Complete the implementations of various classes in a Flight Management System. Read the API for FlightManagementSystem carefully, the API of this lab is available under doc folder in the Java project folder (doc!index.html). Some example tests are given to you in the Tester class. You are required to write (at least three) additional tests to further ensure the correctness of your Flight Management implementations. We consider a database that stores information about passengers and flights. Each passenger record (e.g., String name, double TicketAmount, int flightID) can be uniquely identified by a String ID (e.g., e1), whereas each flight record (e.g., String airline and String flight 2 for flight name and airline name, respectively ) can be uniquely identified by an integer id (e.g., 2000). You must implement all methods in the FlightManagementSystem by manipulating the two attributes passengers and flights, each of which declared as a HashMap. class FlightManagementSystem f HashMap flights; HashMap passengers; /* All methods must be implemented via flights and passengers */ g Override the compareTo and equal methods in the PassengerInfo class. Override the equals method in the FlightInfo class.For simplicity, you can assume that a passenger cannot be added in multiple flights. For this question, you are required to submit Java files such as FlightInfo, PassengerInfo, FlightManagementSystem, Tester in your Eclipse project. Note that the exception classes are available in the project folder. package bookStore; /** * A class representing a book store that has an * owner . A book store owns a collection (or possibly * collections) of books, but does not own the books themselves * . * *

* Only the owner of the book store is able to sell books from the book store. * The book store does NOT own its owner . *

*/ import java.util.*; public class BookStore { /* * YOU NEED A FIELD HERE TO HOLD THE Book OF THIS BookStore */ private TreeMap books; private BookStoreOwner owner; /** * Initializes this book store so that it has the specified owner and no * books. * * @param owner the owner of this book store */ public BookStore(BookStoreOwner owner) { // COMPLETE THIS } /** * Initializes this book store by copying another book store. This book store will * have the same owner and the same number and type of books as the other * book store. * * @param other the book store to copy */ public BookStore(BookStore other) { // COMPLETE THIS } /** * Returns the owner of this book store. * *

* This method is present only for testing purposes. Returning the owner of this * book store allows any user to sell books from the book store (because any * user can become the owner of this book store)! * * @return the owner of this book store */ public BookStoreOwner getOwner() { // ALREADY IMPLEMENTED; DO NOT MODIFY return this.owner; } /** * Allows the current owner of this book store to give this book store to a new * owner. * * @param currentOwner the current owner of this book store * @param newOwner the new owner of this book store * @throws IllegalArgumentException if currentOwner reference is not the reference of the * current owner of this book store */ public void changeOwner(BookStoreOwner currentOwner, BookStoreOwner newOwner) { // COMPLETE THIS } /** * Adds the specified books to this book store. * * @param books a list of books to add to this book store */ public void add(List books) { // COMPLETE THIS } /** * Returns true if this book store contains the specified book, and false * otherwise. * * @param book a book * @return true if this book store contains the specified book, and false * otherwise */ public boolean contains(Book book) { // COMPLETE THIS } /** * Allows the owner of this book store to sell a single book equal to the * specified book from this book store. * *

* If the specified user is not equal to the owner of this book store, then the * book is not sold from this book store, and null is returned. * * @param user the person trying to sell the book * @param book a book * @return a book equal to the specified book from this book store, or null * if user is not the owner of this book store @pre. the book store * contains a book equal to the specified book */ public Book sellingsingleBook(BookStoreOwner user, Book book) { // COMPLETE THIS } /** * Allows the owner of this book store to sell the smallest number of books * whose total price value in dollars is equal or less than to the specified * price value in dollars. Try from the most expensive book and you may want * to use descendingKeySet() method. * *

* Returns the empty list if the specified user is not equal to the owner of * this book store. *

