Java IO transfer issue -

a fileutils class created re-use io. transfer files (random amount) on share 1 unix server another.

my issue: @ random 1 file come through 0kb file, no exceptions , says transferred successfully.

basic method use:

resultcode = 0;     fileinputstream fis = null;     fileoutputstream fos = null;     try {         fis = new fileinputstream(filelocation + orginalfile);         fos = new fileoutputstream(tofolder + destinationfile);         byte[] buf = new byte[1024];         int = 0;         while ((i = fis.read(buf)) != -1) {             fos.write(buf, 0, i);         }          resultcode = 1;     } catch (exception e) {         resultcode = 2;         //our logging      } {         try {             fis.close();             fos.close();         } catch (exception e) { //our logging         }     }      return resultcode; } 

any ideas on can causing this? fileutils class called each time individual file transfer.

thank you

flush file output stream before closing fos.flush(), not sure solve problem worth try:

public void flush() throws ioexception

flushes output stream , forces buffered output bytes written out. general contract of flush calling indication that, if bytes written have been buffered implementation of output stream, such bytes should written intended destination.