Hashtable.KeyIterator

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java.util
Class Hashtable.KeyIterator

java.lang.Object
  java.util.Hashtable.EntryIterator
      java.util.Hashtable.KeyIterator

All Implemented Interfaces:: Iterator

Enclosing class:: Hashtable

private class Hashtable.KeyIterator
extends Hashtable.EntryIterator

A class which implements the Iterator interface and is used for iterating over keys in Hashtables.

Field Summary

(package private) int count
          The number of elements remaining to be returned by next().

(package private) int idx
          Current index in the physical hash table.

(package private) int knownMod
          The number of modifications to the backing Hashtable that we know about.

(package private) Hashtable.HashEntry last
          The last Entry returned by a next() call.

(package private) Hashtable.HashEntry next
          The next entry that should be returned by next().

Constructor Summary

private Hashtable.KeyIterator()


Method Summary

boolean hasNext()
          Returns true if the Iterator has more elements.

java.lang.Object next()
          Returns the next element in the Iterator's sequential view.

void remove()
          Removes from the backing Hashtable the last element which was fetched with the next() method.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

knownMod

int knownMod

The number of modifications to the backing Hashtable that we know about.

count

int count

The number of elements remaining to be returned by next().

idx

int idx

Current index in the physical hash table.

last

Hashtable.HashEntry last

The last Entry returned by a next() call.

Hashtable.HashEntry next

The next entry that should be returned by next(). It is set to something if we're iterating through a bucket that contains multiple linked entries. It is null if next() needs to find a new bucket.

Constructor Detail