java.lang.Object | +--java.util.Dictionary | +--java.util.Hashtable | +--com.ibm.commerce.tools.util.OrderedHashtable
Implements a hashtable which preserves the order.
Field Summary | |
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static java.lang.String |
COPYRIGHT The IBM copyright notice field. |
Constructor Summary | |
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OrderedHashtable() Constructs a new, empty hashtable with a default initial capacity (11) and load factor, which is 0.75. | |
OrderedHashtable(int initialCapacity) Constructs a new, empty hashtable with the specified initial capacity and default load factor, which is 0.75. | |
OrderedHashtable(int initialCapacity, float loadFactor) Constructs a new, empty hashtable with the specified initial capacity and the specified load factor. | |
OrderedHashtable(java.util.Map t) Constructs a new hashtable with the same mappings as the given Map. |
Method Summary | |
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java.util.Enumeration |
keys() Returns an enumeration of the keys in this hashtable in the order in which the elements are inserted. |
java.lang.Object |
put(java.lang.Object key, java.lang.Object value) Maps the specified key to the specified value in this hashtable with its order preserved. |
java.lang.Object |
remove(java.lang.Object key) Removes the key (and its corresponding value) from this hashtable. |
Methods inherited from class java.util.Hashtable |
clear, clone, contains, containsKey, containsValue, elements,
entrySet, equals, get, hashCode, isEmpty, keySet, putAll, rehash, size,
toString, values |
Methods inherited from class java.lang.Object |
finalize, getClass, notify, notifyAll, wait, wait,
wait |
Field Detail |
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public static final java.lang.String COPYRIGHT
Constructor Detail |
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public OrderedHashtable()
public OrderedHashtable(int initialCapacity)
initialCapacity
- the initial capcity of the
hashtablepublic OrderedHashtable(int initialCapacity, float loadFactor)
initialCapacity
- the initial capacity of the hashtabledloadFactor
- the load factor of the hashtablepublic OrderedHashtable(java.util.Map t)
t
- the map whose mappings are the to be placed in this
mapMethod Detail |
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public java.util.Enumeration keys()
keys
in class java.util.Hashtable
public java.lang.Object put(java.lang.Object key, java.lang.Object value)
put
in interface java.util.Map
put
in class java.util.Hashtable
key
- the hashtable keyvalue
- the valuenull
if it does not have a value.public java.lang.Object remove(java.lang.Object key)
remove
in interface java.util.Map
remove
in class
java.util.Hashtable
key
- the key that needs to be removednull
if the key does not have a mapping.