List
toArray(T[] a)

public Integer[] queryForInts(String sql, Object[] args) throws Exception {
    List<Integer> list=queryForList(sql,args,new RowMapper<Integer>(){

        public Integer mapRow(ResultSet rs, int index) throws SQLException {
            return rs.getInt(1);
        }
        
    });
    if(list==null)return null;
    return list.toArray(new Integer[]{});
}