Code:
private void getResponse(LoginBean object) {
    String auth = object.getUsername() + ":" + object.getPassword();
    byte[] encodedAuth = Base64.encodeBase64(auth.getBytes(Charset
            .forName("US-ASCII")));
    String authHeader = "Basic " + new String(encodedAuth);

    RestTemplate restTemplate = new RestTemplate();
    MultiValueMap<String, String> body
...