Java tutorial
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 1997-2017 Oracle and/or its affiliates. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can * obtain a copy of the License at * https://oss.oracle.com/licenses/CDDL+GPL-1.1 * or LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at LICENSE.txt. * * GPL Classpath Exception: * Oracle designates this particular file as subject to the "Classpath" * exception as provided by Oracle in the GPL Version 2 section of the License * file that accompanied this code. * * Modifications: * If applicable, add the following below the License Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyright [year] [name of copyright owner]" * * Contributor(s): * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package javax.mail; /** * This class models a Part that is contained within a Multipart. * This is an abstract class. Subclasses provide actual implementations.<p> * * BodyPart implements the Part interface. Thus, it contains a set of * attributes and a "content". * * @author John Mani * @author Bill Shannon */ public abstract class BodyPart implements Part { /** * The <code>Multipart</code> object containing this <code>BodyPart</code>, * if known. * @since JavaMail 1.1 */ protected Multipart parent; /** * Return the containing <code>Multipart</code> object, * or <code>null</code> if not known. * * @return the parent Multipart */ public Multipart getParent() { return parent; } /** * Set the parent of this <code>BodyPart</code> to be the specified * <code>Multipart</code>. Normally called by <code>Multipart</code>'s * <code>addBodyPart</code> method. <code>parent</code> may be * <code>null</code> if the <code>BodyPart</code> is being removed * from its containing <code>Multipart</code>. * @since JavaMail 1.1 */ void setParent(Multipart parent) { this.parent = parent; } }