Podsumowanie wzorców projektowych GoF

note:// This example shows the Concrete Iterator as an inner class.// The Iterator Pattern in GoF does allow for multiple types of// iterators for a given list or "Aggregate". This could be// accomplished with multiple Iterators in multiple inner classes.// The createIterator class would then have multiple variations.// This, however, assumes that you will have a limited number of// iterator variants - which is normally the case. If you do want// more flexibility in iterator creation, the iterators should not// be in inner classes, and perhaps some sort factory should be// employed to create them.//private class InnerIterator implements DvdListIterator {private int currentPosition = 0;private InnerIterator() {}public void first() {currentPosition = 0;}public void next() {if (currentPosition < (titleCount)) {++currentPosition;}}public boolean isDone() {if (currentPosition >= (titleCount)) {return true;} else {return false;}}}}public String currentItem() {return titles[currentPosition];}DvdListIteratorpackage pk.dydakt.to.dp.b.gof.iterator;public interface DvdListIterator {public void first();public void next();public boolean isDone();public String currentItem();}Wyjcie na konsoli:10 Things I Hate About YouShakespeare In LoveO (2001)American Pie 2Scotland, PA.Hamlet (2000)10 Things I Hate About You66