Is this compiler warning impossible to get rid of?

Hi all,

I'm talking about of the following warning:
  "myClass.java uses unchecked or unsafe operations.
   Note: Recompile with -Xlint:unchecked for details."

Usually when this warning occours for a LinkedList or for other linear
structures, is sufficient to declare the type, e.g.:
   LinkedList<Integer> list = new LinkedList<Integer>();
and the warning disappears.

but in my case, I have an array of Java's LinkedLists, and I didn't find the
way to get rid of the warning!
Does anyone have an idea?

My declaration (the structure is a separated chaining hash which works
well):

class HashSeparateChaining
{
    protected int hashSize;
    protected LinkedList[] hash;

    public HashSeparateChaining (int size)
    {
        hashSize = size;
        inCount = 0;
        outCount = 0;
        hash = new LinkedList[hashSize];
        for(int i = 0; i < hashSize; i++)
            hash[i] = new LinkedList();
    }

    // rest of the class
    // [.......................]
}

Thanks in advance.

--
ciao
Vittorix