🚀 go-pugleaf

here is a way of reading your data:

"
  String tip = null;
  try
    {
    BufferedReader br = new BufferedReader(new FileReader("test.txt"));
    String str = null;
    while((str = br.readLine()) != null)
         {
         if (str.startsWith("LB ="))
                {
                tip = str.substring(4);  //removes the 'LB = '
                tip = tip.trim();  // tip is your values
                }
         }
    }
  catch(Exception ioe)
    {
...................................
    }

after that you have the values from your file
you can change them and then recreate your file based on the new values

with something like this:
"
        File file1 = new File("text.txt");
       FileOutputStream file = new FileOutputStream("text.txt",true);
       DataOutputStream out = new DataOutputStream(file);
       out.writeBytes(txt);   //txt is the content of your file
       out.flush();
"
also you'll have to include java.io.*

there are many other ways of  dealing with your problem.

i hope i was helpful to you

bye


"Eun" <gte521w@prism.gatech.edu> wrote in message
news:3f8c6a8e$1@newsgroups.borland.com...
> Hi.
>
> I have a file "test.txt" with data below;
> --------------------
> LB = 0.1500000
>
> OPP = 30.00000
>
> MAX = 40.00000
>
> ------------------------------
>
> I want to change the numbers and save the file.
>
> Can anyone please let me know what I should do?
>
> Thanks.
>
>
>
>

In <3f8c6a8e$1@newsgroups.borland.com> Eun wrote:

>  I have a file "test.txt" with data below;
>  --------------------
>  LB = 0.1500000
>  
>  OPP = 30.00000
>  
>  MAX = 40.00000
>  
>  ------------------------------
>  
>  I want to change the numbers and save the file.

Adrian provided one way of solving your problem (see
parallel response).  

However, if you are open to changing the file extension
from .txt to .properties, you could use the java.util.Properties
class to handle this very easily.


Paul Furbacher [TeamB]

  Save time, search the archives:
       http://info.borland.com/newsgroups/ngsearch.html
       
  Is it in Joi Ellis's Faq-O-Matic? 
       http://www.visi.com/~gyles19/fom-serve/cache/1.html
 
  Finally, please send responses to the newsgroup only.
  That means, do not send email directly to me.
  Thank you.

"Eun" <gte521w@prism.gatech.edu> schrieb im Newsbeitrag
news:3f8c6a8e$1@newsgroups.borland.com...
> Hi.
>
> I have a file "test.txt" with data below;
> --------------------
> LB = 0.1500000
>
> OPP = 30.00000
>
> MAX = 40.00000
>
> ------------------------------
>
> I want to change the numbers and save the file.
>
> Can anyone please let me know what I should do?
>

There are many different approaches available to handle this. Beside those
Adrian and Paul told you, you could for example read in and write out your
data also in a tab delimited format, as most spreadsheets and databases
would also support. Instead you could also write out and read in your data
in a well formed XML format etc. etc.

However, as Paul said, the easiest would really be to make use of Java's
Properties class to handle this and in case you don't like to have those
".properties" extensions, take one of those java based INI read/write file
examples and set it up in a way to work on your ".txt" extension. As an
example see:

http://www.codeguru.com/java/articles/655.shtml

http://www.geocities.com/Area51/9851/INIFiles.html

...and so on...

You can find a lot of similar and even more advanced such java based  INI
read/write examples on the internet.

-Valentino

I just got the job done.
Appreciate it.

- Eun