org.zkoss.util
Class IdentityHashSet<T>

java.lang.Object
  extended by java.util.AbstractCollection<E>
      extended by java.util.AbstractSet<T>
          extended by org.zkoss.util.IdentityHashSet<T>
All Implemented Interfaces:
java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<T>, java.util.Collection<T>, java.util.Set<T>

public class IdentityHashSet<T>
extends java.util.AbstractSet<T>
implements java.util.Set<T>, java.lang.Cloneable, java.io.Serializable

Like java.util.InternalHashMap, it uses == and System.identityHashCode for doing HashSet.

Author:
tomyeh
See Also:
IdentityComparator, Serialized Form

Constructor Summary
IdentityHashSet()
          Constructs a new, empty set; the backing IdentityHashMap instance has default capacity (32).
IdentityHashSet(java.util.Collection<T> c)
          Constructs a new set containing the elements in the specified collection.
IdentityHashSet(int expectedMaxSize)
          Constructs a new, empty set with the specified expected maximum size.
 
Method Summary
 boolean add(T o)
           
 void clear()
           
 java.lang.Object clone()
           
 boolean contains(java.lang.Object o)
           
 boolean isEmpty()
           
 java.util.Iterator<T> iterator()
           
 boolean remove(java.lang.Object o)
           
 int size()
           
 
Methods inherited from class java.util.AbstractSet
equals, hashCode, removeAll
 
Methods inherited from class java.util.AbstractCollection
addAll, containsAll, retainAll, toArray, toArray, toString
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface java.util.Set
addAll, containsAll, equals, hashCode, removeAll, retainAll, toArray, toArray
 

Constructor Detail

IdentityHashSet

public IdentityHashSet()
Constructs a new, empty set; the backing IdentityHashMap instance has default capacity (32).


IdentityHashSet

public IdentityHashSet(java.util.Collection<T> c)
Constructs a new set containing the elements in the specified collection.

Parameters:
c - the collection whose elements are to be placed into this set.
Throws:
java.lang.NullPointerException - if the specified collection is null.

IdentityHashSet

public IdentityHashSet(int expectedMaxSize)
Constructs a new, empty set with the specified expected maximum size.

Parameters:
expectedMaxSize - the expected maximum size of the map.
Throws:
java.lang.IllegalArgumentException - if expectedMaxSize is negative
Method Detail

iterator

public java.util.Iterator<T> iterator()
Specified by:
iterator in interface java.lang.Iterable<T>
Specified by:
iterator in interface java.util.Collection<T>
Specified by:
iterator in interface java.util.Set<T>
Specified by:
iterator in class java.util.AbstractCollection<T>

size

public int size()
Specified by:
size in interface java.util.Collection<T>
Specified by:
size in interface java.util.Set<T>
Specified by:
size in class java.util.AbstractCollection<T>

isEmpty

public boolean isEmpty()
Specified by:
isEmpty in interface java.util.Collection<T>
Specified by:
isEmpty in interface java.util.Set<T>
Overrides:
isEmpty in class java.util.AbstractCollection<T>

contains

public boolean contains(java.lang.Object o)
Specified by:
contains in interface java.util.Collection<T>
Specified by:
contains in interface java.util.Set<T>
Overrides:
contains in class java.util.AbstractCollection<T>

add

public boolean add(T o)
Specified by:
add in interface java.util.Collection<T>
Specified by:
add in interface java.util.Set<T>
Overrides:
add in class java.util.AbstractCollection<T>

remove

public boolean remove(java.lang.Object o)
Specified by:
remove in interface java.util.Collection<T>
Specified by:
remove in interface java.util.Set<T>
Overrides:
remove in class java.util.AbstractCollection<T>

clear

public void clear()
Specified by:
clear in interface java.util.Collection<T>
Specified by:
clear in interface java.util.Set<T>
Overrides:
clear in class java.util.AbstractCollection<T>

clone

public java.lang.Object clone()
Overrides:
clone in class java.lang.Object


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