| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package java.security.acl; |
| |
| import java.security.Principal; |
| import java.util.Enumeration; |
| |
| /** |
| * A {@code Principal} that represents a group of principals. |
| * |
| * @see Principal |
| */ |
| public interface Group extends Principal { |
| |
| /** |
| * Adds a member to this group. |
| * |
| * @param user |
| * the member to add. |
| * @return {@code true} if the member was added, {@code false} if it was already a member. |
| */ |
| boolean addMember(Principal user); |
| |
| /** |
| * Removes a member from this group. |
| * |
| * @param user |
| * the member to remove. |
| * @return {@code true} if the member was removed, {@code false} if it was not a member. |
| */ |
| boolean removeMember(Principal user); |
| |
| /** |
| * Returns whether the specified principal is a member of this group. |
| * |
| * @param member |
| * the principal to check. |
| * @return {@code true} if the principal is a member, otherwise {@code false}. |
| */ |
| boolean isMember(Principal member); |
| |
| /** |
| * Returns the members of this group. |
| * |
| * @return the members of this group. |
| */ |
| Enumeration<? extends Principal> members(); |
| |
| } |