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JavaTM 2 Platform Std. Ed. v1.3 |
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An iterator for lists that allows the programmer to traverse the list in either direction and modify the list during iteration.
Collection,
List,
Iterator,
Enumeration| Method Summary | |
void |
add(Object o)
Inserts the specified element into the list (optional operation). |
boolean |
hasNext()
Returns true if this list iterator has more elements when traversing the list in the forward direction. |
boolean |
hasPrevious()
Returns true if this list iterator has more elements when traversing the list in the reverse direction. |
Object |
next()
Returns the next element in the list. |
int |
nextIndex()
Returns the index of the element that would be returned by a subsequent call to next. |
Object |
previous()
Returns the previous element in the list. |
int |
previousIndex()
Returns the index of the element that would be returned by a subsequent call to previous. |
void |
remove()
Removes from the list the last element that was returned by next or previous (optional operation). |
void |
set(Object o)
Replaces the last element returned by next or previous with the specified element (optional operation). |
| Method Detail |
public boolean hasNext()
hasNext in interface Iteratorpublic Object next()
next in interface IteratorNoSuchElementException - if the iteration has no next element.public boolean hasPrevious()
public Object previous()
NoSuchElementException - if the iteration has no previous
element.public int nextIndex()
public int previousIndex()
public void remove()
remove in interface IteratorUnsupportedOperationException - if the remove
operation is not supported by this list iterator.IllegalStateException - neither next nor
previous have been called, or remove or
add have been called after the last call to *
next or previous.public void set(Object o)
o - the element with which to replace the last element returned by
next or previous.UnsupportedOperationException - if the set operation
is not supported by this list iterator.ClassCastException - if the class of the specified element
prevents it from being added to this list.IllegalArgumentException - if some aspect of the specified
element prevents it from being added to this list.IllegalStateException - if neither next nor
previous have been called, or remove or
add have been called after the last call to
next or previous.public void add(Object o)
o - the element to insert.UnsupportedOperationException - if the add method is
not supported by this list iterator.ClassCastException - if the class of the specified element
prevents it from being added to this Set.IllegalArgumentException - if some aspect of this element
prevents it from being added to this Collection.
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JavaTM 2 Platform Std. Ed. v1.3 |
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