org.jboss.weld.util.collections
Class ArraySet<E>
java.lang.Object
org.jboss.weld.util.collections.ArraySet<E>
- All Implemented Interfaces:
- Serializable, Iterable<E>, Collection<E>, Set<E>
public class ArraySet<E>
- extends Object
- implements Set<E>, Serializable
A Set
which is backed by a simple array of elements. This provides
all the behaviors of a set backed by an array, thus insert and remove
operations are always O(n) time to check for uniqueness. This should only be
used for sets which are known to be mostly empty or to contain only a handful
of elements.
The primary use of this set is for those cases where small sets exists and
will not be changed. The savings in memory is significant compared to hash
sets which may contain many empty buckets.
- Author:
- David Allen
- See Also:
- Serialized Form
ArraySet
public ArraySet(ArrayList<E> initialList)
ArraySet
public ArraySet(Collection<E> initialElements)
ArraySet
public ArraySet(int size)
ArraySet
public ArraySet()
add
public boolean add(E e)
- Specified by:
add
in interface Collection<E>
- Specified by:
add
in interface Set<E>
addAll
public boolean addAll(Collection<? extends E> otherCollection)
- Specified by:
addAll
in interface Collection<E>
- Specified by:
addAll
in interface Set<E>
asList
public List<E> asList()
clear
public void clear()
- Specified by:
clear
in interface Collection<E>
- Specified by:
clear
in interface Set<E>
contains
public boolean contains(Object o)
- Specified by:
contains
in interface Collection<E>
- Specified by:
contains
in interface Set<E>
containsAll
public boolean containsAll(Collection<?> c)
- Specified by:
containsAll
in interface Collection<E>
- Specified by:
containsAll
in interface Set<E>
isEmpty
public boolean isEmpty()
- Specified by:
isEmpty
in interface Collection<E>
- Specified by:
isEmpty
in interface Set<E>
iterator
public Iterator<E> iterator()
- Specified by:
iterator
in interface Iterable<E>
- Specified by:
iterator
in interface Collection<E>
- Specified by:
iterator
in interface Set<E>
remove
public boolean remove(Object o)
- Specified by:
remove
in interface Collection<E>
- Specified by:
remove
in interface Set<E>
removeAll
public boolean removeAll(Collection<?> c)
- Specified by:
removeAll
in interface Collection<E>
- Specified by:
removeAll
in interface Set<E>
retainAll
public boolean retainAll(Collection<?> c)
- Specified by:
retainAll
in interface Collection<E>
- Specified by:
retainAll
in interface Set<E>
size
public int size()
- Specified by:
size
in interface Collection<E>
- Specified by:
size
in interface Set<E>
toArray
public Object[] toArray()
- Specified by:
toArray
in interface Collection<E>
- Specified by:
toArray
in interface Set<E>
toArray
public <T> T[] toArray(T[] a)
- Specified by:
toArray
in interface Collection<E>
- Specified by:
toArray
in interface Set<E>
trimToSize
public ArraySet<E> trimToSize()
equals
public boolean equals(Object obj)
- Specified by:
equals
in interface Collection<E>
- Specified by:
equals
in interface Set<E>
- Overrides:
equals
in class Object
hashCode
public int hashCode()
- Specified by:
hashCode
in interface Collection<E>
- Specified by:
hashCode
in interface Set<E>
- Overrides:
hashCode
in class Object
toString
public String toString()
- Overrides:
toString
in class Object
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