Collections (java-runtime 7.0.75 API)

java.lang.Object
- java.util.Collections

```
public class Collections
extends Object
```
Collections contains static methods which operate on Collection classes.

Since:

1.2

Field Summary

Fields
Modifier and Type	Field and Description
`static List`	`EMPTY_LIST` An empty immutable instance of `List`.
`static Map`	`EMPTY_MAP` An empty immutable instance of `Map`.
`static Set`	`EMPTY_SET` An empty immutable instance of `Set`.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static <T> boolean`	`addAll(Collection<? super T> c, T... a)` Adds all the specified elements to the specified collection.
`static <T> Queue<T>`	`asLifoQueue(Deque<T> deque)` Answers a LIFO Queue as a view of a Deque.
`static <T> int`	`binarySearch(List<? extends Comparable<? super T>> list, T object)` Performs a binary search for the specified element in the specified sorted list.
`static <T> int`	`binarySearch(List<? extends T> list, T object, Comparator<? super T> comparator)` Performs a binary search for the specified element in the specified sorted list using the specified comparator.
`static <E> Collection<E>`	`checkedCollection(Collection<E> c, Class<E> type)` Returns a dynamically typesafe view of the specified collection.
`static <T> void`	`copy(List<? super T> destination, List<? extends T> source)` Copies the elements from the source list to the destination list.
`static boolean`	`disjoint(Collection<?> c1, Collection<?> c2)` Returns whether the specified collections have no elements in common.
`static <T> List<T>`	`emptyList()` Returns a type-safe empty, immutable `List`.
`static <K,V> Map<K,V>`	`emptyMap()` Returns a type-safe empty, immutable `Map`.
`static <T> Set<T>`	`emptySet()` Returns a type-safe empty, immutable `Set`.
`static <T> Enumeration<T>`	`enumeration(Collection<T> collection)` Returns an `Enumeration` on the specified collection.
`static <T> void`	`fill(List<? super T> list, T object)` Fills the specified list with the specified element.
`static int`	`frequency(Collection<?> c, Object o)` Returns the number of elements in the `Collection` that match the `Object` passed.
`static int`	`indexOfSubList(List<?> list, List<?> sublist)` Searches the `list` for `sublist` and returns the beginning index of the first occurrence.
`static int`	`lastIndexOfSubList(List<?> list, List<?> sublist)` Searches the `list` for `sublist` and returns the beginning index of the last occurrence.
`static <T> ArrayList<T>`	`list(Enumeration<T> enumeration)` Returns an `ArrayList` with all the elements in the `enumeration`.
`static <T extends Object & Comparable<? super T>> T`	`max(Collection<? extends T> collection)` Searches the specified collection for the maximum element.
`static <T> T`	`max(Collection<? extends T> collection, Comparator<? super T> comparator)` Searches the specified collection for the maximum element using the specified comparator.
`static <T extends Object & Comparable<? super T>> T`	`min(Collection<? extends T> collection)` Searches the specified collection for the minimum element.
`static <T> T`	`min(Collection<? extends T> collection, Comparator<? super T> comparator)` Searches the specified collection for the minimum element using the specified comparator.
`static <T> List<T>`	`nCopies(int length, T object)` Returns a list containing the specified number of the specified element.
`static <E> Set<E>`	`newSetFromMap(Map<E,Boolean> map)` Answers a set backed by a map.
`static <T> boolean`	`replaceAll(List<T> list, T obj, T obj2)` Replaces all occurrences of Object `obj` in `list` with `newObj`.
`static void`	`reverse(List<?> list)` Modifies the specified `List` by reversing the order of the elements.
`static <T> Comparator<T>`	`reverseOrder()` A comparator which reverses the natural order of the elements.
`static <T> Comparator<T>`	`reverseOrder(Comparator<T> c)` Returns a `Comparator` that reverses the order of the `Comparator` passed.
`static void`	`rotate(List<?> lst, int dist)` Rotates the elements in `list` by the distance `dist`
`static void`	`shuffle(List<?> list)` Moves every element of the list to a random new position in the list.
`static void`	`shuffle(List<?> list, Random random)` Moves every element of the list to a random new position in the list using the specified random number generator.
`static <E> Set<E>`	`singleton(E object)` Returns a set containing the specified element.
`static <E> List<E>`	`singletonList(E object)` Returns a list containing the specified element.
`static <K,V> Map<K,V>`	`singletonMap(K key, V value)` Returns a Map containing the specified key and value.
`static <T extends Comparable<? super T>> void`	`sort(List<T> list)` Sorts the specified list in ascending natural order.
`static <T> void`	`sort(List<T> list, Comparator<? super T> comparator)` Sorts the specified list using the specified comparator.
`static void`	`swap(List<?> list, int index1, int index2)` Swaps the elements of list `list` at indices `index1` and `index2`.
`static <T> Collection<T>`	`synchronizedCollection(Collection<T> collection)` Returns a wrapper on the specified collection which synchronizes all access to the collection.
`static <T> List<T>`	`synchronizedList(List<T> list)` Returns a wrapper on the specified List which synchronizes all access to the List.
`static <K,V> Map<K,V>`	`synchronizedMap(Map<K,V> map)` Returns a wrapper on the specified map which synchronizes all access to the map.
`static <E> Set<E>`	`synchronizedSet(Set<E> set)` Returns a wrapper on the specified set which synchronizes all access to the set.
`static <K,V> SortedMap<K,V>`	`synchronizedSortedMap(SortedMap<K,V> map)` Returns a wrapper on the specified sorted map which synchronizes all access to the sorted map.
`static <E> SortedSet<E>`	`synchronizedSortedSet(SortedSet<E> set)` Returns a wrapper on the specified sorted set which synchronizes all access to the sorted set.
`static <E> Collection<E>`	`unmodifiableCollection(Collection<? extends E> collection)` Returns a wrapper on the specified collection which throws an `UnsupportedOperationException` whenever an attempt is made to modify the collection.
`static <E> List<E>`	`unmodifiableList(List<? extends E> list)` Returns a wrapper on the specified list which throws an `UnsupportedOperationException` whenever an attempt is made to modify the list.
`static <K,V> Map<K,V>`	`unmodifiableMap(Map<? extends K,? extends V> map)` Returns a wrapper on the specified map which throws an `UnsupportedOperationException` whenever an attempt is made to modify the map.
`static <E> Set<E>`	`unmodifiableSet(Set<? extends E> set)` Returns a wrapper on the specified set which throws an `UnsupportedOperationException` whenever an attempt is made to modify the set.
`static <K,V> SortedMap<K,V>`	`unmodifiableSortedMap(SortedMap<K,? extends V> map)` Returns a wrapper on the specified sorted map which throws an `UnsupportedOperationException` whenever an attempt is made to modify the sorted map.
`static <E> SortedSet<E>`	`unmodifiableSortedSet(SortedSet<E> set)` Returns a wrapper on the specified sorted set which throws an `UnsupportedOperationException` whenever an attempt is made to modify the sorted set.

