public enum Protocol extends Enum<Protocol>
public static Protocol[] values()
for (Protocol c : Protocol.values()) System.out.println(c);
public static Protocol 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Copyright © 2020. All Rights Reserved.