11. Iteratort continued

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.Iterator;
import java.util.LinkedList;
 
 
public class UrlLibrary implements Iterable<String> {
    private LinkedList<String> urls = new LinkedList<String>();
 
    private class UrlIterator implements Iterator<String> {
         
        private int index = 0;
 
        @Override
        public boolean hasNext() {
            return index < urls.size();
        }
 
        @Override
        public String next() {
             
            StringBuilder sb = new StringBuilder();
             
            try {
                URL url = new URL(urls.get(index));
                 
                BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));
                 
                String line = null;
                 
                while( (line = br.readLine()) != null) {
                    sb.append(line);
                    sb.append("n");
                }
                 
                br.close();
                 
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
             
            index++;
             
            return sb.toString();
        }
 
        @Override
        public void remove() {
            urls.remove(index);
        }
         
    }
     
    public UrlLibrary() {
        urls.add("http://www.caveofprogramming.com");
        urls.add("http://www.facebook.com/caveofprogramming");
        urls.add("http://news.bbc.co.uk");
    }
 
    @Override
    public Iterator<String> iterator() {
        return new UrlIterator();
    }
 
    /*
    @Override
    public Iterator<String> iterator() {
        return urls.iterator();
    }
    */
     
     
}