Sem1 Snipets

 while (sc.hasNextLine())

     {

       String temp = sc.nextLine();

       if (temp.equals(""))

       {

         // no material in this stall, add a null entry

         spaces.add(null);

       }

       else

       {  

         // String method split splits this string based on the

         // specified token and returns an array of individual substrings

         String[] tokens = temp.split(",");  

         String name = tokens[0];

         int  weight = Integer.parseInt(tokens[1]);

         // add the material to the array list

         spaces.add(new material(name, weight));

       }

     }