E
- the type of elements in this bagpublic class HashBag<E> extends AbstractMapBag<E> implements java.io.Serializable
Bag
, using a HashMap
to provide the
data storage. This is the standard implementation of a bag.
A Bag
stores each object in the collection together with a
count of occurrences. Extra methods on the interface allow multiple copies
of an object to be added or removed at once. It is important to read the
interface javadoc carefully as several methods violate the
Collection
interface specification.
AbstractMapBag.BagIterator<E>, AbstractMapBag.MutableInteger
Modifier and Type | Field and Description |
---|---|
private static long |
serialVersionUID
Serial version lock
|
Constructor and Description |
---|
HashBag()
Constructs an empty
HashBag . |
HashBag(java.util.Collection<? extends E> coll)
Constructs a bag containing all the members of the given collection.
|
Modifier and Type | Method and Description |
---|---|
private void |
readObject(java.io.ObjectInputStream in)
Read the bag in using a custom routine.
|
private void |
writeObject(java.io.ObjectOutputStream out)
Write the bag out using a custom routine.
|
add, add, addAll, clear, contains, containsAll, containsAll, doReadObject, doWriteObject, equals, getCount, getMap, hashCode, isEmpty, iterator, remove, remove, removeAll, retainAll, retainAll, size, toArray, toArray, toString, uniqueSet
private static final long serialVersionUID
public HashBag()
HashBag
.public HashBag(java.util.Collection<? extends E> coll)
coll
- a collection to copy into this bagprivate void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException
out
- the output streamjava.io.IOException
- if an error occurs while writing to the streamprivate void readObject(java.io.ObjectInputStream in) throws java.io.IOException, java.lang.ClassNotFoundException
in
- the input streamjava.io.IOException
- if an error occurs while reading from the streamjava.lang.ClassNotFoundException
- if an object read from the stream can not be loaded