ArrayList of Object as the Value of an EnumMap

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:

h开发者_运维百科and.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

---

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.

---

Also, I assume myEnum refers to the class name and not an instance of class MyEnum and same for myObj. We usually start class names with uppercase letters, so this is a little bit confusing.

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

You need to parameterize the ArrayList with ();

---

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

should be like this:

   map.put(myEnum.someEnum, new ArrayList<myObj>());

---

melv's code seems to work:

import java.util.*;
enum Color {
    r,g,b;
}
public class Main{
    public static void main(String[] args) {
        EnumMap<Color, List<Object>> map = new EnumMap<Color, List<Object>>(Color.class);
        map.put(Color.r, new ArrayList<Object>());
        map.get(Color.r).add(new Integer(42));
        System.out.println(map.get(Color.r).get(0));
    }
}