18. DataInputStream example: reading binary file

• Code that reads Book objects from a binary file

  
      DataInputStream in =
          new DataInputStream(
          new BufferedInputStream(
          new FileInputStream("myfile.dat")));
  
      while (in.available() > 0)
      {
          // read book data from a file
          String code = in.readUTF();
          String description = in.readUTF();
          double price = in.readDouble();
  
          // create the Book object from its data
          Book p = new Book(code, description, price);
      }
  
      // close the input stream
      in.close();