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1: /* ======================================================================== 2: * JCommon : a free general purpose class library for the Java(tm) platform 3: * ======================================================================== 4: * 5: * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 6: * 7: * Project Info: http://www.jfree.org/jcommon/index.html 8: * 9: * This library is free software; you can redistribute it and/or modify it 10: * under the terms of the GNU Lesser General Public License as published by 11: * the Free Software Foundation; either version 2.1 of the License, or 12: * (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but 15: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 16: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 17: * License for more details. 18: * 19: * You should have received a copy of the GNU Lesser General Public 20: * License along with this library; if not, write to the Free Software 21: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 22: * USA. 23: * 24: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 25: * in the United States and other countries.] 26: * 27: * --------------- 28: * ObjectList.java 29: * --------------- 30: * (C)opyright 2003, 2004, by Object Refinery Limited and Contributors. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): -; 34: * 35: * $Id: ObjectList.java,v 1.6 2005/11/14 10:56:42 mungady Exp $ 36: * 37: * Changes 38: * ------- 39: * 17-Jul-2003 : Version 1 (DG); 40: * 13-Aug-2003 : Refactored to extend AbstractObjectList (DG); 41: * 21-Oct-2004 : removed duplicate interface declarations and empty methods. 42: * 22-Oct-2004 : Restored removed methods - see note in code (DG); 43: * 44: */ 45: 46: package org.jfree.util; 47: 48: 49: /** 50: * A list of objects that can grow as required. 51: * <p> 52: * When cloning, the objects in the list are NOT cloned, only the references. 53: * 54: * @author Thomas Morgner 55: */ 56: public class ObjectList extends AbstractObjectList { 57: 58: /** 59: * Default constructor. 60: */ 61: public ObjectList() { 62: } 63: 64: /** 65: * Creates a new list. 66: * 67: * @param initialCapacity the initial capacity. 68: */ 69: public ObjectList(final int initialCapacity) { 70: super(initialCapacity); 71: } 72: 73: // NOTE: the methods below look redundant, but their purpose is to provide public 74: // access to the the get(), set() and indexOf() methods defined in the 75: // AbstractObjectList class, for this class only. For other classes 76: // (e.g. PaintList, ShapeList etc) we don't want the Object versions of these 77: // methods to be visible in the public API. 78: 79: /** 80: * Returns the object at the specified index, if there is one, or <code>null</code>. 81: * 82: * @param index the object index. 83: * 84: * @return The object or <code>null</code>. 85: */ 86: public Object get(final int index) { 87: return super.get(index); 88: } 89: 90: /** 91: * Sets an object reference (overwriting any existing object). 92: * 93: * @param index the object index. 94: * @param object the object (<code>null</code> permitted). 95: */ 96: public void set(final int index, final Object object) { 97: super.set(index, object); 98: } 99: 100: /** 101: * Returns the index of the specified object, or -1 if the object is not in the list. 102: * 103: * @param object the object. 104: * 105: * @return The index or -1. 106: */ 107: public int indexOf(final Object object) { 108: return super.indexOf(object); 109: } 110: 111: }