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Wed Mar 24 16:00:00 GMT 2004
CompositeA
package examples.composite.java; /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- * * This file is part of the design patterns project at UBC * * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/. * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is ca.ubc.cs.spl.pattern. * * Contributor(s): */ import java.util.LinkedList; /** * Implements a <i>Composite</i>. Children are stored in a linked list. * * @author Jan Hannemann * @author Gregor Kiczales * @version 1.0, 05/13/02 * * @see Component * @see LeafB */ public class CompositeA implements Component { /** * stores the children for this component */ protected LinkedList children = new LinkedList(); // Component interface /** * stores an ID for this composite */ protected int id = 0; /** * Creates a new CompositeA with a given ID * * @param id the ID for the new object */ public CompositeA(int id) { this.id = id; } /** * Overwrites the <code>toString()</code> method from <code>Object</code> * to print information about this object */ public String toString() { return ("I am A (ID "+id+")"); } /** * Adds a child to the component * * @param component the child to add */ public void add(Component component) {this.children.add(component);} /** * Adds a child to the component * * @param component the child to add */ public void remove(Component component) {this.children.remove(component);} /** * Returns a child of the component * * @param index the position of the child */ public Component getChild(int index) {return (Component) children.get(index);} /** * Returns the number of chilren a component has * * @returns the number of children of this component */ public int getChildCount() {return children.size();} }
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