Tokens.countTokens().... Help

Question

Hi All,
Can anyone out there tell me why my tokens.countTokens() doesn't work? It returns 0 with the while loop in place and a 4 when I comment out the while loop. I need for the tokenCount to happen after the while loop. Any ideas would be a greatly appreciated.
StringTokenizer tokens = new StringTokenizer("token count doesn't work");
while (tokens.hasMoreTokens()){
     tmp = tokens.nextToken();
     output += tmp.charAt(0) + " ";
}     // end while
// get the number of words
output += "\no Number of words: " + tokens.countTokens();Thanks,
Karl

Answer 1

Try reading the API documentation. The API documentation for StingTokenizer.countTokens states:
Calculates the number of times that this tokenizer's nextToken method can be called before it generates an exception.
Since you have already exhausted all the tokens when you call this method, of course it will return 0. If you want the count of tokens before you start grabbing tokens, then just save the token count to a variable before the loop:
int tokenCount = tokens.countTokens();
while (tokens.hasMoreTokens()){
     tmp = tokens.nextToken();
     output += tmp.charAt(0) + " ";
}     // end while
// get the number of words
output += "\no Number of words: " + tokenCount;