java enum from int

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Joaquín
01 Sep 2016
1yourEnum.ordinal()
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Ian
08 Mar 2016
1//If performance is not an issue (code is only called a few times)
2//The reason this is expensive is that .values() returns an array,
3//which is a copy of the original because the array might be modified.
4MyEnum.values()[x]
5
6//If performance is an issue (code is run hundreds of times)
7public enum MyEnum {
8    EnumValue1,
9    EnumValue2;
10
11    public static MyEnum fromInteger(int x) {
12        switch(x) {
13        case 0:
14            return EnumValue1;
15        case 1:
16            return EnumValue2;
17        }
18        return null;
19    }
20}
source
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