Re: Removing object from arraylist when pointed to by iterator

From:

"Mike Schilling" <mscottschilling@hotmail.com>

Newsgroups:

comp.lang.java.programmer

Date:

Sun, 24 Aug 2008 01:12:08 -0700

Message-ID:

<FJ8sk.20141$89.5526@nlpi069.nbdc.sbc.com>

nooneinparticular314159@yahoo.com wrote:

I have an arraylist of objects of a certain type. I use an iterator
on that arraylist to get the next instance of the object, using the
iterator.next() method. But if I succeed in performing an operation
on the object, I want to remove the object from my arraylist. The
question is how I remove it without calling .next() again, since
that
will remove the next one, not the current one? ie. If I am
currently
working on the object at position 4 in the arraylist (through the
iterator), I want to remove the object at position 4. But I don't
know what position the object is in because I got it through the
iterator.

If you call remove() on the iterator, you'll remove the last one
fetched. That is, code like

    ArrayList<MyType> list;
    for (Iterator<MyType> iter = list.iterator(); iter.hasNext(); )
    {
            MyType obj = list.next();
            if (shouldBeRemoved(obj))
                iter.remove();
    }

does what you want.