* * @param user the person trying to sell books from this book store * @param pricevalue a value in dollars * @return the smallest number of books whose total price value in dollars is * equal to the specified value in dollars from this book store @pre. the * book store contains a group of books whose total price value is * equal to specified value */ public List sellingBooks(BookStoreOwner user, int pricevalue) { // COMPLETE THIS package bookStore; import static org.junit.Assert.*; import java.lang.reflect.Field; import java.lang.reflect.Modifier; import java.util.*; import org.junit.Test; import org.junit.rules.Timeout; import org.junit.runners.MethodSorters; import org.junit.FixMethodOrder; import org.junit.Rule; @FixMethodOrder(MethodSorters.NAME_ASCENDING) public class Testerv3 { @Rule public Timeout globalTimeout = Timeout.seconds(1); @Test public void test01_staticFields() { try { List fields = Arrays.asList(BookStore.class.getDeclaredFields()); int nStatic = 0; for (Field f : fields) { int mod = f.getModifiers(); if (Modifier.isStatic(mod)) { nStatic++; } } assertTrue("there should be no static fields", nStatic == 0); } catch (Exception x) { fail("exception occurred trying to get the fields of this class"); } } @Test public void test02a_ctor() { BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); assertEquals("ctor set the wrong BookStoreOwner", w, b.getOwner()); } @Test public void test03a_copyCtor() { BookStoreOwner w = new BookStoreOwner("OwnerC"); BookStore b = new BookStore(w); BookStore c = new BookStore(b); assertEquals("copy ctor set the wrong owner", w, c.getOwner()); } //changeOwner @Test(expected = IllegalArgumentException.class) public void test04a_changeOwner() { BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); BookStoreOwner x = new BookStoreOwner("OwnerB"); b.changeOwner(x, x); } @Test public void test04b_changeOwner() { BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); BookStoreOwner x = new BookStoreOwner("OwnerB"); b.changeOwner(w, x); assertEquals("changeOwner failed to set the correct owner", x, b.getOwner()); } //contains @Test public void test06a_contains() { BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); Book b1= new Book("ABC",2018, 36); assertFalse("contains returned true for an empty Bookstore!", b.contains(b1)); } @Test public void test06b_contains() { List books = new ArrayList(); Book b1= new Book("Java 1",2010, 160); books.add(b1); Book b2= new Book("Signals and Systems",2011, 260); books.add(b2); Book b3= new Book("Optical Communication",2011, 30); books.add(b3); Book b4= new Book("5G",2010, 10); books.add(b4); BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); b.add(books); assertTrue("contains returned false for a BookStore with every book", b.contains(b1)); assertTrue("contains returned false for a BookStore with every book", b.contains(b2)); assertTrue("contains returned false for a BookStore with every book", b.contains(b3)); assertTrue("contains returned false for a BookStore with every book", b.contains(b4)); } @Test public void test06c_contains() { List books = new ArrayList(); Book b1= new Book("Java 1",2010, 160); books.add(b1); Book b2= new Book("Signals and Systems",2011, 260); books.add(b1); Book b3= new Book("Optical Communication",2011, 30); books.add(b1); Book b4= new Book("5G",2010, 10); books.add(b1); BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); b.add(books); assertTrue("contains returned true for a BookStore with only b1", b.contains(b1)); assertFalse("contains returned false for a BookStore with only b1", b.contains(b2)); assertFalse("contains returned false for a BookStore with only b1", b.contains(b3)); assertFalse("contains returned false for BookStore with only b1", b.contains(b4)); } //sellingsinglebook @Test public void test07a_sellingsingleBook() { List books = new ArrayList(); Book b1= new Book("Java 1",2010, 160); books.add(b1); Book b2= new Book("Signals and Systems",2011, 260); books.add(b2); Book b3= new Book("Optical Communication",2011, 30); books.add(b3); Book b4= new Book("5G",2010, 10); books.add(b4); BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); b.add(books); Book got = b.sellingsingleBook(w, b1); assertEquals("selling returned the wrong Book", b1, got); got = b.sellingsingleBook(w, b2); assertEquals("selling returned the wrong Book", b2, got); got = b.sellingsingleBook(w, b3); assertEquals("selling returned the wrong Book", b3, got); got = b.sellingsingleBook(w, b4); assertEquals("selling returned the wrong Book", b4, got); } @Test public void test07b_sellingsingleBook() { List books = new ArrayList(); Book b1= new Book("Java 1",2010, 160); books.add(b1); Book b2= new Book("Signals and Systems",2011, 260); books.add(b2); Book b3= new Book("Optical Communication",2011,30); books.add(b3); Book b4= new Book("5G",2010, 10); books.add(b4); BookStoreOwner w = new BookStoreOwner("OwnerA"); BookStore b = new BookStore(w); b.add(books); Book got = b.sellingsingleBook(new BookStoreOwner("OwnerB"),b1); assertNull("remove allowed a non-owner to remove a book", got); } @Test public void test_comparator() { List books = new ArrayList(); Book b1= new Book("Java 1",2010, 160); books.add(b1); Book b2= new Book("Signals and Systems",2011, 260); books.add(b2); Book b3= new Book("Optical Communication",2018, 30); books.add(b3); Book b4= new Book("5G",2000, 10); books.add(b4); Collections.sort(books, new SortBooksbyYear()); List exp = new ArrayList<>(Arrays.asList(new Book("5G",2000, 10), new Book("Java 1",2010, 160), new Book("Signals and Systems",2011, 260), new Book("Optical Communication",2018, 30)));