Creating file

Question

Hi,
This is the program i have,
import java.io.*;
import java.util.*;
import java.util.Properties;
import java.util.Hashtable;
public class Test
public static void main(String[] args)
Runtime r = Runtime.getRuntime();
Process p = null;
DataInputStream s1 = null;
StringBuffer buf = new StringBuffer();
try
p = r.exec("java -jar xlrd.jar -csv myexcel.xls");
catch(Exception e){}
The problem is,
java -jar xlrd.jar -csv myexcel.xls returns the value on the console and i want that ouput to go to file or string buffer
when i say java -jar xlrd.jar -csv myexcel.xls >> file_name.txt on the command prompt ,file has been created. But when i use the same command to the following statement " p = r.exec("java -jar xlrd.jar -csv myexcel.xls >> file_name.txt") " there was no file created. I could not track the problem.
Thanks in Advance.
Regards,
Raja

Answer 1

Not really sure, but I don't think you can redirect the output of a process. However, you can create a pipe to do it.
p = r.exec("java -jar xlrd.jar -csv myexcel.xls");
in = new PipedInputStream((PipedOutputStream)p.getOutputStream());
int c = 0;
out = new FileOutputStream(new File("out.txt"));
while ((c = in.read()) != -1) {
    out.write(c);
}