problem of FILE

hi all,

i want to know if a file exists, here is my code :

------------------------
File dd = new File("G:/SQL.LOG");
boolean f = dd.isFile();
out.println("dan = " + f);
------------------------------
(the file sql.log exists)
i can see :" dan = true"

that's logic

but when i change the code:

------------------------------
File dd = new File("G:/act_tma/test.log");
out.println(rep_tableau + nom_tableau);
boolean f = dd.isFile();
out.println("dan = " + f);
-----------------------------
(the file test.log exists)
i can see: "dan = false"

what is not logic...

have you an idea???

PS : G:/ is connected to a network

it's the same thing if i put the method exists() instead of isFile()

why???

f.exists() verify if the file indicated by this path exists and
f.isFile() verify if the file exists and is a norma file (is not a directory and satisfy other conditions which dependts of your system)
See Java API documentation

the path exists but when i use the method exists(), it returns always false...

normal I mean (I ate an "l")
I don't really know what exactly means "normal file" but I think that a "system file" is not a regular file for example. I hope I don't mistake !

Cristian

I think beacause this file with ".log" extension isn't a regular file ...

when i use a .xls, it's the same thing... :(

Sorry I was wrong, but I think this is a network problem ...

try for the same files but local, on your machine

it works on local
but it works also on the root of G: which is on the network...

Maybe you don't have sufficient rights to those files on the network

but i can open those files "manually"

Yes, but in order to access them from an Java programme I think you should have full acces to the path where "they" are.

do you know a method to copy it on the local machine?
perhaps with 'cp' of MSDOS console?

copy source destination (for MS-DOS)
Ctrl+C and Ctrl+V in your destination path .... (other OS)

lol i know that, but what the command in java to copy a file?

There is no command for copying files, you need to create a new empty file local, and copy from that file on netwotk into new file created...

but how do you copy the contents of an excel file???

An example should be:
import java.io.*;
public class Copy {
public static void main(String[] args) throws IOException {

FileReader in = new FileReader("in.txt");
FileWriter out = new FileWriter("out.txt");

int c;
while ((c = in.read()) != -1)
out.write(c);

in.close();
out.close();
}
}
which copy character with caracter (it works!)
Or :
BufferedWriter out = new BufferedWriter(
new FileWriter("out.dat"), 1024)
for(int i=0; i<1024; i++)
out.write(i);
out.flush();
for writing to a file and using BufferedReade(new FileReader(...)) for reading from a file