• Spend some time working on your project.

Now that we have learned a little more about file IO in Java, it's time to apply this new knowledge to our projects!

Provide an option for command-line arguments to insert a list of airports from a file. Consider the following instructions:

• Modify the AirportReservationDriver class.
  • Write a conditional that looks to see if a file was passed in via the command-line.
  • If a file exists, read the file in.
    • Create a new method in the driver class to read in a file.
    • The file can be formatted however you want to format it. It is suggested you use either a CSV or a JSON format though, so you can easily map it back to the Airport class.
    • The list of airports should consist of the following fields:
      • Airport code.
      • Airport name.
      • Airport location.
      • Set of cities.
      • Example:
        • Airport Code: DEN
        • Airport Name: Denver International Airport.
        • Location: Denver, Colorado.
        • Some of the cities with services from the Denver International Airport:
          • Durango, Colorado.
          • Baltimore, Maryland.
          • Portland, Oregon.
          • Louisville, Kentucky.
          • Paris, France.
    • The new method that reads in the file should return a list of airports.
    • Don't forget to validate the airport code is in the proper format of three uppercase letters.
  • If the file does not exist or is not passed in via the command-line, proceed as normal.
• Write the unit tests to test the reading in of a file.
• Tips:
  • Refer back to the labs in this past section as needed.
  • Refer back to the unit testing section to help you write the unit tests.
  • Refer to the Java documentation as needed. Below are some resources that may help you.

• Java 11 File
• Java 11 FileWriter
• Java try-with-resources
• Java 11 Scanner
• Java 11 BufferedWriter
• Java 11 FileReader
• Java 11 BufferedReader
• Java 11 Path
• Java 11 Paths
• Java 11 Files
• Jackson-Databind ObjectMapper