Dúvida Basica

package com.exemple.web;

import com.exemple.model.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

public class BeerSelect extends HttpServlet {

   public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
      
     response.setContentType("text/html");
     PrintWriter out = response.getWriter();

     out.println("Beer Selection Advice<br>");
     BeerExpert be = new BeerExpert();
     be.getBrands(request.getParameter("color"));
     out.println("<br>Cor da cerveja: " + be.getBrands(request.getParameter("color")));
  }
}

package com.exemple.model;

import java.util.*;

public class BeerExpert {
  
  public String getBrands(String color) {
     
     if (color.equals("amber")) 
         return "amber";
     else 
         return "skol";
     
  } 
}