Can't download .GZ file - incorrect file type?

Question

Thank you for helping me. Using the code below, I am trying to access a log file from a site (log.gz) and download it to my hard drive to expand and analyze locally. When I try to expand the file, the message says that it does not recognize the file type. I suspect that it is adding in errant bits of data. Is there some way to make it keep the data structure intact?
Thanks,
Greg
import java.net.*;
import java.io.*;
import java.util.Date;
public class SaveWebFile{
public static void main(String[] args) {
     String username = "xxxx";
     String password = "xxxxx";
String authorization = username + ":" + password;
sun.misc.BASE64Encoder enCoder = new sun.misc.BASE64Encoder();
String encodedAuthorization = "Basic " + enCoder.encode(authorization.getBytes());
try{
     URL url = new URL("http://www.test.com/logs/dailylog.gz");
     HttpURLConnection con = (HttpURLConnection)url.openConnection();
     con.setRequestProperty("Authorization", encodedAuthorization);
     InputStreamReader in = new InputStreamReader (con.getInputStream());
     OutputStream out = new FileOutputStream( "c:\\logs\dailylog.gz" );
     int b;
     while( (b = in.read()) != -1) out.write( (byte)b );
     in.close();
     out.close();
     } catch (MalformedURLException e) {
     System.out.println (" is not a valid URL.");
     System.exit(1);
     } catch (IOException e) {
     System.out.println ("Unable to connect");
     System.exit(1);
}

Answer 1

Does this fix it?
BufferedInputStream in = new BufferedInputStream(con.getInputStream());
BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream("log.gz"));
final int NUM_BYTES = 32768;
int numBytesRead = 0;
byte[] buf = new byte[NUM_BYTES];
while( (numBytesRead = in.read(buf, 0, NUM_BYTES)) != -1)
  out.write(buf, 0, numBytesRead);
  out.flush();
out.close();
in.close();