枚举键的名称和值

Question

我想使用Enum作为键值。我厌倦了这个：

public interface ElementTypeEnum
{
    public static String QUEUE_TRANSACTION = "queue_transaction";

    public static String QUEUE_API_ATTEMPT = "queue_api_attempt";
}

但是当我尝试以这种方式使用它时：QUEUE_TRANSACTIONs cannot be resolved or is not a field

使用它的正确方法是什么？

Answer 1

枚举和界面一般是两个不同的概念，因此您需要阅读：

https://docs.oracle.com/javase/tutorial/java/concepts/interface.html

What are enums and why are they useful?

https://docs.oracle.com/javase/tutorial/java/javaOO/enum.html

What is the use of interface constants?