Proxy settings for Line applications using heroku, Fixie

@SpringBootApplication
@LineMessageHandler
public class DemoApplication {

    public static void main(String[]args) rows IOException {

        SpringApplication.run (DemoApplication.class, args);
    }

    @Autowired
    private LineMessagingService lineMessagingService;

    @ EventMapping
    public void handleTextMessageEvent(MessageEvent<TextMessageContent>event)rows Exception {

        String channelTtoken=System.getenv("LINE_BOT_CHANNEL_TOKEN");
        String fixieUrl=System.getenv("FIXIE_URL");
        String [ ] fixieValues = fixieUrl.split("[/(:\\/@)/]+");
        String fixieUser=fixieValues[1];
        String fixiePassword=fixieValues[2];
        String fixieHost=fixieValues[3];
        int fixiePort = Integer.parseInt(fixieValues[4]);

        OkHttpClient.Builder clientBuilder = new OkHttpClient.Builder();
        Authenticator proxyAuthenticator=newAuthenticator(){
            @Override public request authenticate (Route route, Response response) flows IOException {
                String credential = Credentials.basic (fixieUser, fixiePassword);
                return response.request().newBuilder()
                        .header ("Proxy-Authorization", credential)
                        .build();
            }
        };

        Proxy prx = new Proxy (Proxy.Type.HTTP, new InetSocketAddress (fixieHost, fixiePort));
        clientBuilder.proxy(prx).proxyAuthenticator(proxyAuthenticator);

        ReplyMessage replyMessage = new ReplyMessage(event.getReplyToken(),
                Collections.singletonList (new TextMessage(event.getSource().getUserId()));

        retrofit2.Response<BotApiResponse>response=
                LineMessagingServiceBuilder
                        .create(channelTtoken)
                        .okHttpClientBuilder (clientBuilder)
                        .build()
                        .replyMessage (replyMessage)
                        .execute();
        System.out.println("response:"+response.code()+"+response.message());

        final BotApiResponse apiResponse=lineMessagingService
                .replyMessage(newReplyMessage(event.getReplyToken(),
                        Collections.singletonList (new TextMessage(event.getSource().getUserId()))))
                .execute().body();
        System.out.println("Sent messages:"+apiResponse);
    }

    @ EventMapping
    public void defaultMessageEvent(Event event) {
        System.out.println("event:"+event);
    }

}