator)
instead.
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equals
public boolean equals(java.lang.Object object)
- Specified by:
equals
in interfacejava.util.Comparator<T>
- Overrides:
equals
in classjava.lang.Object
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hashCode
public int hashCode()
- Overrides:
hashCode
in classjava.lang.Object
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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