I want to take an existing enum and add more elements to it as follows:
enum A {a,b,c}
enum B extends A {d}
/*B is {a,b,c,d}*/
Is this possible in Java?
I want to take an existing enum and add more elements to it as
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I want to take an existing enum and add more elements to it as follows:
enum A {a,b,c}
enum B extends A {d}
/*B is {a,b,c,d}*/
Is this possible in Java?
No, you can’t do this in Java. Aside from anything else,
dwould then presumably be an instance ofA(given the normal idea of “extends”), but users who only knew aboutAwouldn’t know about it – which defeats the point of an enum being a well-known set of values.If you could tell us more about how you want to use this, we could potentially suggest alternative solutions.