com.helger.commons.collection.impl

Class EmptySortedSet<T>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<T>

com.helger.commons.collection.impl.EmptySortedSet<T>

Type Parameters:

T - Content type

All Implemented Interfaces:

Iterable<T>, Collection<T>, Set<T>, SortedSet<T>

public final class EmptySortedSet<T>
extends AbstractSet<T>
implements SortedSet<T>

Default implementation of an empty sorted set.

Author:

Philip Helger

Constructor Summary

Constructors

Constructor and Description
EmptySortedSet()

Method Summary

Methods

Modifier and Type	Method and Description
Comparator<Object>	comparator()
boolean	contains(Object obj)
T	first()
SortedSet<T>	headSet(Object toElement)
boolean	isEmpty()
Iterator<T>	iterator()
T	last()
int	size()
SortedSet<T>	subSet(Object fromElement, Object toElement)
SortedSet<T>	tailSet(Object fromElement)

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

add, addAll, clear, containsAll, remove, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

add, addAll, clear, containsAll, equals, hashCode, remove, removeAll, retainAll, toArray, toArray

Constructor Detail

EmptySortedSet

public EmptySortedSet()

Method Detail

iterator

@Nonnull
public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>

Specified by:

iterator in interface Collection<T>

Specified by:

iterator in interface Set<T>

Specified by:

iterator in class AbstractCollection<T>

size

@Nonnegative
public int size()

Specified by:

size in interface Collection<T>

Specified by:

size in interface Set<T>

Specified by:

size in class AbstractCollection<T>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<T>

Specified by:

isEmpty in interface Set<T>

Overrides:

isEmpty in class AbstractCollection<T>

contains

public boolean contains(Object obj)

Specified by:

contains in interface Collection<T>

Specified by:

contains in interface Set<T>

Overrides:

contains in class AbstractCollection<T>

comparator

@Nullable
public Comparator<Object> comparator()

Specified by:

comparator in interface SortedSet<T>

subSet

@Nonnull
public SortedSet<T> subSet(Object fromElement,
                          Object toElement)

Specified by:

subSet in interface SortedSet<T>

headSet

@Nonnull
public SortedSet<T> headSet(Object toElement)

Specified by:

headSet in interface SortedSet<T>

tailSet

@Nonnull
public SortedSet<T> tailSet(Object fromElement)

Specified by:

tailSet in interface SortedSet<T>

first

@Nullable
public T first()

Specified by:

first in interface SortedSet<T>

last

@Nullable
public T last()

Specified by:

last in interface SortedSet<T>