This method returns a list iterator over the elements of a
Vector object in proper sequence. It is bidirectional, so both forward and backward traversal is possible, using
next() and
previous() respectively. The iterator thus returned is
fail-fast. This means that structurally modifying the vector after the iterator is created, in any way except through the
iterator's own remove or add methods (using
Vector.add(), for example), will cause iterator to throw
ConcurrentModificationException.
Syntax:
public ListIterator listIterator()
Parameters: This method accepts no input arguments.
Return Value: This method returns a
ListIterator object which can be used to traverse the Vector object.
Example 1: To demonstrate forward and backward traversal using listIterator().
Output:
Forward Traversal:
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Backward Traversal:
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This method is used to return a list iterator by specifying starting index. Also bidirectional and fail-fast.
Syntax:
public ListIterator listIterator(int index)
Parameters: The parameter index is an integer type value that specifies the first element to be returned from the list iterator (by a call to
next()).
Return Value: This method returns a
ListIterator object which can be used to traverse the Vector object.
Exception: This method throws
IndexOutOfBoundsException, if the index is out of range (index < 0 or index > size())
Example 2: To demonstrate listIterator(int index).
Example 3: To demonstrate
IndexOutOfBoundsException thrown by listIterator(int index).
Output:
Exception: java.lang.IndexOutOfBoundsException: Index: 5
Example 4: To demonstrate
ConcurrentModificationException thrown by ListIterator object when Vector object is modified after creating list iterator to it.
