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Hi. I have recently started learning to program using Java, and I am
currently working on creating a counter. Right now I am working as an
application only, and would like to know how to get my program to open
a file (Already done, I think.) and get it to save the contents as an
integer, x. Any help would be greatly appreciated. Here is the source
code:

import java.io.*;

class counter {
public static void main(String[] args) throws IOException {
File inputFile = new File("counter.jvar");
File outputFile = new File("counter.jvar");

FileReader in = new FileReader(inputFile);
int x = in;
/* I know this(^^) line creates an error b/c of diff file types, but
how do I fix it? */
in.close();
int y = (x + 1);
System.out.println(y);
FileWriter out = new FileWriter(outputFile);
out.write(y);
out.close();
}
}

<> wrote in message
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> Hi. I have recently started learning to program using Java, and I am
> currently working on creating a counter. Right now I am working as an
> application only, and would like to know how to get my program to open
> a file (Already done, I think.) and get it to save the contents as an
> integer, x. Any help would be greatly appreciated. Here is the source
> code:
>
> import java.io.*;
>
> class counter {
> public static void main(String[] args) throws IOException {
> File inputFile = new File("counter.jvar");
> File outputFile = new File("counter.jvar");
>
> FileReader in = new FileReader(inputFile);
> int x = in;
> /* I know this(^^) line creates an error b/c of diff file types, but
> how do I fix it? */
> in.close();
> int y = (x + 1);
> System.out.println(y);
> FileWriter out = new FileWriter(outputFile);
> out.write(y);
> out.close();
> }
> }
>
You're better off using a FileInputStream and FileOutputStream for this.
The error is because you're saying the int x is a FileReader object which it
isn't - use the read() method instead. ie. int x = fileinputstream.read();

wrote:
> Hi. I have recently started learning to program using Java, and I am
> currently work
This

http://java.sun.com/docs/books/tutor.../io/index.html

should help you.

On 30 Sep 2005 21:03:27 -0700, wrote or quoted :

> Right now I am working as an
>application only, and would like to know how to get my program to open
>a file (Already done, I think.

see http://mindprod.com/applets/fileio.html
--
Canadian Mind Products, Roedy Green.
http://mindprod.com Again taking new Java programming contracts.

On Sat, 01 Oct 2005 04:33:15 GMT, "Bruce Lee"
<> wrote or quoted :

>You're better off using a FileInputStream and FileOutputStream for this.
>The error is because you're saying the int x is a FileReader object which it
>isn't - use the read() method instead. ie. int x = fileinputstream.read();
>

for character i/o, a Reader/Writer is correct. Using an
InputStream/OutputStream is deprecated for that purpose because of the
problems with encoding.

--
Canadian Mind Products, Roedy Green.
http://mindprod.com Again taking new Java programming contracts.