public enum MqttQoS extends Enum<MqttQoS>
| 枚举常量和说明 |
|---|
AT_LEAST_ONCE |
AT_MOST_ONCE |
EXACTLY_ONCE |
FAILURE |
public static final MqttQoS AT_MOST_ONCE
public static final MqttQoS AT_LEAST_ONCE
public static final MqttQoS EXACTLY_ONCE
public static final MqttQoS FAILURE
public static MqttQoS[] values()
for (MqttQoS c : MqttQoS.values()) System.out.println(c);
public static MqttQoS valueOf(String name)
name - 要返回的枚举常量的名称。IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量NullPointerException - 如果参数为空值public static MqttQoS valueOf(int value)
public int value()
Copyright © 2025. All rights reserved.