Workshop – Array & String

You are going to make an application that stores names in a String array with the following format: “Erik Svensson” -> “[first name][whitespace][last name]”.

You may add any number of private helper methods. Remember to keep it simple with focused methods during the workshop.

You may not use Collections (List, Set, Map…etc.), Stream API, or any kind of helper besides the Arrays class when doing this workshop.

Part 1

1. Create a new class called NameRepository.

2. Inside NameRepository, create a private static empty array of String called names.

3. Define the following methods:

   public static int getSize() 

   • Returns the number of elements in the array.

   public static void setNames(String[] names)

   • Sets the private static array. This should replace all existing names.

   public static void clear() 

   • Should completely empty the array.

   public static String[] findAll()

   • Returns all names in a new array.

Part 2

1. Define the following methods in NameRepository:

   public static String find(final String fullName)

   • Returns the name if found and null if not found.

   public static boolean add(final String fullName)

   • Should add a new name to the array. Returns true when the name was added and false when the array contains the name.

Part 3

1. Define the following methods in NameRepository:

   public static String[] findByFirstName(final String firstName)

   • Searches the array trying to find all names that have the passed-in first name. Returns a String array containing all matches.

   public static String[] findByLastName(final String lastName)

   • Searches the array trying to find all names that have the passed-in last name. Returns a String array containing all matches.

   public static boolean update(final String original, final String updatedName)

   • Should find a name and replace it with the new fullName if available. Returns true if the name was found and updated with the new name. Returns false if the name could not be updated because the name wasn’t found or the name was found but an existing name matching the updatedName already exists.

Part 4

1. Define the following method in NameRepository:

   public static boolean remove(final String fullName)

   • Should remove a name from the array. Returns true if the name was removed and false if the name was not removed for some reason.

Lin to Access the Workshop_ArrayPart1.pdf
Lin to Access the Workshop_ArrayPart2.pdf
Lin to Access the Workshop_ArrayPart3.pdf
Lin to Access the Workshop_ArrayPart4.pdf