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - EMPTY_LIST
```
public static final List EMPTY_LIST
```
    An empty immutable instance of List.
  - EMPTY_SET
```
public static final Set EMPTY_SET
```
    An empty immutable instance of Set.
  - EMPTY_MAP
```
public static final Map EMPTY_MAP
```
    An empty immutable instance of Map.
- Method Detail
  - binarySearch
```
public static <T> int binarySearch(List<? extends Comparable<? super T>> list,
                                   T object)
```
    Performs a binary search for the specified element in the specified sorted list. The list needs to be already sorted in natural sorting order. Searching in an unsorted array has an undefined result. It's also undefined which element is found if there are multiple occurrences of the same element.
    
    Parameters:
    
    list - the sorted list to search.
    
    object - the element to find.
    
    Returns:
    
    the non-negative index of the element, or a negative index which is the -index - 1 where the element would be inserted
    
    Throws:
    
    ClassCastException - if an element in the List or the search element does not implement Comparable, or cannot be compared to each other.
  - binarySearch
```
public static <T> int binarySearch(List<? extends T> list,
                                   T object,
                                   Comparator<? super T> comparator)
```
    Performs a binary search for the specified element in the specified sorted list using the specified comparator. The list needs to be already sorted according to the comparator passed. Searching in an unsorted array has an undefined result. It's also undefined which element is found if there are multiple occurrences of the same element.
    
    Type Parameters:
    
    T - The element type
    
    Parameters:
    
    list - the sorted List to search.
    
    object - the element to find.
    
    comparator - the comparator. If the comparator is null then the search uses the objects' natural ordering.
    
    Returns:
    
    the non-negative index of the element, or a negative index which is the -index - 1 where the element would be inserted.
    
