Enum Reflections Java

Question

I know my use case seem silly but this is the easiest way to explain what i need so here it goes

lets say i want to write the following silly generic methods :

void toString(Object o);

Object fromString(String enumObject,Class<Enum> classOfTheObject);

given :

public enum PositionType 
{
    B,
    F,
    L,
    R
}

and :

PositionType ptype = PositionType.B;

how do i go on and implement those methods so that :

fromString(toString(ptype),PositionType.class).equals(PositionType.B);

would return true?

i tried looking at the java reflections tutorial, but still i didnt find how to solve it there...

please notice that the implementation must not rely on the specific enum type, it could be any enum type, but for what i need, we can limit ourselves to only enum objects.

M Abbas · Accepted Answer · 2013-07-06 23:05:23Z

1

You can achieve this with many solutions, here is one of them (I wrote the strict minimum):

String toString(Object o) {
   return ((Enum) o).name();
}

<T extends Enum<T>> Object fromString(Class<T> enumType, String o) {
   return Enum.valueOf(enumType, o);
}

edited Jul 6, 2013 at 23:05

answered Jul 6, 2013 at 22:54

M Abbas

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