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com.ideanest.util
Class CountingBag

java.lang.Object
  |
  +--java.util.AbstractCollection
        |
        +--com.ideanest.util.CountingBag
All Implemented Interfaces:
java.lang.Cloneable, java.util.Collection, java.io.Serializable
public class CountingBag
extends java.util.AbstractCollection
implements java.lang.Cloneable, java.io.Serializable

A bag implemented using a map of elements to quantities. If multiple equal objects are added, any one instance will be retained; the rest will be merely counted. When iterating, the instance retained will be returned multiple times, according to the count.

Version:
1.1, 2002-03-10
Author:
Piotr Kaminski (piotr@ideanest.com)
See Also:
Serialized Form

Constructor Summary
CountingBag()
           
CountingBag(java.util.Collection c)
           
CountingBag(java.util.Map base)
           
 
Method Summary
 boolean add(java.lang.Object o)
           
 boolean add(java.lang.Object o, int n)
           
 void clear()
           
 java.lang.Object clone()
           
 boolean contains(java.lang.Object o)
           
 int count(java.lang.Object o)
           
 java.util.Iterator iterator()
           
 boolean remove(java.lang.Object o)
           
 int remove(java.lang.Object o, int n)
           
 boolean removeAll(java.util.Collection c)
           
 boolean retainAll(java.util.Collection c)
           
 int size()
           
 java.util.Set toSet()
           
 
Methods inherited from class java.util.AbstractCollection
addAll, containsAll, isEmpty, toArray, toArray, toString
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface java.util.Collection
equals, hashCode
 

Constructor Detail

CountingBag

public CountingBag()

CountingBag

public CountingBag(java.util.Collection c)

CountingBag

public CountingBag(java.util.Map base)
Method Detail

add

public boolean add(java.lang.Object o)
Specified by:
add in interface java.util.Collection
Overrides:
add in class java.util.AbstractCollection

add

public boolean add(java.lang.Object o,
                   int n)

clear

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

clone

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

contains

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

count

public int count(java.lang.Object o)

iterator

public java.util.Iterator iterator()
Specified by:
iterator in interface java.util.Collection
Specified by:
iterator in class java.util.AbstractCollection

remove

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

remove

public int remove(java.lang.Object o,
                  int n)

removeAll

public boolean removeAll(java.util.Collection c)
Specified by:
removeAll in interface java.util.Collection
Overrides:
removeAll in class java.util.AbstractCollection

retainAll

public boolean retainAll(java.util.Collection c)
Specified by:
retainAll in interface java.util.Collection
Overrides:
retainAll in class java.util.AbstractCollection

size

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

toSet

public java.util.Set toSet()
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