code: public float getQuote(String stock_name) throws Exception {
          System.out.print("Getting quote for " + stock_name + ": ");
          Float retval=stocks.get(stock_name);
          if(retval == null) {
              System.out.println("not found");
              throw new Exception("Stock " + stock_name + " not found");
          }
          System.out.println(retval.floatValue());
          return retval;
      }
docs: /* Quote methods: