Checking if a class is java.lang.Enum

Question

I'm trying to know if a class is an Enum, but I think I'm missing something:

if (test.MyEnum.class instanceof Enum<?>.class)  obj = resultWrapper.getEnum(i, test.MyEnum.class); else   obj = resultWrapper.getObject(i); 

It gives me an error saying that Enum.class is not valid. So how I can check if a class is a Enum? I'm pretty sure it is possible to determine that, I'm just unable to get it.

Thanks

Answer 1

The correct syntax would be:

Enum.class.isAssignableFrom(test.MyEnum.class) 

but for enums, here is a more convenient method:

if (someObject.getClass().isEnum())) 

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Update: for enum items with a body (e. g. that override methods), this won't actually work. In that case, use

if (someObject instanceof Enum<?>) 

Reference:

• Class.isEnum()

Answer 2

If you're talking about Java 5 new feature - enum (it's not very new actually), then this is the way to go:

if (obj.getClass().isEnum()) {  ... } 

If Enum is your custom class, then just check that obj instanceof Enum.