Question

A pmc has contacted you to help write code to control the security checkpoints for their company. You must create a checkpoint class with hidden attributes (Authorized, guest, Unauthorized), two constructors (a default that sets all access level to false and an overloaded that sets authorized and unauthorized to false and guest to true for testing purposes) and a method that changes the access levell to the next in the sequence(authorized - guest - unauthorized)

In java

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

// CheckPoint.java

public class CheckPoint {

      private boolean authorized;

      private boolean guest;

      private boolean unauthorized;

      // default constructor that sets all levels to false

      public CheckPoint() {

            authorized = false;

            guest = false;

            unauthorized = false;

      }

      // overloaded constructor that sets authorized and unauthorized to false and

      // guest to true/false (depends upon the given boolean value)

      public CheckPoint(boolean guest) {

            authorized = false;

            unauthorized = false;

            // if you want to make guest true always, change the below statement to

            // this.guest=true

            this.guest = guest;

      }

      // method to advance the access level to next in the sequence (authorized -

      // guest - unauthorized)

      public void changeToNextLevel() {

            // if the user is authorized, changing to guest

            if (authorized) {

                  authorized = false;

                  guest = true;

                  unauthorized = false;

            }

            // if the user is guest, changing to unauthorized

            else if (guest) {

                  authorized = false;

                  guest = false;

                  unauthorized = true;

            }

            // if the user is uauthorized or if all three values are false, changing

            // to authorized

            else {

                  authorized = true;

                  guest = false;

                  unauthorized = false;

            }

      }

      // getter methods for access levels

      public boolean isAuthorized() {

            return authorized;

      }

      public boolean isGuest() {

            return guest;

      }

      public boolean isUnauthorized() {

            return unauthorized;

      }

}