J2EE-ACADEMY

An  Iterator  is an object that enables you to navigate through a collection and to remove elements from the collection selectively, if desired. You get an Iterator for a collection by calling its iterator method. The following is the Iterator interface . public interface Iterator<E> {     boolean hasNext();     E next();     void remove(); //optional } The  hasNext()  method returns  true  if the iteration has more elements, and the  next()  method returns the next element in the iteration.   The  remove()  method removes the last element that was returned by  next  from the underlying  Collection . The  remove  method may be called only once per call to  next  and throws an exception if this rule is violated. [ Note :  Iterator.remove  is the  only  safe way to modify a...