Post_95.2.java

# Factory class

public class HandlerFactory {
    private Request request;
    private ResponseCodeBuilder responseCodeBuilder;

    public HandlerFactory(Request request) {
        this.request = request;
        responseCodeBuilder = new ResponseCodeBuilder(request);
    }

    public RequestHandler createMethodHandler() {
        String requestMethod = request.getMethod();

        switch (requestMethod) {
            case "GET":
                RequestHandler gethandler = new GetHandler(responseCodeBuilder);
                return gethandler;
            case "POST":
                RequestHandler postHandler = new PostHandler(responseCodeBuilder);
                return postHandler;
            case "PUT":
                RequestHandler putHandler = new PutHandler(responseCodeBuilder);
                return putHandler;
            case "OPTIONS":
                RequestHandler optionsHandler = new OptionsHandler(responseCodeBuilder);
                return optionsHandler;

        }
        RequestHandler gethandler = new GetHandler(responseCodeBuilder);
        return gethandler;
    }
}

# Interface

public interface RequestHandler {
 		 
    public String handle(Request request);
}

# Concrete GET class

public class GetHandler implements RequestHandler {
    private ResponseCodeBuilder responseCodeBuilder;

    public GetHandler(ResponseCodeBuilder responseCodeBuilder) {
        this.responseCodeBuilder = responseCodeBuilder;
    }

    @Override
    public String handle(Request request) {
       return getResponse(request);
    }

    private String getResponse(Request request) {
        if (request.getPath().equals("/")) {
            return responseCodeBuilder.createValidResponse();
        }
        return responseCodeBuilder.returnFourOhFour();
    }
}