Reading a remote file using Java

Question

I am looking for an easy way to get files that are situated on a remote server. For this I created a local ftp server on my Windows XP, and now I am trying to give my test a

Answer 1

Reading binary file through http and saving it into local file (taken from here):

URL u = new URL("http://www.java2s.com/binary.dat");
URLConnection uc = u.openConnection();
String contentType = uc.getContentType();
int contentLength = uc.getContentLength();
if (contentType.startsWith("text/") || contentLength == -1) {
  throw new IOException("This is not a binary file.");
}
InputStream raw = uc.getInputStream();
InputStream in = new BufferedInputStream(raw);
byte[] data = new byte[contentLength];
int bytesRead = 0;
int offset = 0;
while (offset < contentLength) {
  bytesRead = in.read(data, offset, data.length - offset);
  if (bytesRead == -1)
    break;
  offset += bytesRead;
}
in.close();

if (offset != contentLength) {
  throw new IOException("Only read " + offset + " bytes; Expected " + contentLength + " bytes");
}

String filename = u.getFile().substring(filename.lastIndexOf('/') + 1);
FileOutputStream out = new FileOutputStream(filename);
out.write(data);
out.flush();
out.close();