Java convert C#

public String execute() throws IOException {
        URL url = new URL(getTargetUrl());
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod(requestMethod);
        connection.setConnectTimeout(2000);
        connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        connection.setRequestProperty("Content-Length",
                Integer.toString(getRequestText().getBytes().length));
        connection.setRequestProperty("Content-Language", "en-US");
        connection.setUseCaches(false);
        connection.setDoInput(true);
        connection.setDoOutput(true);
        DataOutputStream wr = new DataOutputStream(
                connection.getOutputStream());
        wr.writeBytes(getRequestText());
        wr.flush();
        wr.close();
 
        InputStream is = connection.getInputStream();
        BufferedReader rd = new BufferedReader(new InputStreamReader(is));
        String line;
        StringBuilder response = new StringBuilder();
        while ((line = rd.readLine()) != null) {
            response.append(line);
            response.append('\n');
        }
        rd.close();
        RESPONSE = response.toString();
        connection.disconnect();
        return RESPONSE;
    }