/* * Copyright (c) 1999, 2005, 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;  /** * Represents an MBean attribute by associating its name with its value. * The MBean server and other objects use this class to get and set attributes values. * * @since 1.5 */public class Attribute implements Serializable   {     /* Serial version */    private static final long serialVersionUID = 2484220110589082382L;     /**     * @serial Attribute name.     */    private String name;     /**     * @serial Attribute value     */    private Object value= null;      /**     * Constructs an Attribute object which associates the given attribute name with the given value.     *     * @param name A String containing the name of the attribute to be created. Cannot be null.     * @param value The Object which is assigned to the attribute. This object must be of the same type as the attribute.     *     */    public Attribute(String name, Object value) {         if (name == null) {            throw new RuntimeOperationsException(new IllegalArgumentException("Attribute name cannot be null "));        }         this.name = name;        this.value = value;    }      /**     * Returns a String containing the  name of the attribute.     *     * @return the name of the attribute.     */    public String getName()  {        return name;    }     /**     * Returns an Object that is the value of this attribute.     *     * @return the value of the attribute.     */    public Object getValue()  {        return value;    }     /**     * Compares the current Attribute Object with another Attribute Object.     *     * @param object  The Attribute that the current Attribute is to be compared with.     *     * @return  True if the two Attribute objects are equal, otherwise false.     */      public boolean equals(Object object)  {        if (!(object instanceof Attribute)) {            return false;        }        Attribute val = (Attribute) object;         if (value == null) {            if (val.getValue() == null) {                return name.equals(val.getName());            } else {                return false;            }        }         return ((name.equals(val.getName())) &&                (value.equals(val.getValue())));    }     /**     * Returns a hash code value for this attribute.     *     * @return a hash code value for this attribute.     */    public int hashCode() {        return name.hashCode() ^ (value == null ? 0 : value.hashCode());    }     /**     * Returns a String object representing this Attribute's value. The format of this     * string is not specified, but users can expect that two Attributes return the     * same string if and only if they are equal.     */    public String toString() {        return getName() + " = " + getValue();    } }