在java中以枚举方式存储整数值作为常量 [英] Storing integer values as constants in Enum manner in java

问题描述

我正在以下列方式创建整数常量：

I'm currently creating integer constants in the following manner.

public class Constants {
public static int SIGN_CREATE=0;
public static int SIGN_CREATE=1;
public static int HOME_SCREEN=2;
public static int REGISTER_SCREEN=3;
}

当我尝试以枚举方式这样做

When i try to do this in enum manner

public enum PAGE{SIGN_CREATE,SIGN_CREATE,HOME_SCREEN,REGISTER_SCREEN}

，当我使用 PAGE.SIGN_CREATE 它应该返回1;

and When i used PAGE.SIGN_CREATE it should return 1;

推荐答案

嗯，你不能这样做。 PAGE.SIGN_CREATE 永远不会返回1;它将返回 PAGE.SIGN_CREATE 。这是枚举类型的要点。

Well, you can't quite do it that way. PAGE.SIGN_CREATE will never return 1; it will return PAGE.SIGN_CREATE. That's the point of enumerated types.

但是，如果您愿意添加一些按键，可以添加字段到您的枚举，如下所示：

However, if you're willing to add a few keystrokes, you can add fields to your enums, like this:

    public enum PAGE{
        SIGN_CREATE(0),
        SIGN_CREATE_BONUS(1),
        HOME_SCREEN(2),
        REGISTER_SCREEN(3);

        private final int value;

        PAGE(final int newValue) {
            value = newValue;
        }

        public int getValue() { return value; }
    }

然后你调用 PAGE.SIGN_CREATE.getValue （）获得0。

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