| java.util.HashSet
| HashSet | | public class HashSet extends AbstractSet implements Set<E>,Cloneable,Serializable(Code) | | HashSet is an implementation of Set. All optional operations are supported,
adding and removing. The elements can be any objects.
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| Constructor Summary | |
| public | HashSet()
Constructs a new empty instance of HashSet. | | public | HashSet(int capacity)
Constructs a new instance of HashSet with the specified capacity. | | public | HashSet(int capacity, float loadFactor)
Constructs a new instance of HashSet with the specified capacity and load
factor. | | public | HashSet(Collection<? extends E> collection)
Constructs a new instance of HashSet containing the unique elements in
the specified collection. | | | HashSet(HashMap<E, HashSet<E>> backingMap)
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| Method Summary | |
| public boolean | add(E object)
Adds the specified object to this HashSet. | | public void | clear()
Removes all elements from this HashSet, leaving it empty. | | public Object | clone()
Answers a new HashSet with the same elements and size as this HashSet. | | public boolean | contains(Object object)
Searches this HashSet for the specified object. | | HashMap<E, HashSet<E>> | createBackingMap(int capacity, float loadFactor)
| | public boolean | isEmpty()
Answers if this HashSet has no elements, a size of zero. | | public Iterator<E> | iterator()
Answers an Iterator on the elements of this HashSet. | | public boolean | remove(Object object)
Removes an occurrence of the specified object from this HashSet. | | public int | size()
Answers the number of elements in this HashSet. |
| HashSet | | public HashSet()(Code) | | Constructs a new empty instance of HashSet.
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| HashSet | | public HashSet(int capacity)(Code) | | Constructs a new instance of HashSet with the specified capacity.
Parameters:
capacity - the initial capacity of this HashSet |
| HashSet | | public HashSet(int capacity, float loadFactor)(Code) | | Constructs a new instance of HashSet with the specified capacity and load
factor.
Parameters:
capacity - the initial capacity
Parameters:
loadFactor - the initial load factor |
| HashSet | | public HashSet(Collection<? extends E> collection)(Code) | | Constructs a new instance of HashSet containing the unique elements in
the specified collection.
Parameters:
collection - the collection of elements to add |
| add | | public boolean add(E object)(Code) | | Adds the specified object to this HashSet.
Parameters:
object - the object to add true when this HashSet did not already contain the object, falseotherwise |
| clone | | public Object clone()(Code) | | Answers a new HashSet with the same elements and size as this HashSet.
a shallow copy of this HashSet
See Also: java.lang.Cloneable |
| contains | | public boolean contains(Object object)(Code) | | Searches this HashSet for the specified object.
Parameters:
object - the object to search for true if object is an element of this HashSet,false otherwise |
| isEmpty | | public boolean isEmpty()(Code) | | Answers if this HashSet has no elements, a size of zero.
true if this HashSet has no elements, false otherwise
See Also: HashSet.size |
| iterator | | public Iterator<E> iterator()(Code) | | Answers an Iterator on the elements of this HashSet.
an Iterator on the elements of this HashSet
See Also: Iterator |
| remove | | public boolean remove(Object object)(Code) | | Removes an occurrence of the specified object from this HashSet.
Parameters:
object - the object to remove true if this HashSet is modified, false otherwise |
| size | | public int size()(Code) | | Answers the number of elements in this HashSet.
the number of elements in this HashSet |
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