"延伸"枚举 [英] "extending" enum

问题描述

 枚举枚举Enum1 {
 A（1,2），
 B（3,4）; 
 
 public int a，b; 
 private Enum1（int a，int b）{
 this.a = a; 
 this.b = b; 
} 
} 
 
 
枚举Enum2 {
 C（6,7），
 D（8,9）; 
 
 public int a，b; 
 private Enum1（int a，int b）{
 this.a = a; 
 this.b = b; 
} 
} 
  

等等...
不幸的是Enum1和Enum2已经扩展了Enum，所以不可能写出一个可以扩展的超类。
有另外一种方法来存档吗？

更新：这里是一个真实世界的例子。想想一个经典的RPG，你有物品，盔甲，武器等，给你一个奖金。

 枚举武器{
 SWORD（3,0,2），
 AXE_OF_HEALTH（3,4,1）; 
 
 //这些武器的奖金
 public int力量，健康，防守; 
私人武器（int strength，int health，int defense）{
 this.strength = strength; 
 this.health = health; 
 this.defense = defense; 
} 
} 
 
枚数装甲{
 SHIELD（3,1,6），
 BOOTS（0,4,1）; 
 
 //奖金
 public int力量，健康，防守; 
私人武器（int strength，int health，int defense）{
 this.strength = strength; 
 this.health = health; 
 this.defense = defense; 
} 
} 
  

解决方案

枚举扩展枚举。他们也不能扩展别的东西。但是，他们可以实现接口。

你可以使它们都实现一个通用的接口，并在接口上放置你的getA（），getB（）方法。 >

I have multiple enum's that all have the same constructor and attributes, like this:

enum Enum1 {
    A(1,2),
    B(3,4);

    public int a, b;
    private Enum1(int a, int b) {
        this.a = a;
        this.b = b;
    }
}


enum Enum2 {
    C(6,7),
    D(8,9);

    public int a, b;
    private Enum1(int a, int b) {
        this.a = a;
        this.b = b;
    }
}

and so on... Unfortunately Enum1 and Enum2 already extend Enum, so it isn't possible to write a superclass they could extend. Is there another way to archive this?

Update: here comes a "real-world" example. Think of a classic rpg, where you have items, armour, weapons etc. which give you a bonus.

enum Weapon {
    SWORD(3,0,2),
    AXE_OF_HEALTH(3,4,1);

    // bonus for those weapons
    public int strength, health, defense;
    private Weapon(int strength, int health, int defense) {
        this.strength = strength;
        this.health = health;
        this.defense = defense;
    }
}

enum Armour {
    SHIELD(3,1,6),
    BOOTS(0,4,1);

    // bonus
    public int strength, health, defense;
    private Weapon(int strength, int health, int defense) {
        this.strength = strength;
        this.health = health;
        this.defense = defense;
    }
}

解决方案

Enums extend Enum. They cannot also extend something else. However, they can implement interfaces.

You can make them both implement a common interface, and put your getA(), getB() methods on the interface.

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