001/** 002 * 003 * Copyright 2015 Florian Schmaus 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package org.jivesoftware.smack.roster; 019 020import org.jivesoftware.smack.packet.Presence; 021import org.jxmpp.jid.Jid; 022 023import java.util.Collection; 024 025/** 026 * Provides empty implementations for {@link RosterListener}. 027 * 028 * @since 4.2 029 */ 030public abstract class AbstractRosterListener implements RosterListener { 031 032 @Override 033 public void entriesAdded(Collection<Jid> addresses) { 034 } 035 036 @Override 037 public void entriesUpdated(Collection<Jid> addresses) { 038 } 039 040 @Override 041 public void entriesDeleted(Collection<Jid> addresses) { 042 } 043 044 @Override 045 public void presenceChanged(Presence presence) { 046 } 047}