net.sf.eos.trie
Class EmptyIterator

java.lang.Object
  net.sf.eos.trie.UnmodifiableIterator
      net.sf.eos.trie.EmptyIterator

All Implemented Interfaces:

Iterator

public class EmptyIterator
extends UnmodifiableIterator

Provides an unmodifiable empty iterator. EmptyIterator always returns that there aren't any more items and throws a NoSuchElementException when attempting to move to the next item.

    try{
        EmptyIterator ei = new EmptyIterator();     
        ei.next();      
    } catch (Exception e) {
        System.out.println("Expected to get NoSuchElementException exception: " + e.toString());
    }

    Output:
        Expected to get NoSuchElementException exception: java.util.NoSuchElementException
 

Field Summary

static Iterator

EMPTY_ITERATOR A constant EmptyIterator.

Constructor Summary

EmptyIterator()

Method Summary

static <T> Iterator<T>	emptyIterator()
boolean	hasNext()
Object	next()

Methods inherited from class net.sf.eos.trie.UnmodifiableIterator

remove

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EMPTY_ITERATOR

public static final Iterator EMPTY_ITERATOR

A constant EmptyIterator.

Constructor Detail

EmptyIterator

public EmptyIterator()

Method Detail

emptyIterator

public static <T> Iterator<T> emptyIterator()

hasNext

public boolean hasNext()

next

public Object next()