如何将具有分配值的枚举从C移植到Java？

Question

I am trying to port a very simple app from C to Java. Unfortunately I haven't worked quite a lot with enums before so the following code confuses me:

typedef enum {
    LT = 0,
    LTE = 1,
    E = 2,
    GTE = 3,
    GT = 4
} S;

From my understanding the numbers are the values which represent every enum.

How could I do the same in Java?

Should I take this approach

private enum S{
    LT,
    LTE,
    E,
    GTE,
    GT
}

or

This approach?

private enum S{
    LT(0),
    LTE(1),
    E(2),
    GTE(3),
    GT(4);      

    private int code; 

    S(int code) {
        this.code = code;
    } 
    public int getCode() {
        return code;
    }
}

If the enumeration in Java already starts from 0 it would be a little redundant to add the second method. I am confused...

Answer 1

You should do it the first way. The great thing about enum constants in Java is that they are not int values, so you do not need to assign values to them in this way.

If for some reason you need to know the index of an enum constant (and this is rare), you can do LT.ordinal() anyway.