Count exact number of charaters in a string in java

Question

I have a string of names where all the different names are seperated by the same character (#) e.g. tom#will#robert#

I want to be able to count the number of names by counting the number of times that # appears, How would i go about doing this?

possible duplicate of [How do I count the number of occurrences of a char in a String?](http://stackoverflow.com/questions/275944/how-do-i-count-the-number-of-occurrences-of-a-char-in-a-string) — Brendan Long, Nov 25 '11 at 21:10

勿绮语 · Accepted Answer · 2012-04-15T15:06:58.133

4

You need:

yourstring.splt("#").length;

edited Apr 15 '12 at 15:06

answered Nov 25 '11 at 21:12

勿绮语

1

...only other thing is to perhaps subtract 1 iff the string does not end with a #. Also, for very, very long Strings, manually counting may be more processor/memory friendly. – Jaco Van Niekerk Nov 25 '11 at 21:14

score 0 · Answer 2 · answered Nov 25 '11 at 21:11

Why would you want to count the number of tokens by counting the number of the delimiters?

Just use StringTokenizer to get all tokens (set the delimiter as #) and then get its size.

StringTokenizer(String str, String delim)
      Constructs a string tokenizer for the specified string.

then:

 int    countTokens()
      Calculates the number of times that this tokenizer's nextToken method can be called before it generates an exception.

2 Answers2