/* * Copyright (c) 1996, 1999, 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 sun.security.acl; import java.security.Principal;import java.security.acl.*; /** * The PermissionImpl class implements the permission * interface for permissions that are strings. * @author Satish Dharmaraj */public class PermissionImpl implements Permission {     private String permission;     /**     * Construct a permission object using a string.     * @param permission the stringified version of the permission.     */    public PermissionImpl(String permission) {        this.permission = permission;    }     /**     * This function returns true if the object passed matches the permission     * represented in this interface.     * @param another The Permission object to compare with.     * @return true if the Permission objects are equal, false otherwise     */    public boolean equals(Object another) {        if (another instanceof Permission) {            Permission p = (Permission) another;            return permission.equals(p.toString());        } else {            return false;        }    }     /**     * Prints a stringified version of the permission.     * @return the string representation of the Permission.     */    public String toString() {        return permission;    }     /**     * Returns a hashcode for this PermissionImpl.     *     * @return a hashcode for this PermissionImpl.     */    public int hashCode() {        return toString().hashCode();    } }