/* * Copyright (c) 1999, 2004, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.management; // java importimport java.io.Serializable; // RI importimport javax.management.ObjectName;  /** * Used to represent the object name of an MBean and its class name. * If the MBean is a Dynamic MBean the class name should be retrieved from * the <CODE>MBeanInfo</CODE> it provides. * * @since 1.5 */public class ObjectInstance implements Serializable   {      /* Serial version */    private static final long serialVersionUID = -4099952623687795850L;     /**     * @serial Object name.     */    private ObjectName name;     /**     * @serial Class name.     */    private String className;     /**     * Allows an object instance to be created given a string representation of     * an object name and the full class name, including the package name.     *     * @param objectName  A string representation of the object name.     * @param className The full class name, including the package     * name, of the object instance.  If the MBean is a Dynamic MBean     * the class name corresponds to its {@link     * DynamicMBean#getMBeanInfo()     * getMBeanInfo()}<code>.getClassName()</code>.     *     * @exception MalformedObjectNameException The string passed as a     * parameter does not have the right format.     *     */    public ObjectInstance(String objectName, String className)            throws MalformedObjectNameException {        this(new ObjectName(objectName), className);    }     /**     * Allows an object instance to be created given an object name and     * the full class name, including the package name.     *     * @param objectName  The object name.     * @param className  The full class name, including the package     * name, of the object instance.  If the MBean is a Dynamic MBean     * the class name corresponds to its {@link     * DynamicMBean#getMBeanInfo()     * getMBeanInfo()}<code>.getClassName()</code>.     * If the MBean is a Dynamic MBean the class name should be retrieved     * from the <CODE>MBeanInfo</CODE> it provides.     *     */    public ObjectInstance(ObjectName objectName, String className) {        if (objectName.isPattern()) {            final IllegalArgumentException iae =                new IllegalArgumentException("Invalid name->"+                                             objectName.toString());            throw new RuntimeOperationsException(iae);        }        this.name= objectName;        this.className= className;    }      /**     * Compares the current object instance with another object instance.     *     * @param object  The object instance that the current object instance is     *     to be compared with.     *     * @return  True if the two object instances are equal, otherwise false.     */    public boolean equals(Object object)  {        if (!(object instanceof ObjectInstance)) {            return false;        }        ObjectInstance val = (ObjectInstance) object;        if (! name.equals(val.getObjectName())) return false;        if (className == null)            return (val.getClassName() == null);        return className.equals(val.getClassName());    }     public int hashCode() {        final int classHash = ((className==null)?0:className.hashCode());        return name.hashCode() ^ classHash;    }     /**     * Returns the object name part.     *     * @return the object name.     */    public ObjectName getObjectName()  {        return name;    }     /**     * Returns the class part.     *     * @return the class name.     */    public String getClassName()  {        return className;    }     /**     * Returns a string representing this ObjectInstance object. The format of this string     * is not specified, but users can expect that two ObjectInstances return the same     * string if and only if they are equal.     */    public String toString() {        return getClassName() + "[" + getObjectName() + "]";    } }