Unable to get rid of lint warnings

I have a bit of code that is giving the error "87: warning: [unchecked] unchecked conversion". I have tried everything, putting casts everywhere, and after 2 hours I can't figure out what is causing this error.

The line that gives the error :

ArrayList<String> WordList = DictionaryWords.map.get(wordtype);

The cursor highlights the word 'wordtype'.

The data structures :

private static class WordTable extends java.lang.Object implements Serializable

{

HashMap<String,ArrayList> map = new HashMap<String,ArrayList>();

}

private WordTable DictionaryWords = new WordTable();

[655 byte] By [ChrisJCormiera] at [2007-10-2 12:28:44]