The right way to remove elements from a collection while iterating

is by using ListIterator.remove() method.

E.g.

ListIterator iter = myList.iterator();

while(iter.hasNext()) {

itr.remove();

}

Some developers use following code to remove an element which is

incorrect:

Iterator iter = myList.iterator();

while(iter.hasNext()) {

itr.remove();

}

By doing so we get ConcurrentModificationException.

An iterator is first created to traverse the list. But at the same time

the list is changed by remove() method.

In Java, it is not allowed for a thread to modify a collection while

another thread is iterating it. ListIterator provides the capability of

removing an object during traversa