Java Hierarchical Enum Structure

Asked Nov 24 '16 at 21:00

Active Nov 24 '16 at 21:22

Viewed 242 times

How can I make a hierarchical structure with Java enum? For example, I have following levels:

Level- [Level1, Level2]
Level1 - [Level1_1, Level1_2, Level1_3] 
Level2 - [Level2_1, Level2_2]

Can I create an enum 'Levels' like below, so I can access it using Level.Level1.Level1_1 or Level.Level2.Level2_2 etc, Sub-levels should be accessed via its parent:

public enum Levels {
    Level1 {
        Level1_1,
        Level1_2,
        Level1_3
    },
    Level2 {
        Level2_1,
        Level2_2,
    }
}

edited Nov 24 '16 at 21:22

Jerrybibo

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asked Nov 24 '16 at 21:00

suraj bahl

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Your example is a little abstract, but any reason `Level1` and `Level2` can't be separate classes? – shmosel Nov 24 '16 at 21:05
You can't do that with an enum. – 4castle Nov 24 '16 at 21:05
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what are you using the enum for? I think, you should use classes instead – Jarlik Stepsto Nov 24 '16 at 21:07
Maybe something like my answer to this [question](https://stackoverflow.com/questions/2636845/how-to-nest-an-enum-inside-the-value-of-an-enum/8960269#8960269). – Ray Tayek Jul 29 '19 at 23:35

Java Hierarchical Enum Structure

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