    Throws:
    
    ClassCastException - when an element in the list and the searched element cannot be compared to each other using the comparator.
  - copy
```
public static <T> void copy(List<? super T> destination,
                            List<? extends T> source)
```
    Copies the elements from the source list to the destination list. At the end both lists will have the same objects at the same index. If the destination array is larger than the source list, the elements in the destination list with index >= source.size() will be unchanged.
    
    Parameters:
    
    destination - the list whose elements are set from the source list.
    
    source - the list with the elements to be copied into the destination.
    
    Throws:
    
    IndexOutOfBoundsException - when the destination list is smaller than the source list.
    
    UnsupportedOperationException - when replacing an element in the destination list is not supported.
  - enumeration
```
public static <T> Enumeration<T> enumeration(Collection<T> collection)
```
    Returns an Enumeration on the specified collection.
    
    Parameters:
    
    collection - the collection to enumerate.
    
    Returns:
    
    an Enumeration.
  - fill
```
public static <T> void fill(List<? super T> list,
                            T object)
```
    Fills the specified list with the specified element.
    
    Parameters:
    
    list - the list to fill.
    
    object - the element to fill the list with.
    
    Throws:
    
    UnsupportedOperationException - when replacing an element in the List is not supported.
  - max
```
public static <T extends Object & Comparable<? super T>> T max(Collection<? extends T> collection)
```
    Searches the specified collection for the maximum element.
    
    Parameters:
    
    collection - the collection to search.
    
    Returns:
    
    the maximum element in the Collection.
    
    Throws:
    
    ClassCastException - when an element in the collection does not implement Comparable or elements cannot be compared to each other.
  - max
```
public static <T> T max(Collection<? extends T> collection,
                        Comparator<? super T> comparator)
```
    Searches the specified collection for the maximum element using the specified comparator.
    
    Parameters:
    
    collection - the collection to search.
    
    comparator - the comparator.
    
    Returns:
    
    the maximum element in the Collection.
    
    Throws:
    
    ClassCastException - when elements in the collection cannot be compared to each other using the Comparator.
  - min
```
public static <T extends Object & Comparable<? super T>> T min(Collection<? extends T> collection)
```
    Searches the specified collection for the minimum element.
    
    Parameters:
    
    collection - the collection to search.
    
    Returns:
    
    the minimum element in the collection.
    
    Throws:
    
    ClassCastException - when an element in the collection does not implement Comparable or elements cannot be compared to each other.
  - min
```
public static <T> T min(Collection<? extends T> collection,
                        Comparator<? super T> comparator)
```
    Searches the specified collection for the minimum element using the specified comparator.
    
    Parameters:
    
    collection - the collection to search.
    
    comparator - the comparator.
    
    Returns:
    
    the minimum element in the collection.
    
    Throws:
    
    ClassCastException - when elements in the collection cannot be compared to each other using the Comparator.
  - nCopies
```
public static <T> List<T> nCopies(int length,
                                  T object)
```
    Returns a list containing the specified number of the specified element. The list cannot be modified. The list is serializable.
    
    Parameters:
    
    length - the size of the returned list.
    
    object - the element to be added length times to a list.
    
    Returns:
    
    a list containing length copies of the element.
    
    Throws:
    
    IllegalArgumentException - when length < 0.
  - reverse
```
public static void reverse(List<?> list)
```
    Modifies the specified List by reversing the order of the elements.
    
    Parameters:
    
    list - the list to reverse.
    
    Throws:
    
    UnsupportedOperationException - when replacing an element in the List is not supported.
  - reverseOrder
```
public static <T> Comparator<T> reverseOrder()
```
    A comparator which reverses the natural order of the elements. The Comparator that's returned is Serializable.
    
    Returns:
    
    a Comparator instance.
    
    See Also:
    
    Comparator, Comparable, Serializable
  - reverseOrder
```
public static <T> Comparator<T> reverseOrder(Comparator<T> c)
```
    Returns a Comparator that reverses the order of the Comparator passed. If the Comparator passed is null, then this method is equivalent to reverseOrder().
    The Comparator that's returned is Serializable if the Comparator passed is serializable or null.
    
    Parameters:
    
    c - the Comparator to reverse or null.
    
    Returns:
    
    a Comparator instance.
    
    Since:
    
    1.5
    
    See Also:
    
    Comparator
  - shuffle
```
public static void shuffle(List<?> list)
```
    Moves every element of the list to a random new position in the list.
    
    Parameters:
    
    list - the List to shuffle.
    
