Learn the difference between classes and interfaces once and for all, then get started declaring, implementing, and extending interfaces in your Java programs ...

All the classes released in Java 2 that implement the collection interface contain an iterator () method, which returns an instance of the Iterator. There's nearly universal support for the Iterator ...

Java's interface language feature often puzzles newcomers to this language. Jeff eliminates this mystery by presenting the six roles that interfaces play in the Java language.

(b) Iterating IntBags The Java API includes an interface called Iterator that is designed to retrieve each of the objects from a set of objects, once and once only.

Filtering Iterator nuts and bolts As the filtering Iterator implements the java.util.Iterator interface, it must provide implementations for the methods defined within that interface.

Since the BufferedIterator is an iterator, it implements the java.util.Iterator interface and honors the contracts laid down in that class’s javadoc.

Anyway- its an implementation of a Trie following these interfaces.. It seems to work okay, but I'm not sure how to go about coding the iterator..

Given an Iterator class interface with methods: next () and hasNext (), design and implement a PeekingIterator that support the peek () operation -- it essentially peek () at the element that will be ...