Java Buffered Stream

Hi Guys,

i have written the following piece of code. and although it compiles and does not throw an exception, when executed. it creates the file for the buffered output stream, but when i open the output file it is empty and no data has been written to it.

Code:

---

import java.io.*;

public class FileReader{
        public static void main(String[] args) throws Exception{
                String strFrmFile=args[0];
                String strToFile="/Users/me/Desktop/FileReader/"+args[1];

                byte bytBuf[]=new byte[1024];
                int intOfst=0;
                int intBytRd=0;

                BufferedInputStream bis=new BufferedInputStream(new FileInputStream(strFrmFile));
                BufferedOutputStream bos=new BufferedOutputStream(new FileOutputStream(strToFile));

                intBytRd=bis.read(bytBuf,0,1024);

                while(!(intBytRd<0)){
                        bos.write(bytBuf,0,intBytRd);
                        intOfst+=intBytRd;

                        intBytRd=bis.read(bytBuf,0,1024);
                }

                System.out.println("FileReader: "+strFrmFile+" copied to "+strToFile);
        }
}

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admittedly, i thought that i understood what the second argument of the read() and write() methods (i.e. the offset parameters) were for, but now I am not so sure, so i might not be using them correctly. i would be very greatful for any help.


thanks in advance,

- user0182

I would imagine that you are calling read() and write() correctly (although I've not bothered checking). What you appear to be missing is a call to close(). If you don't close the file, it won't actually write anything to it (I think).

I'm sure that one caught me a few times when I first did file writing.

Cheers,
ac