edu.ksu.cis.viewer
Class ConsList

java.lang.Object
  edu.ksu.cis.viewer.ConsList

public final class ConsList

extends Object

An immutable linear recursive structure with a head, which is an Object, and a tail, which is a ConsList.

Author:

Rod Howell (howell@cis.ksu.edu)

Constructor Summary

ConsList()
Constructs an empty ConsList.

ConsList(Object h, ConsList lst)
Constructs a ConsList with the given head and tail.

Method Summary

Object	getHead() Returns the head of this list.
ConsList	getTail() Returns the tail of the list.
boolean	isEmpty() Returns true if this list is empty.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConsList

public ConsList()

Constructs an empty ConsList.

ConsList

public ConsList(Object h,
                ConsList lst)

Constructs a ConsList with the given head and tail. If the given tail is null, an empty ConsList is used in its place.

Parameters:

h - the head of the list

lst - the tail of the list

Method Detail

isEmpty

public boolean isEmpty()

Returns true if this list is empty.

getHead

public Object getHead()
               throws EmptyListException

Returns the head of this list.

Throws:

EmptyListException - If this list is empty.

getTail

public ConsList getTail()
                 throws EmptyListException

Returns the tail of the list.

Throws:

EmptyListException - If this list is empty.