Opus5
Interface Container

All Superinterfaces:

Comparable

All Known Subinterfaces:

Deque, Digraph, DoubleEndedPriorityQueue, Graph, HashTable, MergeablePriorityQueue, Multiset, OrderedList, Partition, PriorityQueue, Queue, SearchableContainer, SearchTree, Set, SortedList, Stack, Tree

All Known Implementing Classes:

AbstractContainer

public interface Container

extends Comparable

Encapsulates methods common to all container classes.

Version:

$Id: Container.java,v 3.2 1998/07/28 02:24:04 brpreiss Exp $

Author:

Bruno R. Preiss, P.Eng.

Field Summary

static java.lang.String

copyright

Method Summary

void	accept(Visitor visitor) Causes a visitor to visit the objects in this container.
int	getCount() Returns the number of objects in this container.
Enumeration	getEnumeration() Returns an enumeration that enumerates the objects in this container.
boolean	isEmpty() Tests whether this container is empty.
boolean	isFull() Tests whether this container is full.
void	purge() Makes this container empty.

Methods inherited from interface Opus5.Comparable

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

Field Detail

copyright

public static final java.lang.String copyright

Method Detail

getCount

public int getCount()

Returns the number of objects in this container.

Returns:

The number of objects in this container.

isEmpty

public boolean isEmpty()

Tests whether this container is empty.

Returns:

True if the container is empty; false if it is not.

isFull

public boolean isFull()

Tests whether this container is full.

Returns:

True if the container is full; false if it is not.

purge

public void purge()

Makes this container empty. All references to contained objects are dropped. Thus, the contained objects may be garbage collected.

accept

public void accept(Visitor visitor)

Causes a visitor to visit the objects in this container. This method takes a visitor and, as long as the IsDone method of that visitor returns false, this method invokes the Visit method of the visitor for each object in this container.

Parameters:

visitor - The visitor to accept.

See Also:

Visitor

getEnumeration

public Enumeration getEnumeration()

Returns an enumeration that enumerates the objects in this container.

Returns:

An enumeration that enumerates the objects in this container.

See Also:

Enumeration