Collections

Description

Collections functions

Categories

NameDescription
ComparatorComparator functions
IteratorUtility Functions for Java.util.Iterator
ListUtility Functions for java.util.List
MapMap functions
SetUtility functions Java.util.Set
SortedMapSortedMap functions
SortedSetSortedSet functions

Functions

NameSignature and Synopsis
addvoid add ( Object collection, Object element)
Inserts the specified element at the specified position in this collection.
addAllboolean addAll ( Object collection, Object collection2 )
Inserts all of the elements in the specified collection into this collection at the specified position.
clearvoid clear ( Object collection )
Removes all of the elements from this collection.
containsboolean contains ( Object collection, Object element )
Returns true if this collection contains the specified element.
containsAllboolean containsAll ( Object collection, Object collection2 )
Returns true if this collection contains all of the elements of the specified collection.
iteratorObject iterator ( Object collection )
Returns an iterator over the elements in this collection in proper sequence.
removeboolean remove ( Object collection, Object element )
Removes the first occurrence of the specified element from this collection, if it is present.
removeAllboolean removeAll ( Object collection, Object collection2 )
Removes from this collection all of its elements that are contained in the specified collection.
retainAllboolean retainAll ( Object collection, Object collection2 )
Retains only the elements in this collection that are contained in the specified collection.
sizeint size ( Object collection )
Returns the number of elements in this collection.
toArray[Object[] toArray ( Object collection )
Returns an array containing all of the elements in this collection in proper sequence (from first to last element).