This program lets you add an itenary / list of cities and distance from original point by taking input from the users.
A message is displayed prompting the users to add names of cities and distance.
The user can choose to move Forward or Backward between cities. Starting from the origin city.
At the end of the List a message is displayed to inform user they are at the end of the list.
This program uses ArrayList class (A resizable array which can be found in the java.util package) and also utilizes the java list iterator to trasvers the objects in the ArrayList.