Downloading Facebook profile picture

gistfile1.java

private static final String PROFILE_PICTURE_URL = "https://graph.facebook.com/%s/picture?type=large&access_token=%s";

private String downloadFacebookProfilePicture(String uid, String accessToken, String username) throws MalformedURLException, IOException {
	//Get the picture url
	HttpURLConnection.setFollowRedirects(false);
	String profilePictureUrlString = new URL(String.format(PROFILE_PICTURE_URL, uid, accessToken)).openConnection().getHeaderField(
			"location");

	//Set up temp location for picture
	String fileExtension = StringUtils.substring(profilePictureUrlString,
			StringUtils.lastIndexOf(profilePictureUrlString, ".") + 1);
	
	String tempFilePath = (new StringBuilder(String.valueOf(System
			.getProperty("java.io.tmpdir"))))
			.append(StringUtils.replace(username, ".", "_")).append(".")
			.append(fileExtension).toString();

	String exportUrl = profilePictureUrlString;
		//Download file to temp  location
		downloadFile(exportUrl, tempFilePath);

	return tempFilePath;
}

private void downloadFile(String exportUrl, String filepath)
		throws IOException, MalformedURLException {
	InputStream inStream = new URL(exportUrl).openStream();
	FileOutputStream outStream = new FileOutputStream(filepath);
	copyStreams(inStream, outStream);
}

private void copyStreams(InputStream inStream, OutputStream outStream)
		throws IOException {
	try {
		int c;
		while ((c = inStream.read()) != -1) {
			outStream.write(c);
		}
	} finally {
		if (inStream != null) {
			inStream.close();
		}
		if (outStream != null) {
			outStream.flush();
			outStream.close();
		}
	}
}