streamtokenizer class

[Guigui]

hi,<br>i have a file with following lines:<br>&quot;0.12 45.2 56.0 48.2<br>&nbsp;45.2 56.1 48.1 10.0...<br>so the file contains numbers separate by white space<br>i want to &quot;extract&quot; each number separatly but i don't<br>know how indicate that the white separator is a white space.<br>If someone can help me.<br>Thanks

 

[fenris]

Is this input file one that you built yourself? If so then change the delimiters to ¦¦ or some odd character set like that? If not as I suspect then you could use a StringTokenizer object to parse each line:<br><br>StringTokenizer t = new StringTokenizer(line, &quot; &quot<br><br>where line is the current line being read from the file.<br><br>You would use the StringTokenizer object in a while loop so that it keeps reading till there is no more data left to read in the file.<br><br>Hope this helps.... <p>Troy Williams B.Eng.<br><a href=mailto:fenris@hotmail.com>fenris@hotmail.com</a><br><a href= > </a><br>

 

[carpeliam]

StreamTokenizer should work fine for this; probably better than StringTokenizer (where you'd have to assemble the string before even beginning the parsing). However, I think any kind of whitespace is a delimiter by default in StreamTokenizer. Please let me know what kind of errors you're getting, and I should be able to help. <p>Liam Morley<br><a href=mailto:lmorley@wpi.edu>lmorley@wpi.edu</a><br><a href=

http://www.wpi.edu/~lmorley/>

] :: imotic :: website :: [</a><br>"light the deep, and bring silence to the world.<br>
light the world, and bring depth to the silence.

 

[iza]

Liam, you're right, any kind of whitespace is a delimiter by default for streamtokeniser (from the doc : The stream tokenizer is initialized to the following default state : ... All byte values '\u0000' through '\u0020' are considered to be white space. )

Everyone, can you help ? because i **don't** want the whitespace to be a delimiter - i want the &quot;,&quot; to be - and i want the white spaces as parts of the &quot;words&quot; i get
(a line in my file looks like : &quot;the name, the surname, the adress ...&quot; and i don't want to get : &quot;the/name/the/surname...&quot; )

i've tried (st here is a streamtokenizer) :
st.quoteChar(',');
or st.whitespaceChars(',', ',');
to declare that the &quot;,&quot; should be a delimiter and this is fine

st.wordChars(' ', ' ');
to declare that the whitespace should be part of the &quot;tokens&quot; but it doesn't seem to be working ...

so then i've add (before) the : st.resetSyntax() but it resets so well that i get each single char as a token :-(

i'm sure it's an easy and quick thing to do but i just can't figure out how to
oh and i've tried to modify the source file as &quot;the name&quot;, &quot;the surname&quot;, ... but then i get only &quot;, &quot;, &quot; ...

 

[iza]

sorry, i finally fixed it
but i still don't understand exactly *how*, because here are the remaining lines, enough to do what i wanted to :
st.quoteChar(',');
st.wordChars(' ', ' ');
st.whitespaceChars(',', ',');
that's what i was using at first !! does someone know if the order matters here or is it pure magic that it didn't work and now it does ??