Opus5
Class StackAsArray

java.lang.Object
  |
  +--Opus5.AbstractObject
        |
        +--Opus5.AbstractContainer
              |
              +--Opus5.StackAsArray

All Implemented Interfaces:

Comparable, Container, Stack

public class StackAsArray

extends AbstractContainer

implements Stack

A stack implemented using an array.

Version:

$Id: StackAsArray.java,v 3.3 1998/07/28 03:09:15 brpreiss Exp $

Author:

Bruno R. Preiss, P.Eng.

Field Summary

protected java.lang.Object[]

array The array.

Fields inherited from class Opus5.AbstractContainer

count

Fields inherited from interface Opus5.Stack

copyright

Constructor Summary

StackAsArray(int size)
Constructs a StackAsArray with the specified array length.

Method Summary

void	accept(Visitor visitor) Accepts a visitor and makes it visit all the object in this stack.
protected int	compareTo(Comparable arg) Compares this stack with the specified comparable object.
Enumeration	getEnumeration() Returns an enumberation that enumerates the objects in this stack.
java.lang.Object	getTop() Returns the object at the top of this stack.
boolean	isFull() Tests whether this stack is full.
java.lang.Object	pop() Pops and returns the object from the top of this stack.
void	purge() Purges this stack, making it empty.
void	push(java.lang.Object object) Pushes the specified object onto this stack.

Methods inherited from class Opus5.AbstractContainer

getCount, hashCode, isEmpty, toString

Methods inherited from class Opus5.AbstractObject

compare, equals, isEQ, isGE, isGT, isLE, isLT, isNE

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Opus5.Container

getCount, isEmpty

Methods inherited from interface Opus5.Comparable

compare, isEQ, isGE, isGT, isLE, isLT, isNE

Field Detail

array

protected java.lang.Object[] array

The array.

Constructor Detail

StackAsArray

public StackAsArray(int size)

Constructs a StackAsArray with the specified array length.

Parameters:

size - The desired array length.

Method Detail

purge

public void purge()

Purges this stack, making it empty.

Specified by:

purge in interface Container

push

public void push(java.lang.Object object)

Pushes the specified object onto this stack.

Specified by:

push in interface Stack

Parameters:

object - The object to be pushed onto this stack.

Throws:

ContainerFullException - If the stack is full.

pop

public java.lang.Object pop()

Pops and returns the object from the top of this stack.

Specified by:

pop in interface Stack

Returns:

The object from the top of this stack.

Throws:

ContainerEmptyException - If this stack is empty.

getTop

public java.lang.Object getTop()

Returns the object at the top of this stack.

Specified by:

getTop in interface Stack

Returns:

The object at the top of this stack.

Throws:

ContainerEmptyException - If this stack is empty.

accept

public void accept(Visitor visitor)

Accepts a visitor and makes it visit all the object in this stack.

Specified by:

accept in interface Container

Overrides:

accept in class AbstractContainer

Parameters:

visitor - The visitor to be accepted.

getEnumeration

public Enumeration getEnumeration()

Returns an enumberation that enumerates the objects in this stack.

Specified by:

getEnumeration in interface Container

Returns:

An enumberation that enumerates the objects in this stack.

isFull

public boolean isFull()

Tests whether this stack is full.

Specified by:

isFull in interface Container

Overrides:

isFull in class AbstractContainer

Returns:

True if this stack is full; false otherwise.

compareTo

protected int compareTo(Comparable arg)

Compares this stack with the specified comparable object. This method is not implemented.

Overrides:

compareTo in class AbstractObject

Parameters:

arg - The comparable object with which this stack is compared.

Throws:

MethodNotImplemented - Always.