    Throws:
    
    UnsupportedOperationException - when replacing an element in the List is not supported.
  - shuffle
```
public static void shuffle(List<?> list,
                           Random random)
```
    Moves every element of the list to a random new position in the list using the specified random number generator.
    
    Parameters:
    
    list - the list to shuffle.
    
    random - the random number generator.
    
    Throws:
    
    UnsupportedOperationException - when replacing an element in the list is not supported.
  - singleton
```
public static <E> Set<E> singleton(E object)
```
    Returns a set containing the specified element. The set cannot be modified. The set is serializable.
    
    Parameters:
    
    object - the element.
    
    Returns:
    
    a set containing the element.
  - singletonList
```
public static <E> List<E> singletonList(E object)
```
    Returns a list containing the specified element. The list cannot be modified. The list is serializable.
    
    Parameters:
    
    object - the element.
    
    Returns:
    
    a list containing the element.
  - singletonMap
```
public static <K,V> Map<K,V> singletonMap(K key,
                                          V value)
```
    Returns a Map containing the specified key and value. The map cannot be modified. The map is serializable.
    
    Parameters:
    
    key - the key.
    
    value - the value.
    
    Returns:
    
    a Map containing the key and value.
  - sort
```
public static <T extends Comparable<? super T>> void sort(List<T> list)
```
    Sorts the specified list in ascending natural order. The algorithm is stable which means equal elements don't get reordered.
    
    Parameters:
    
    list - the list to be sorted.
    
    Throws:
    
    ClassCastException - when an element in the List does not implement Comparable or elements cannot be compared to each other.
  - sort
```
public static <T> void sort(List<T> list,
                            Comparator<? super T> comparator)
```
    Sorts the specified list using the specified comparator. The algorithm is stable which means equal elements don't get reordered.
    
    Parameters:
    
    list - the list to be sorted.
    
    comparator - the comparator.
    
    Throws:
    
    ClassCastException - when elements in the list cannot be compared to each other using the comparator.
  - swap
```
public static void swap(List<?> list,
                        int index1,
                        int index2)
```
    Swaps the elements of list list at indices index1 and index2.
    
    Parameters:
    
    list - the list to manipulate.
    
    index1 - position of the first element to swap with the element in index2.
    
    index2 - position of the other element.
    
    Throws:
    
    IndexOutOfBoundsException - if index1 or index2 is out of range of this list.
    
    Since:
    
    1.4
  - replaceAll
```
public static <T> boolean replaceAll(List<T> list,
                                     T obj,
                                     T obj2)
```
    Replaces all occurrences of Object obj in list with newObj. If the obj is null, then all occurrences of null are replaced with newObj.
    
    Parameters:
    
    list - the list to modify.
    
    obj - the object to find and replace occurrences of.
    
    obj2 - the object to replace all occurrences of obj in list.
    
    Returns:
    
    true, if at least one occurrence of obj has been found in list.
    
    Throws:
    
    UnsupportedOperationException - if the list does not support setting elements.
  - rotate
```
public static void rotate(List<?> lst,
                          int dist)
```
    Rotates the elements in list by the distance dist
    e.g. for a given list with elements [1, 2, 3, 4, 5, 6, 7, 8, 9, 0], calling rotate(list, 3) or rotate(list, -7) would modify the list to look like this: [8, 9, 0, 1, 2, 3, 4, 5, 6, 7]
    
    Parameters:
    
    lst - the list whose elements are to be rotated.
    
    dist - is the distance the list is rotated. This can be any valid integer. Negative values rotate the list backwards.
  - indexOfSubList
```
public static int indexOfSubList(List<?> list,
                                 List<?> sublist)
```
    Searches the list for sublist and returns the beginning index of the first occurrence.
    -1 is returned if the sublist does not exist in list.
    
    Parameters:
    
    list - the List to search sublist in.
    
    sublist - the List to search in list.
    
    Returns:
    
    the beginning index of the first occurrence of sublist in list, or -1.
  - lastIndexOfSubList
```
public static int lastIndexOfSubList(List<?> list,
                                     List<?> sublist)
```
    Searches the list for sublist and returns the beginning index of the last occurrence.
    -1 is returned if the sublist does not exist in list.
    
    Parameters:
    
    list - the list to search sublist in.
    
    sublist - the list to search in list.
    
