haskin / java-mod-3-json-lab

JSON Lab

Learning Goals

• Work with JSON files in Java

Instructions

Modify your previous lab (CSV Lab) by adding the ability to save the list of persons as JSON in addition to saving it as CSV.

Hints:

• To save as JSON, use the output from the printPersonListAsJSON() method and save it to file using the writeToFile() method.
• In order for the Jackson library to be able to create an instance of your Person class from its JSON representation, it needs to have a default constructor in the Person class, so simply add the following to your class: public Person() {}.
• To read from JSON, use the following method from the Jackson library:

  List<Person> restoredPersons = Arrays.asList(new ObjectMapper().readValue(new File(PERSON_LIST_JSON_FILENAME), Person[].class));