Download a resource from a URL and save as a file in the current directory

gistfile1.java

/**
 * Download a resource from a URL and save as a file in the current directory.
 * (no overwrite, no timestamp checking, assumes URL has a sensible filename-like path)
 */
File grabRemoteUrlAsLocalFile(String remote) throws MalformedURLException, IOException {
  URL remoteUrl = new URL(remote);
  String localName = url2filename(remoteUrl);
  File localFile = new File(localName);
  Path localPath = localFile.toPath();
  if (!localFile.exists()) {
    try (InputStream in = remoteUrl.openStream()) {
      Files.copy(in, localPath);
    }
  }
  return localFile;
}

String url2filename(URL theUrl) {
  String path = theUrl.getPath();
  File file = new File(path);
  String name = file.getName();
  return name;
}