    Returns:
    
    the beginning index of the last occurrence of sublist in list, or -1.
  - list
```
public static <T> ArrayList<T> list(Enumeration<T> enumeration)
```
    Returns an ArrayList with all the elements in the enumeration. The elements in the returned ArrayList are in the same order as in the enumeration.
    
    Parameters:
    
    enumeration - the source Enumeration.
    
    Returns:
    
    an ArrayList from enumeration.
  - synchronizedCollection
```
public static <T> Collection<T> synchronizedCollection(Collection<T> collection)
```
    Returns a wrapper on the specified collection which synchronizes all access to the collection.
    
    Parameters:
    
    collection - the Collection to wrap in a synchronized collection.
    
    Returns:
    
    a synchronized Collection.
  - synchronizedList
```
public static <T> List<T> synchronizedList(List<T> list)
```
    Returns a wrapper on the specified List which synchronizes all access to the List.
    
    Parameters:
    
    list - the List to wrap in a synchronized list.
    
    Returns:
    
    a synchronized List.
  - synchronizedMap
```
public static <K,V> Map<K,V> synchronizedMap(Map<K,V> map)
```
    Returns a wrapper on the specified map which synchronizes all access to the map.
    
    Parameters:
    
    map - the map to wrap in a synchronized map.
    
    Returns:
    
    a synchronized Map.
  - synchronizedSet
```
public static <E> Set<E> synchronizedSet(Set<E> set)
```
    Returns a wrapper on the specified set which synchronizes all access to the set.
    
    Parameters:
    
    set - the set to wrap in a synchronized set.
    
    Returns:
    
    a synchronized set.
  - synchronizedSortedMap
```
public static <K,V> SortedMap<K,V> synchronizedSortedMap(SortedMap<K,V> map)
```
    Returns a wrapper on the specified sorted map which synchronizes all access to the sorted map.
    
    Parameters:
    
    map - the sorted map to wrap in a synchronized sorted map.
    
    Returns:
    
    a synchronized sorted map.
  - synchronizedSortedSet
```
public static <E> SortedSet<E> synchronizedSortedSet(SortedSet<E> set)
```
    Returns a wrapper on the specified sorted set which synchronizes all access to the sorted set.
    
    Parameters:
    
    set - the sorted set to wrap in a synchronized sorted set.
    
    Returns:
    
    a synchronized sorted set.
  - unmodifiableCollection
```
public static <E> Collection<E> unmodifiableCollection(Collection<? extends E> collection)
```
    Returns a wrapper on the specified collection which throws an UnsupportedOperationException whenever an attempt is made to modify the collection.
    
    Parameters:
    
    collection - the collection to wrap in an unmodifiable collection.
    
    Returns:
    
    an unmodifiable collection.
  - unmodifiableList
```
public static <E> List<E> unmodifiableList(List<? extends E> list)
```
    Returns a wrapper on the specified list which throws an UnsupportedOperationException whenever an attempt is made to modify the list.
    
    Parameters:
    
    list - the list to wrap in an unmodifiable list.
    
    Returns:
    
    an unmodifiable List.
  - unmodifiableMap
```
public static <K,V> Map<K,V> unmodifiableMap(Map<? extends K,? extends V> map)
```
    Returns a wrapper on the specified map which throws an UnsupportedOperationException whenever an attempt is made to modify the map.
    
    Parameters:
    
    map - the map to wrap in an unmodifiable map.
    
    Returns:
    
    a unmodifiable map.
  - unmodifiableSet
```
public static <E> Set<E> unmodifiableSet(Set<? extends E> set)
```
    Returns a wrapper on the specified set which throws an UnsupportedOperationException whenever an attempt is made to modify the set.
    
    Parameters:
    
    set - the set to wrap in an unmodifiable set.
    
    Returns:
    
    a unmodifiable set
  - unmodifiableSortedMap
```
public static <K,V> SortedMap<K,V> unmodifiableSortedMap(SortedMap<K,? extends V> map)
```
    Returns a wrapper on the specified sorted map which throws an UnsupportedOperationException whenever an attempt is made to modify the sorted map.
    
    Parameters:
    
    map - the sorted map to wrap in an unmodifiable sorted map.
    
    Returns:
    
    a unmodifiable sorted map
  - unmodifiableSortedSet
```
public static <E> SortedSet<E> unmodifiableSortedSet(SortedSet<E> set)
```
    Returns a wrapper on the specified sorted set which throws an UnsupportedOperationException whenever an attempt is made to modify the sorted set.
    
