Hi, my partner and I've been working on programming problems#3.2 and 3.5, but we haven't been able to get the answers. In #3.1, does "the sentinel value" mean "0" in this case, or alphabet characters or nothing's entered? In #3.5, we could get the output which is one word in each line. But we can't get the output which produces each characters in each line. We're wondering if we can use "StringTokenizer (String str, String delimiters)" method instead of "StringTokenizer (String str)" method, which we're using now. However, we can't get an idea how to specify the delimiters. Do you guys have any idea? Help! -Hiroe