/* * Copyright (c) 2002, 2007, 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.remote; import java.io.Serializable;import java.security.Principal; /** * <p>The identity of a remote client of the JMX Remote API.</p> * * <p>Principals such as this <code>JMXPrincipal</code> * may be associated with a particular <code>Subject</code> * to augment that <code>Subject</code> with an additional * identity.  Refer to the {@link javax.security.auth.Subject} * class for more information on how to achieve this. * Authorization decisions can then be based upon * the Principals associated with a <code>Subject</code>. * * @see java.security.Principal * @see javax.security.auth.Subject * @since 1.5 */public class JMXPrincipal implements Principal, Serializable {     private static final long serialVersionUID = -4184480100214577411L;     /**     * @serial The JMX Remote API name for the identity represented by     * this <code>JMXPrincipal</code> object.     * @see #getName()     */    private String name;     /**     * <p>Creates a JMXPrincipal for a given identity.</p>     *     * @param name the JMX Remote API name for this identity.     *     * @exception NullPointerException if the <code>name</code> is     * <code>null</code>.     */    public JMXPrincipal(String name) {        if (name == null)            throw new NullPointerException("illegal null input");         this.name = name;    }     /**     * Returns the name of this principal.     *     * <p>     *     * @return the name of this <code>JMXPrincipal</code>.     */    public String getName() {        return name;    }     /**     * Returns a string representation of this <code>JMXPrincipal</code>.     *     * <p>     *     * @return a string representation of this <code>JMXPrincipal</code>.     */    public String toString() {        return("JMXPrincipal:  " + name);    }     /**     * Compares the specified Object with this <code>JMXPrincipal</code>     * for equality.  Returns true if the given object is also a     * <code>JMXPrincipal</code> and the two JMXPrincipals     * have the same name.     *     * <p>     *     * @param o Object to be compared for equality with this     * <code>JMXPrincipal</code>.     *     * @return true if the specified Object is equal to this     * <code>JMXPrincipal</code>.     */    public boolean equals(Object o) {        if (o == null)            return false;         if (this == o)            return true;         if (!(o instanceof JMXPrincipal))            return false;        JMXPrincipal that = (JMXPrincipal)o;         return (this.getName().equals(that.getName()));    }     /**     * Returns a hash code for this <code>JMXPrincipal</code>.     *     * <p>     *     * @return a hash code for this <code>JMXPrincipal</code>.     */    public int hashCode() {        return name.hashCode();    }}