58. Code that stores strings in an untyped array list

• 
  // create an untyped array list
  ArrayList products = new ArrayList();
  
  // add three productss
  products.add(new Product("dctp", "Duct Tape", 4.95));
  products.add(new Product("blwr", "Bailing Wire", 14.95));
  products.add(new Product("cgum", "Chewing Gum", 0.95));
  
  // print the array list
  for (int i = 0; i < products.size(); i++)
  {
      Product p = (Product)products.get(i);
      System.out.println(p.getCode() + "\t" + 
          p.getDescription() + "\t" +
          p.getFormattedPrice());
  }
  
  

  The compiler warning generated by the code:

  
  Note: C:\murach\java\ch12_tester\src\Main.java uses 
  unchecked or unsafe operations.
  
  Note: Recompile with -Xlint:unchecked for details.
  
  

  Resulting output

  
  dctp    Duct Tape       $4.95
  blwr    Bailing Wire    $14.95
  cgum    Chewing Gum     $0.95