[jdom-interest] detach() from element

[jmt]

Why dont you use ListIterator ?
This iterator is useful when deleting elements from a list !

On Wednesday 23 March 2005 15:21, Bill Leng wrote:
> you should loop backward, something like
> int n = my_lists.size();
> for(int i = n-1; i >= 0; i--)
> {
> ...
> }
>
> Bradley S. Huffman wrote:
> >kandryc at miser.umass.edu writes:
> >>I have an XML file structured something like the following:
> >>
> >><my-lists>
> >>   <list refid="1" date="3/22/2005 4:09 PM" />
> >>   <list refid="1" date="3/22/2005 4:14 PM" />
> >>   <list refid="1" date="3/22/2005 5:19 PM" />
> >>   <list refid="1" date="3/22/2005 6:01 PM" />
> >>   <list refid="2" date="3/22/2005 6:23 PM" />
> >></my-lists>
> >>
> >>However, when I execute the following code:
> >>
> >>List my_lists = theDocument.getRootElement().getChildren();
> >>for (int i = 0; i < my_lists.size(); i++) {
> >>   Element next = (Element)my)lists.get(i);
> >>      if (next.getAttribute("refid").getValue().equals("1")) {
> >>         next.detach();
> >>      }
> >>}
> >>
> >>The output XML is:
> >>
> >><my-lists>
> >>   <list refid="1" date="3/22/2005 4:14 PM" />
> >>   <list refid="1" date="3/22/2005 6:01 PM" />
> >>   <list refid="2" date="3/22/2005 6:23 PM" />
> >></my-lists>
> >>
> >>Why are not all the elements with refid="1" not detached?
> >
> >Because when you remove a item from a list, all items following it
> >are shifted. For example if when i == 3 the if statement is true,
> >the 3rd element is removed and the old 4th element becomes the new
> >3rd, the old 5th becomes the new 4th, etc, etc. Then the loop ends
> >and i is incremented to 4, leaving what was the old 4th element untouched.
> >
> >Brad
> >_______________________________________________
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