    Parameters:
    
    set - the sorted set to wrap in an unmodifiable sorted set.
    
    Returns:
    
    a unmodifiable sorted set.
  - frequency
```
public static int frequency(Collection<?> c,
                            Object o)
```
    Returns the number of elements in the Collection that match the Object passed. If the Object is null, then the number of null elements is returned.
    
    Parameters:
    
    c - the Collection to search.
    
    o - the Object to search for.
    
    Returns:
    
    the number of matching elements.
    
    Throws:
    
    NullPointerException - if the Collection parameter is null.
    
    Since:
    
    1.5
  - emptyList
```
public static final <T> List<T> emptyList()
```
    Returns a type-safe empty, immutable List.
    
    Returns:
    
    an empty List.
    
    Since:
    
    1.5
    
    See Also:
    
    EMPTY_LIST
  - emptySet
```
public static final <T> Set<T> emptySet()
```
    Returns a type-safe empty, immutable Set.
    
    Returns:
    
    an empty Set.
    
    Since:
    
    1.5
    
    See Also:
    
    EMPTY_SET
  - emptyMap
```
public static final <K,V> Map<K,V> emptyMap()
```
    Returns a type-safe empty, immutable Map.
    
    Returns:
    
    an empty Map.
    
    Since:
    
    1.5
    
    See Also:
    
    EMPTY_MAP
  - checkedCollection
```
public static <E> Collection<E> checkedCollection(Collection<E> c,
                                                  Class<E> type)
```
    Returns a dynamically typesafe view of the specified collection. Trying to insert an element of the wrong type into this collection throws a ClassCastException. At creation time the types in c are not checked for correct type.
    
    Parameters:
    
    c - the collection to be wrapped in a typesafe collection.
    
    type - the type of the elements permitted to insert.
    
    Returns:
    
    a typesafe collection.
  - addAll
```
public static <T> boolean addAll(Collection<? super T> c,
                                 T... a)
```
    Adds all the specified elements to the specified collection.
    
    Parameters:
    
    c - the collection the elements are to be inserted into.
    
    a - the elements to insert.
    
    Returns:
    
    true if the collection changed during insertion.
    
    Throws:
    
    UnsupportedOperationException - when the method is not supported.
    
    NullPointerException - when c or a is null, or a contains one or more null elements and c doesn't support null elements.
    
    IllegalArgumentException - if at least one of the elements can't be inserted into the collection.
  - disjoint
```
public static boolean disjoint(Collection<?> c1,
                               Collection<?> c2)
```
    Returns whether the specified collections have no elements in common.
    
    Parameters:
    
    c1 - the first collection.
    
    c2 - the second collection.
    
    Returns:
    
    true if the collections have no elements in common, false otherwise.
    
    Throws:
    
    NullPointerException - if one of the collections is null.
  - newSetFromMap
```
public static <E> Set<E> newSetFromMap(Map<E,Boolean> map)
```
    Answers a set backed by a map. And the map must be empty when this method is called.
    
    Type Parameters:
    
    E - type of elements in set
    
    Parameters:
    
    map - the backing map
    
    Returns:
    
    the set from the map
    
    Throws:
    
    IllegalArgumentException - if the map is not empty
    
    Since:
    
    1.6
  - asLifoQueue
```
public static <T> Queue<T> asLifoQueue(Deque<T> deque)
```
    Answers a LIFO Queue as a view of a Deque. Methods in the returned Queue need to be re-written to implement the LIFO feature.
    
    Type Parameters:
    
    T - type of elements
    
    Parameters:
    
    deque - the Deque
    
    Returns:
    
    the LIFO Queue
    
    Since:
    
    1.6

Class Collections

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

EMPTY_LIST

EMPTY_SET

EMPTY_MAP

Method Detail

binarySearch

binarySearch

copy

enumeration

fill

max

max

min

min

nCopies

reverse

reverseOrder

reverseOrder

shuffle

shuffle

singleton

singletonList

singletonMap

sort

sort

swap

replaceAll

rotate

indexOfSubList

lastIndexOfSubList

list

synchronizedCollection

synchronizedList

synchronizedMap

synchronizedSet

synchronizedSortedMap

synchronizedSortedSet

unmodifiableCollection

unmodifiableList

unmodifiableMap

unmodifiableSet

unmodifiableSortedMap

unmodifiableSortedSet

frequency

emptyList

emptySet

emptyMap

checkedCollection

addAll

disjoint

newSetFromMap

asLifoQueue