java.util
Class WeakHashMap.KeyIterator

java.lang.Object
  java.util.WeakHashMap.HashIterator
      java.util.WeakHashMap.KeyIterator

All Implemented Interfaces:

Iterator

Enclosing class:

WeakHashMap

private class WeakHashMap.KeyIterator

extends WeakHashMap.HashIterator

Field Summary

(package private) Object	currentKey Strong reference needed to avoid disappearance of key between nextEntry() and any use of the entry
(package private) WeakHashMap.Entry	entry
(package private) int	expectedModCount
(package private) int	index
(package private) WeakHashMap.Entry	lastReturned
(package private) Object	nextKey Strong reference needed to avoid disappearance of key between hasNext and next

Constructor Summary

private

WeakHashMap.KeyIterator()

Method Summary

boolean	hasNext() Returns true if the iteration has more elements.
Object	next() Returns the next element in the iteration.
protected WeakHashMap.Entry	nextEntry() The common parts of next() across different types of iterators
void	remove() Removes from the underlying collection the last element returned by the iterator (optional operation).

Methods inherited from class java.lang.Object

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

Field Detail

index

int index

entry

WeakHashMap.Entry entry

lastReturned

WeakHashMap.Entry lastReturned

expectedModCount

int expectedModCount

nextKey

Object nextKey

Strong reference needed to avoid disappearance of key between hasNext and next

currentKey

Object currentKey

Strong reference needed to avoid disappearance of key between nextEntry() and any use of the entry

Constructor Detail

WeakHashMap.KeyIterator

private WeakHashMap.KeyIterator()

Method Detail

next

public Object next()

Description copied from interface: Iterator

Returns the next element in the iteration.

Returns:

the next element in the iteration.

hasNext

public boolean hasNext()

Description copied from interface: Iterator

Returns true if the iteration has more elements. (In other words, returns true if next would return an element rather than throwing an exception.)

Specified by:

hasNext in interface Iterator

Returns:

true if the iterator has more elements.

nextEntry

protected WeakHashMap.Entry nextEntry()

The common parts of next() across different types of iterators

remove

public void remove()

Description copied from interface: Iterator

Removes from the underlying collection the last element returned by the iterator (optional operation). This method can be called only once per call to next. The behavior of an iterator is unspecified if the underlying collection is modified while the iteration is in progress in any way other than by calling this method.

Specified by:

remove in interface Iterator