Java How to Program, Early Objects, 11th Edition

... scanner.nextInt(); // get first input integer
48                  BitRepresentation.display(first);
49                  second = scanner.nextInt(); // get second input integer
50                  BitRepresentation.display(second);
51                  result = first ^ second; // perform bitwise exclusive OR
52                  System.out.printf(
53                     "\n\n%d ^ %d = %d", first, second, result);
54                  BitRepresentation.display(result);
55                  break;
56               case 4: // Complement
57                  System.out.print("Please enter one integer:");
58                  first = scanner.nextInt(); // get input integer
59                  BitRepresentation.display(first);
60                  result = ~first; // perform bitwise complement on first
61                  System.out.printf("\n\n~%d = %d", first, result);
62                  BitRepresentation.display(result);
63                  break;
64               case 5: default:
65                  System.exit(0); // exit application
66            }
67         }
68 } ...