Lecture 13
5
• while ( keysIterator.hasNext() ) {
•    String key = (String)keysIterator.next(); •    terminal.println( " … " + (Integer)map.get( key)) );
•}
•hasNext() returns false when at end of list
•next() returns a reference to the next Object in the list
•Iterator next method, like TreeMap get method, returns just an Object. Need two casts.
Using an Iterator