title: getting an error "cannot find symbol" while Capturing the contents of a url and storing it into a string array
body: <p>I'm learning about servlets in java and I'm trying to capture a URL content and store it into a string array. Bellow is my code that I put together following some tutorials that does not seem to work servlet environment (This is the first part of an exercise that I'm trying to do). </p>
  
  <p>I'm getting the error at this line:</p>
  
  <pre><code>cookies.add(line);
  </code></pre>
  
  <p>Here is the complete code:</p>
  
  <pre><code>//package fortune;
  
  import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStreamReader;
  import java.net.URL;
  import java.util.ArrayList;
  import java.util.Random;
  import javax.servlet.ServletException;
  import javax.servlet.annotation.WebServlet;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import static java.util.Arrays.*;
  
  @WebServlet(name = "FortuneServlet", urlPatterns = {"/"})
  public class FortuneServlet extends HttpServlet {
      private String [] cookies = null;
      //ArrayList&lt;String[]&gt; cookies = new ArrayList&lt;String[]&gt;();
  
      public void geturl(String[] args) {
  
          try 
          {
           URL url = new URL(" http://fortunes.cat-v.org/openbsd/");
           // read text returned by server
               BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
           String line = in.readLine();
  
           while((line = in.readLine()) != null)
           {
                cookies.add(line);
                line = in.readLine();
           }
              in.close();
  
      }
          catch (java.net.MalformedURLException e) {
              System.out.println("Malformed URL: " + e.getMessage());
          }
          catch (IOException e) {
              System.out.println("I/O Error: " + e.getMessage());
          }
      }
      public void init() throws ServletException {
          // Add your own code here!
          // 1) Open the URL
          // 2) Get the contents
          // 3) Extract the cookie texts to an array
  
  
      }
  
      @Override
      protected void doGet(
          HttpServletRequest request, 
          HttpServletResponse response)
              throws ServletException, IOException {
  
          response.setCharacterEncoding("UTF-8");
          response.setContentType("text/plain");
          if (cookies != null) {
              response.getWriter().println(
                  cookies[new Random().nextInt(cookies.length)]
  
              );
          } else {
              response.getWriter().println("No luck!");
          }
      }
  }
  </code></pre>