Apache Tomcat 6.0.39

org.apache.catalina.util
Class Enumerator

java.lang.Object
  extended by org.apache.catalina.util.Enumerator
All Implemented Interfaces:
java.util.Enumeration

public final class Enumerator
extends java.lang.Object
implements java.util.Enumeration

Adapter class that wraps an Enumeration around a Java2 collection classes object Iterator so that existing APIs returning Enumerations can easily run on top of the new collections. Constructors are provided to easliy create such wrappers.

Version:
$Id: Enumerator.java 939353 2010-04-29 15:50:43Z kkolinko $
Author:
Craig R. McClanahan

Constructor Summary
Enumerator(java.util.Collection collection)
          Return an Enumeration over the values of the specified Collection.
Enumerator(java.util.Collection collection, boolean clone)
          Return an Enumeration over the values of the specified Collection.
Enumerator(java.util.Iterator iterator)
          Return an Enumeration over the values returned by the specified Iterator.
Enumerator(java.util.Iterator iterator, boolean clone)
          Return an Enumeration over the values returned by the specified Iterator.
Enumerator(java.util.Map map)
          Return an Enumeration over the values of the specified Map.
Enumerator(java.util.Map map, boolean clone)
          Return an Enumeration over the values of the specified Map.
 
Method Summary
 boolean hasMoreElements()
          Tests if this enumeration contains more elements.
 java.lang.Object nextElement()
          Returns the next element of this enumeration if this enumeration has at least one more element to provide.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Enumerator

public Enumerator(java.util.Collection collection)
Return an Enumeration over the values of the specified Collection.

Parameters:
collection - Collection whose values should be enumerated

Enumerator

public Enumerator(java.util.Collection collection,
                  boolean clone)
Return an Enumeration over the values of the specified Collection.

Parameters:
collection - Collection whose values should be enumerated
clone - true to clone iterator

Enumerator

public Enumerator(java.util.Iterator iterator)
Return an Enumeration over the values returned by the specified Iterator.

Parameters:
iterator - Iterator to be wrapped

Enumerator

public Enumerator(java.util.Iterator iterator,
                  boolean clone)
Return an Enumeration over the values returned by the specified Iterator.

Parameters:
iterator - Iterator to be wrapped
clone - true to clone iterator

Enumerator

public Enumerator(java.util.Map map)
Return an Enumeration over the values of the specified Map.

Parameters:
map - Map whose values should be enumerated

Enumerator

public Enumerator(java.util.Map map,
                  boolean clone)
Return an Enumeration over the values of the specified Map.

Parameters:
map - Map whose values should be enumerated
clone - true to clone iterator
Method Detail

hasMoreElements

public boolean hasMoreElements()
Tests if this enumeration contains more elements.

Specified by:
hasMoreElements in interface java.util.Enumeration
Returns:
true if and only if this enumeration object contains at least one more element to provide, false otherwise

nextElement

public java.lang.Object nextElement()
                             throws java.util.NoSuchElementException
Returns the next element of this enumeration if this enumeration has at least one more element to provide.

Specified by:
nextElement in interface java.util.Enumeration
Returns:
the next element of this enumeration
Throws:
java.util.NoSuchElementException - if no more elements exist

Apache Tomcat 6.0.39

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