Question

I have a list I need to iterate over and delete certain items. I can’t use an iterator because I need to call methods for each item (such as ls.getStatus()) which doesn’t work with an iterator. If ls.getStatus() == 0 I need to delete that item. How can I avoid the ConcurrentModificationException?

for (MyList ls : list) {
    if (ls.getStatus() == 0) {
        ls.run();
        list.remove();
    } else {
        ls.create();
    }
}

Thanks

Answer 1

Why don’t you think you can use an iterator?

Iterator<MyList> i = list.iterator();
while (i.hasNext()) {
    MyList ls = i.next();

    //... all your other code which uses ls...

    i.remove();
}

This approach is also likely to be faster, since using iterator.remove() avoids having to search for the item in the list which is necessary with list.remove(item).