structure
Class QueueList

java.lang.Object
  structure.AbstractStructure
      structure.AbstractLinear
          structure.AbstractQueue
              structure.QueueList

All Implemented Interfaces:

Linear, Queue, Structure

public class QueueList
extends AbstractQueue
implements Queue

An implementation of queues based on lists.

Constructor Summary

QueueList()
Construct a new queue with no data.

Method Summary

void	add(Object value) Add a value to the tail of the queue.
void	clear() Remove all the values from the queue.
Object	get() Fetch the value at the head of the queue.
boolean	isEmpty() Determine if the queue is empty.
Iterator	iterator() Returns an iterator for traversing the structure.
Object	remove() Remove a value from the head of the queue.
int	size() Determine the number of elements within the queue.
String	toString() Construct a string representation of the queue.

Methods inherited from class structure.AbstractQueue

dequeue, enqueue, getFirst, peek

Methods inherited from class structure.AbstractLinear

empty, remove

Methods inherited from class structure.AbstractStructure

contains, elements, hashCode, values

Methods inherited from class java.lang.Object

equals, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface structure.Queue

dequeue, empty, enqueue, getFirst, peek

Methods inherited from interface structure.Structure

contains, elements, remove, values

Constructor Detail

QueueList

public QueueList()

Construct a new queue with no data.

Method Detail

add

public void add(Object value)

Add a value to the tail of the queue.

Specified by:

add in interface Linear

Specified by:

add in interface Queue

Specified by:

add in interface Structure

Parameters:

value - The value added.

See Also:

AbstractQueue.enqueue(java.lang.Object)

remove

public Object remove()

Remove a value from the head of the queue.

Specified by:

remove in interface Linear

Specified by:

remove in interface Queue

Returns:

The value actually removed.

See Also:

AbstractQueue.dequeue()

get

public Object get()

Fetch the value at the head of the queue.

Specified by:

get in interface Linear

Specified by:

get in interface Queue

Returns:

Reference to the first value of the queue.

size

public int size()

Determine the number of elements within the queue.

Specified by:

size in interface Linear

Specified by:

size in interface Queue

Specified by:

size in interface Structure

Returns:

The number of elements within the queue.

clear

public void clear()

Remove all the values from the queue.

Specified by:

clear in interface Structure

isEmpty

public boolean isEmpty()

Determine if the queue is empty.

Specified by:

isEmpty in interface Structure

Overrides:

isEmpty in class AbstractStructure

Returns:

True iff the queue is empty.

iterator

public Iterator iterator()

Description copied from interface: Structure

Returns an iterator for traversing the structure.

Specified by:

iterator in interface Structure

Returns:

an iterator for traversing the structure

See Also:

AbstractIterator, Iterator, Enumeration, Structure.elements()

toString

public String toString()

Construct a string representation of the queue.

Overrides:

toString in class Object

Returns:

String representing the queue.