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dorien
dorien

Reputation: 5387

Defining an enum of integer values in java

I am trying to define an enum type with Integer values. I am trying to do this because I use this particular value in multiple places in my code and it can only be this. The code below does not work. I guess I am not supposed to use enum like this. Instead should I use a class and put the possible values in an array?

public enum Pitch {
    "60" , "62", "64", "65", "67", "69", "71", "72", "74";

}

Upvotes: 1

Views: 7795

Answers (3)

Stefan Winkler
Stefan Winkler

Reputation: 3956

You have to specify named LITERALS for enums.

What you can do is

public enum Pitch
{
    SOMENAME(60),
    SOMEOTHERNAME(62),
    // ...
    SOMELASTNAME(74);

    public final int value;

    public Pitch(int val)
    {
        this.value = val;
    }
 }

Then you can access your specific values by name and you can write 

Pitch pitch = ...;
int pitchInt = pitch.value;

to work with the values.

Upvotes: 1

TheSlater
TheSlater

Reputation: 660

If you like to access the values over an index, you should use an array like

String[] pitch = new String[] {
    "60" , "62", "64", "65", "67", "69", "71", "72", "74"
};

An enum is used to dont keep values in mind and give them names instead:

public enum Weekday {
    MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY
}

So you access the values over a name instead of an index.

Upvotes: 0

xlecoustillier
xlecoustillier

Reputation: 16351

I'm not sure enum is the best choice here, but you could try something like:

public enum Pitch {
    p60(60), p62(62), ...;

    private final int pitch;

    Pitch(int pitch) {
        this.pitch = pitch;
    }

    public int getValue() {
        return pitch;
    }
}

Upvotes: 2

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