Create an Author class and populate that for each author. So it has an Id, Firstname, Lastname.
Hold an array of authors.
Java Code:
Author[] authors = {new Author(1, "firstname", "lastname"), new Author(1, "firstname", "lastname")};
Actually, how are you getting the authors? I'm assuming there (based on your example) it's a hardcoded array, but if it's actually from a file then I'd suggest filling a List<Author> while reading the rows.