String query = "select * FROM Table";
int port = 8080;
String user = "user";
String password = "passwd";
String jdbcAvaticaURL = "jdbc:avatica:remote:url=http://localhost:"+port+";authentication=BASIC;serialization=JSON";
Connection connection = DriverManager.getConnection(jdbcAvaticaURL, user, password); // ,info);

executeQuery(connection,query);

connection.close();

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    request.getParameter("user"); // returns NULL
    Enumeration<String> params = request.getParameterNames(); // Empty Collection
    response.setContentType("application/json;charset=utf-8");
    response.setStatus(HttpServletResponse.SC_OK);
    // DO THINGS
}