if (boolean == false) vs. if (!boolean)

Possible Duplicate:
Is it bad to explicitly compare against boolean constants e.g. if (b == false) in Java?

In this NotePadProvider sample code, I noticed that the author chose the form:

    if (values.containsKey(NoteColumns.CREATED_DATE) == false) {
        values.put(NoteColumns.CREATED_DATE, now);
    }

Over:

    if (!values.containsKey(NoteColumns.CREATED_DATE)) {
        values.put(NoteColumns.CREATED_DATE, now);
    }

Is there any advantage in the first form over the more logical one?