31. Converting primitive types to/from String

• The Integer and Double toString static methods convert the corresponding primitive types to a String:

  
      String counterString = Integer.toString(counter);
      String priceString = Double.toString(price);
  
  

• The opposite conversion of String objects to primitive types is also done using static methods:

  
      int quantity = Integer.parseInt(quantityString);
      double price = Double.parseDouble(priceString);