Java tutorial
/* * Copyright 2014 The Netty Project * * The Netty Project 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 io.netty.handler.codec.mqtt; import io.netty.util.internal.ObjectUtil; import io.netty.util.internal.StringUtil; import java.util.ArrayList; import java.util.Collections; import java.util.List; /** * Payload of the {@link MqttSubAckMessage} */ public class MqttSubAckPayload { private final List<Integer> grantedQoSLevels; public MqttSubAckPayload(int... grantedQoSLevels) { ObjectUtil.checkNotNull(grantedQoSLevels, "grantedQoSLevels"); List<Integer> list = new ArrayList<Integer>(grantedQoSLevels.length); for (int v : grantedQoSLevels) { list.add(v); } this.grantedQoSLevels = Collections.unmodifiableList(list); } public MqttSubAckPayload(Iterable<Integer> grantedQoSLevels) { ObjectUtil.checkNotNull(grantedQoSLevels, "grantedQoSLevels"); List<Integer> list = new ArrayList<Integer>(); for (Integer v : grantedQoSLevels) { if (v == null) { break; } list.add(v); } this.grantedQoSLevels = Collections.unmodifiableList(list); } public List<Integer> grantedQoSLevels() { return grantedQoSLevels; } @Override public String toString() { return new StringBuilder(StringUtil.simpleClassName(this)).append('[').append("grantedQoSLevels=") .append(grantedQoSLevels).append(']').toString(); } }