I need to translate java code to delphi

// Set your API key: remember to change this to your live API key in production
    String apiKeyUserName = "your api username";
    String apiKeyPassword = "your api password";

    // Set the query params
    DefaultHttpClient httpclient = new DefaultHttpClient();

    List<NameValuePair> params = new ArrayList<NameValuePair>();
    params.add(new BasicNameValuePair("fromPostcode", "2000"));
    params.add(new BasicNameValuePair("toPostcode", "3000"));
    params.add(new BasicNameValuePair("networkId", "01"));
    params.add(new BasicNameValuePair("lodgementDate", "2013-08-01"));
    String query = URLEncodedUtils.format(params, "UTF-8");

    String urlPrefix = "api.auspost.com.au";
    String validateURL = "https://" + urlPrefix + "/DeliveryDates.xml?";

    HttpGet httpGet = new HttpGet(validateURL + query);
    httpGet.addHeader("Cookie", "OBBasicAuth=fromDialog");
    httpGet.addHeader(BasicScheme.authenticate(
        new UsernamePasswordCredentials(apiKeyUserName, apiKeyPassword),
        "US-ASCII",false));

HttpResponse response = httpclient.execute(httpGet);

procedure RequestDeliveryDate;
var
  IdHTTP: TIdHTTP;
  LHandler: TIdSSLIOHandlerSocketOpenSSL;
  lResponse: String;
  requestURL: String;
begin
  IdHTTP := TIdHTTP.Create();
  IdHTTP.Request.BasicAuthentication := True;
  IdHTTP.Request.Username := 'your api username';
  IdHTTP.Request.Password := 'your api password';
  IdHTTP.Request.CharSet := 'utf-8';

  LHandler := TIdSSLIOHandlerSocketOpenSSL.Create();
  IdHTTP.IOHandler := LHandler;

  requestURL := 'https://api.auspost.com.au/DeliveryDates.xml?fromPostcode=2000' +
                                                            '&toPostcode=3000' +
                                                            '&networkId=01' +
                                                            '&lodgementDate=2018-02-23' +
                                                            '&numberOfDates=01';
  screen.Cursor := crHourGlass;
  try
    lResponse := IdHTTP.Get(requestURL);
    screen.Cursor := crDefault;
  except
    on E: Exception do
    begin
      screen.Cursor := crDefault;
      ShowMessage(E.Message);
    end;
  end;
  IdHTTP.Free;
end;