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Java Source Code / Java Documentation » Library » Apache commons primitives 1.0 » org.apache.commons.collections.primitives 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.apache.commons.collections.primitives.DoubleListIterator

All known Subclasses:   org.apache.commons.collections.primitives.adapters.ListIteratorDoubleListIterator,  org.apache.commons.collections.primitives.decorators.ProxyDoubleListIterator,
DoubleListIterator
public interface DoubleListIterator extends DoubleIterator(Code)
A bi-directional iterator over double values.
See Also:   org.apache.commons.collections.primitives.adapters.DoubleListIteratorListIterator
See Also:   org.apache.commons.collections.primitives.adapters.ListIteratorDoubleListIterator
since:
   Commons Primitives 1.0
version:
   $Revision: 1.3 $ $Date: 2003/10/16 20:49:36 $
author:
   Rodney Waldhoff




Method Summary
 voidadd(double element)
     Inserts the specified element into my underlying collection (optional operation). The element is inserted immediately before the next element that would have been returned by DoubleListIterator.next , if any, and immediately after the next element that would have been returned by DoubleListIterator.previous , if any.

The new element is inserted immediately before the implied cursor.

 booleanhasNext()
     Returns true iff I have more elements when traversed in the forward direction.
 booleanhasPrevious()
     Returns true iff I have more elements when traversed in the reverse direction.
 doublenext()
     Returns the next element in me when traversed in the forward direction.
 intnextIndex()
     Returns the index of the element that would be returned by a subsequent call to DoubleListIterator.next , or the number of elements in my iteration if I have no next element.
 doubleprevious()
     Returns the next element in me when traversed in the reverse direction.
 intpreviousIndex()
     Returns the index of the element that would be returned by a subsequent call to DoubleListIterator.previous , or -1 if I have no previous element.
 voidremove()
     Removes from my underlying collection the last element returned by DoubleListIterator.next or DoubleListIterator.previous (optional operation).
 voidset(double element)
     Replaces in my underlying collection the last element returned by DoubleListIterator.next or DoubleListIterator.previous with the specified value (optional operation).



Method Detail
add
void add(double element)(Code)
Inserts the specified element into my underlying collection (optional operation). The element is inserted immediately before the next element that would have been returned by DoubleListIterator.next , if any, and immediately after the next element that would have been returned by DoubleListIterator.previous , if any.

The new element is inserted immediately before the implied cursor. A subsequent call to DoubleListIterator.previous will return the added element, a subsequent call to DoubleListIterator.next will be unaffected. This call increases by one the value that would be returned by a call to DoubleListIterator.nextIndex or DoubleListIterator.previousIndex .
Parameters:
  element - the value to be inserted
throws:
  UnsupportedOperationException - when this operation is not supported
throws:
  IllegalArgumentException - if some aspect of the specified element prevents it from being added




hasNext
boolean hasNext()(Code)
Returns true iff I have more elements when traversed in the forward direction. (In other words, returns true iff a call to DoubleListIterator.next will return an element rather than throwing an exception. true iff I have more elements when traversed in the forward direction



hasPrevious
boolean hasPrevious()(Code)
Returns true iff I have more elements when traversed in the reverse direction. (In other words, returns true iff a call to DoubleListIterator.previous will return an element rather than throwing an exception. true iff I have more elements when traversed in the reverse direction



next
double next()(Code)
Returns the next element in me when traversed in the forward direction. the next element in me
throws:
  NoSuchElementException - if there is no next element



nextIndex
int nextIndex()(Code)
Returns the index of the element that would be returned by a subsequent call to DoubleListIterator.next , or the number of elements in my iteration if I have no next element. the index of the next element in me



previous
double previous()(Code)
Returns the next element in me when traversed in the reverse direction. the previous element in me
throws:
  NoSuchElementException - if there is no previous element



previousIndex
int previousIndex()(Code)
Returns the index of the element that would be returned by a subsequent call to DoubleListIterator.previous , or -1 if I have no previous element. the index of the previous element in me



remove
void remove()(Code)
Removes from my underlying collection the last element returned by DoubleListIterator.next or DoubleListIterator.previous (optional operation).
throws:
  UnsupportedOperationException - if this operation is not supported
throws:
  IllegalStateException - if neither DoubleListIterator.next norDoubleListIterator.previous has yet been called, or DoubleListIterator.remove or DoubleListIterator.add has already been called since the last call to DoubleListIterator.next or DoubleListIterator.previous.



set
void set(double element)(Code)
Replaces in my underlying collection the last element returned by DoubleListIterator.next or DoubleListIterator.previous with the specified value (optional operation).
Parameters:
  element - the value to replace the last returned element with
throws:
  UnsupportedOperationException - if this operation is not supported
throws:
  IllegalStateException - if neither DoubleListIterator.next norDoubleListIterator.previous has yet been called, or DoubleListIterator.remove or DoubleListIterator.add has already been called since the last call to DoubleListIterator.next or DoubleListIterator.previous.
throws:
  IllegalArgumentException - if some aspect of the specified element prevents it from being added



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