Error reading Remote file when the connection is slow

Question

I have a program that reads a file from a remote server. The file is an xml file.
This uses URL inputstream.
This works just fine but when the xml that it reads grow in size, the content of the file is not completely sent to the variable string.
I have come to a conclusion that slow connection to the server could somehow cause this. The error is intermittent. Sometimes it works, sometimes it doesn't.
I hope you guys could help me tune this code or if you have suggestions like other ways to read a remote file. Which will work even if the file grows bigger.
Thanks
public String readRemoteFile(String fName)
try
boolean bolContinue = true;
URL tUrl = new URL(fName); //create a URL object with the server source file
//Logger.log("Getting filesize : " + fName);
InputStream is = tUrl.openStream();
String strFileSize = "";
StringBuffer sbXML = new StringBuffer();
byte[] b1 = new byte[10];
               int intBytesToDownload = 0;
int i = is.read(b1);
strFileSize = new String(b1, 0, i);
//Logger.log(fName + " --- " + strFileSize);
try
intBytesToDownload = Integer.parseInt(strFileSize);
catch (NumberFormatException nfe)
Logger.log("Could not read the file : " + fName);
return null;
int bytesReadInTrip = intBytesToDownload;
int bXMLLocation = 0;
while (bytesReadInTrip > 0)
bytesReadInTrip = 0;
bolContinue = true;
//System.out.println(strFileURLPath);
tUrl = new URL(fName + "&fileOffset=" + bXMLLocation);
//Logger.log("reading file1 : " + fName + "&fileOffset=" + bXMLLocation);
is = tUrl.openStream(); //get Input stream of the server file.
//continue download till continuation flag is set i.e. input stream
// is available.
while (bolContinue)
          byte[] bXML = new byte[intBytesToDownload];
i = is.read(bXML);
//Logger.log("i " + i);
if (i > 0)
bXMLLocation += i;
bytesReadInTrip += i;
String strTmpXML = new String(bXML,0,i);
     sbXML.append(strTmpXML);
else
bolContinue = false;
is.close(); //close the input stream of the input file.
//Logger.log("bytesReadInTrip : " + bytesReadInTrip);
//Logger.log("Read file : "+ sbXML.toString());
return sbXML.toString();
catch (Exception e)
Logger.log("Exception while reading the file : " + fName);
return null;
}

Answer 1

well looks that ur run() method is being called more then one time (..)
why dont u try file method exists() before writing it to ensure that it is not written previously