Package org.opends.server.util

Class CollectionUtils

java.lang.Object

org.opends.server.util.CollectionUtils

public final class CollectionUtils
extends Object

Utility class for Collections.

Method Summary

Modifier and Type	Method	Description
static <E,C extends Collection<E>> void	addAll(C dest, Iterable<E> source)	Adds all the elements from the provided iterable into the provided collection.
static <C extends Collection<E>,E> C	collect(Iterable<E> iterable, C outputCollection)	Collects all the elements from the provided iterable into the provided collection.
static <E> ArrayList<E>	newArrayList(E... elements)	Creates a new ArrayList with the provided elements.
static <E> HashSet<E>	newHashSet(E... elements)	Creates a new HashSet with the provided elements.
static <E> LinkedList<E>	newLinkedList(E... elements)	Creates a new LinkedList with the provided elements.
static <E> TreeSet<E>	newTreeSet(E... elements)	Creates a new TreeSet with the provided elements.
static <K,V> Map<K,V>	treeMapOf(K k1, V v1)	Returns a new hashmap with the provided mapping.
static <K,V> Map<K,V>	treeMapOf(K k1, V v1, K k2, V v2)	Returns a new hashmap with the provided mapping.
static <K,V> Map<K,V>	treeMapOf(K k1, V v1, K k2, V v2, K k3, V v3)	Returns a new hashmap with the provided mapping.
static <K,V> Map<K,V>	treeMapOf(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4)	Returns a new hashmap with the provided mapping.

Methods inherited from class java.lang.Object

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

Method Detail

newArrayList

@SafeVarargs
public static <E> ArrayList<E> newArrayList(E... elements)

Creates a new ArrayList with the provided elements.

Type Parameters:

E - the elements' type

Parameters:

elements - the elements to add to the new ArrayList

Returns:

a new ArrayList with the provided elements

newLinkedList

@SafeVarargs
public static <E> LinkedList<E> newLinkedList(E... elements)

Creates a new LinkedList with the provided elements.

Type Parameters:

E - the elements' type

Parameters:

elements - the elements to add to the new LinkedList

Returns:

a new LinkedList with the provided elements

newHashSet

@SafeVarargs
public static <E> HashSet<E> newHashSet(E... elements)

Creates a new HashSet with the provided elements.

Type Parameters:

E - the elements' type

Parameters:

elements - the elements to add to the new HashSet

Returns:

a new HashSet with the provided elements

newTreeSet

@SafeVarargs
public static <E> TreeSet<E> newTreeSet(E... elements)

Creates a new TreeSet with the provided elements.

Type Parameters:

E - the elements' type

Parameters:

elements - the elements to add to the new TreeSet

Returns:

a new TreeSet with the provided elements

collect

public static <C extends Collection<E>,E> C collect(Iterable<E> iterable,
                                                          C outputCollection)

Collects all the elements from the provided iterable into the provided collection.

Type Parameters:

C - The type of the collection

E - The type of the iterable's elements

Parameters:

iterable - the iterable from which to read elements

outputCollection - the collection where to add the iterable's elements

Returns:

the provided collection

addAll

public static <E,C extends Collection<E>> void addAll(C dest,
                                                            Iterable<E> source)

Adds all the elements from the provided iterable into the provided collection.

Type Parameters:

E - type of the elements to add

C - type of the collection where to add

Parameters:

dest - the collection where elements will be added

source - the iterable where elements will be read from

treeMapOf

public static <K,V> Map<K,V> treeMapOf(K k1,
                                                   V v1)

Returns a new hashmap with the provided mapping.

Type Parameters:

K - type of the keys

V - type of the values

Parameters:

k1 - the first key

v1 - the first value

Returns:

a new hashmap with the provided mapping.

treeMapOf

public static <K,V> Map<K,V> treeMapOf(K k1,
                                                   V v1,
                                                   K k2,
                                                   V v2)

Returns a new hashmap with the provided mapping.

Type Parameters:

K - type of the keys

V - type of the values

Parameters:

k1 - the first key

v1 - the first value

k2 - the second key

v2 - the second value

Returns:

a new hashmap with the provided mapping.

treeMapOf

public static <K,V> Map<K,V> treeMapOf(K k1,
                                                   V v1,
                                                   K k2,
                                                   V v2,
                                                   K k3,
                                                   V v3)

Returns a new hashmap with the provided mapping.

Type Parameters:

K - type of the keys

V - type of the values

Parameters:

k1 - the first key

v1 - the first value

k2 - the second key

v2 - the second value

k3 - the third key

v3 - the third value

Returns:

a new hashmap with the provided mapping.

treeMapOf

public static <K,V> Map<K,V> treeMapOf(K k1,
                                                   V v1,
                                                   K k2,
                                                   V v2,
                                                   K k3,
                                                   V v3,
                                                   K k4,
                                                   V v4)

Returns a new hashmap with the provided mapping.

Type Parameters:

K - type of the keys

V - type of the values

Parameters:

k1 - the first key

v1 - the first value

k2 - the second key

v2 - the second value

k3 - the third key

v3 - the third value

k4 - the fourth key

v4 - the fourth value

Returns:

a new hashmap with the provided mapping.