src/main/java/com/uploadcare/upload/UrlUploader.java
public File upload(int pollingInterval) throws UploadFailureException {
        RequestHelper requestHelper = client.getRequestHelper();
        URI uploadUrl = Urls.uploadFromUrl(sourceUrl, client.getPublicKey(),store);
        String token = requestHelper.executeQuery(new HttpGet(uploadUrl), false, UploadFromUrlData.class).token;
        URI statusUrl = Urls.uploadFromUrlStatus(token);
        while (true) {
            sleep(pollingInterval);
            HttpGet request = new HttpGet(statusUrl);
            UploadFromUrlStatusData data = requestHelper.executeQuery(request, false, UploadFromUrlStatusData.class);
            if (data.status.equals("success")) {
                return client.getFile(data.fileId);
            } else if (data.status.equals("error") || data.status.equals("failed")) {
                throw new UploadFailureException();
            }
        }
    }
public File upload(int pollingInterval) throws UploadFailureException {
        RequestHelper requestHelper = client.getRequestHelper();
        URI uploadUrl = Urls.uploadFromUrl(sourceUrl, client.getPublicKey(),store);
        String token = requestHelper.executeQuery(new HttpGet(uploadUrl), false, UploadFromUrlData.class).token;
        URI statusUrl = Urls.uploadFromUrlStatus(token);
        while (true) {
            sleep(pollingInterval);
            HttpGet request = new HttpGet(statusUrl);
            UploadFromUrlStatusData data = requestHelper.executeQuery(request, false, UploadFromUrlStatusData.class);
            if (data.status.equals("success")) {
                return client.getFile(data.fileId);
            } else if (data.status.equals("error") || data.status.equals("failed")) {
                throw new UploadFailureException();
            }
        }
    }
Synchronously uploads the file to Uploadcare.

The calling thread will be busy until the upload is finished.

@param pollingInterval Progress polling interval in ms
@return An Uploadcare file
@throws UploadFailureException