Question

I’ve been trying to do this for a little while and it’s driving me crazy. I have an EnumMap where I have some enumeration as a key and an arraylist of a self-defined class as the value. So it looks something like this:

private EnumMap<myEnum,List<myObj>> map = 
    new EnumMap<myEnum,List<myObj>>(myEnum.class);

This keeps giving me an error. Not sure exactly what’s happening.

EDIT:
Yes, myEnum is an enum class.
My mistake, I should have mentioned what error is and where it happens. The error occurs when I do the following:

hand.put(myEnum.someEnum, new ArrayList());

The error I get is:
– Syntax error on tokens, TypeArgument1 expected
instead
– Syntax error on token “(“, < expected
– Syntax error on token “new”, delete this token

Answer 1

For:

enum Test {
  TEST0,
  TEST1;
}

You would use the EnumMap like this:

EnumMap<Test, List<Object>> map = new EnumMap<Test, List<Object>>(Test.class);
map.put(Test.TEST0, new ArrayList<Object>());

Hopefully that clears up the usage.