public class Lister<E>
extends java.lang.Object
implements java.util.Iterator<E>
Lister implements Java's Iterator<E>
interface for a linked list made from Node<E> nodes.
Note that this implementation of an Iterator<E> does not
support the remove method. Any activation of remove
results in an
UnsupportedOperationException.
Java Source Code for this class:
http://www.cs.colorado.edu/~main/edu/colorado/nodes/Lister.java Node| Constructor and Description |
|---|
Lister(Node<E> head)
Initialize a Lister with a specified linked list.
|
| Modifier and Type | Method and Description |
|---|---|
boolean |
hasNext()
Determine whether there are any more elements in this Lister.
|
E |
next()
Retrieve the next element of this
Lister. |
void |
remove() |
public Lister(Node<E> head)
head - a head reference for a linked list of objects
Postcondition:
Subsequent activations of next will return the elements
from this linked list, one after another. If the linked list changes
in any way before all the elements have been returned, then the
subsequent behavior of this Lister is unspecified.public boolean hasNext()
hasNext in interface java.util.Iterator<E>true if there are more elements in this
Lister; false otherwise.public E next()
Lister.
a bag whose contents will be added to this bag
Precondition:
hasMoreElements() must be true.next in interface java.util.Iterator<E>Lister.
Note that each element is only returned once, and then the
Lister automatically advances to the next element.java.util.NoSuchElementException - Indicates that hasMoreElements() is false.public void remove()
remove in interface java.util.Iterator<E>