oracle.soap.providers.sp
Class Hashset

java.lang.Object
  |
  +--oracle.soap.providers.sp.Hashset

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable

public final class Hashset

extends java.lang.Object

implements java.lang.Cloneable, java.io.Serializable

Hashset is a simple set container built on top of Hashtable. Its is indexed by a key which should satisfy all the requirements for Hashtable keys.

Hashset internally uses a Hashtable to store items. All methods of the class are indirectly synchronized and, hence, multi-thread safe.

See Also:

Serialized Form

Hashset

public Hashset()

Construct an empty set.

Hashset

public Hashset(Hashset s)

Create a copy of an existing set. The internal table is cloned. If the provided set is null, construct an empty set.

Parameters:

s - the set to create copy from.

clone

public java.lang.Object clone()

Clone the hash set (by invoking the copy constructor).

Overrides:

clone in class java.lang.Object

size

public int size()

Return the size of the set.

Returns:

the number of elements in the set.

isEmpty

public boolean isEmpty()

Check if the set is empty.

Returns:

true iff the set if empty.

elements

public java.util.Enumeration elements()

Return an enumeration of the elements in the set.

Returns:

the elements in the set as an enumeration.

contains

public boolean contains(java.lang.Object v)

Check if the set contains the specified element.

Returns:

true iff the item is in the set.

Throws:

java.lang.NullPointerException - if the item is null.

put

public void put(java.lang.Object v)

Add the given element to the set.

Parameters:

v - the item to add to the set.

Throws:

java.lang.NullPointerException - if the item is null.

remove

public void remove(java.lang.Object v)

Remove the item from the set.

Parameters:

v - the item to add to the set.

Throws:

java.lang.NullPointerException - if the item is null.

clear

public void clear()

Clear the set.

getAny

public java.lang.Object getAny()

Get a random element in the set. The element returned is not quite random; it is the first element in the internal enumeration generated for this set.

If the set is empty, a null is returned.

Returns:

any element in the set, or null if the set is empty.