code


import java.util.LinkedList;

public class Administrator {
private String name;
private String login;
private String password;

public Administrator(String name, String login, String password) {

}

}

import java.util.LinkedList;

public class Administrators {
LinkedList administrators;

public Administrators() {

}

public void insertDummyData() {
administrators.add(new Administrator("David Dyer", "david46@uts.com", "123"));
administrators.add(new Administrator("Angela Huo", "angela123@uts.com", "mypw"));
//...
}
}

import java.util.LinkedList;

public class Agency {

private Administrator loggedInUser;
private Destinations destinations;
private Flights flights;
private Administrators admins;

public static void main(String[] args) {

}


}

public class Destination {
private String country;
private String name;

public Destination(String name, String country) {

}

}

import java.util.LinkedList;

public class Destinations {

private LinkedList destinations;
private Agency agency;

public Destinations(Agency agency) {

}

}

import java.util.Date;

public class Flight {
private String airline;
private int flightNo;
private String takeoff;
private String landing;
private double cost;

public Flight(String airline, int flightNo, String takeoff, String landing, double cost) {

}

}
import java.util.InputMismatchException;
import java.util.LinkedList;

public class Flights {
private LinkedList flights;
private Agency agency;

public Flights(Agency agency) {

}

}

public class Trip {

private Flights flights;
private Destinations destinations;
private Agency agency;

public Trip(Agency agency) {

}

}


import java.util.Comparator;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Scanner;

public class Utils {

static int counter = 0;
static Scanner scanner = new Scanner(System.in);
static String[] airlines = {"American Airlines", "QANTAS", "JetStar", "Tiger Airways", "United Airlines", "Egypt Air", "Etihad", "Singapore Airlines", "British Air", "Cathay Dragon"};

//Prompts the user with the provided message and read in the first char inputted to the console
public static char readChoice(String message) {
System.out.print(message);
return scanner.nextLine().charAt(0);
}

//Returns the next line inputted
public static String nextLine() { return scanner.nextLine(); }

//Returns the next integer inputted
public static int nextInt() {
int value = scanner.nextInt();
scanner.nextLine();
return value;
}

//Returns the the next double inputted
public static double nextDouble() {
double value = scanner.nextDouble();
scanner.nextLine();
return value;
}

public static void clearConsole() { scanner.nextLine(); }

//Takes in a destination and then adds flights to the agency that land and depart to all combinations of and
public static void addFlightsForDestination(Destination destination, Agency agency) {
HashSet allCountries = new HashSet();
for (Destination d : agency.getDestinations().getDestinations()) { if (!allCountries.contains(d.getCountry())) { allCountries.add(d.getCountry()); } }

for (String s : allCountries) {
if (s.equals(destination.getCountry())) { continue; }
if (!agency.getFlights().hasFlight(s, destination.getCountry())) { agency.getFlights().addFlight(new Flight(airlines[counter%10], getNewFlightNumber(agency), s, destination.getCountry(), getNewCost(agency))); }
if (!agency.getFlights().hasFlight(destination.getCountry(), s)) { agency.getFlights().addFlight(new Flight(airlines[counter%10], getNewFlightNumber(agency), destination.getCountry(), s, getNewCost(agency))); }
}
}

public static void flightsHeader() {
System.out.format("+----------------------+----------------+--------------+-------+-------+%n");
System.out.format("| Flights |%n");
System.out.format("+----------------------+----------------+--------------+-------+-------+%n");
}

public static void destinationsHeader() {
System.out.format("+----------------------+----------------+--------------+-------+-------+%n");
System.out.format("| Destinations |%n");
System.out.format("+----------------------+----------------+--------------+-------+-------+%n");
}

public static void tripHeader() {
System.out.format("+----------------------+----------------+--------------+-------+-------+%n");
System.out.format("| Trip |%n");
System.out.format("+----------------------+----------------+--------------+-------+-------+%n");
}

public static void footer() { System.out.format("+----------------------+----------------+--------------+-------+-------+%n"); }

//DONT USE METHODS BELOW
//Everything below is just to stop Ed tests from exploding

static int[] flightNumbers = {683, 575, 722, 453, 516, 339, 940, 642, 72, 368, 892, 162, 855, 372, 763, 687, 101, 905, 933, 311, 693, 739, 629, 829, 475, 634, 587, 885, 300, 967, 812, 130, 68, 166, 536, 208, 647, 860, 173, 325, 450, 662, 664, 554, 806, 705, 457, 872, 825, 859, 173, 229, 966, 988, 348, 469, 962, 861, 322, 110, 394, 973, 808, 986, 943, 970, 887, 13, 225, 419, 532, 447, 346, 723, 819, 63, 635, 697, 490, 879, 65, 975, 980, 912, 633, 824, 478, 278, 743, 7, 389, 604, 224, 231, 843, 59, 45, 619, 698, 117};
static double[] costs = {749.87, 978, 826.58, 445.31, 417.91, 220.87, 911.92, 863.21, 8.29, 876.95, 841.37, 348.29, 396.26, 421.29, 636.65, 810.02, 779.25, 347.49, 454.54, 511.52, 415.68, 178.97, 611.49, 178.42, 420.67, 665.55, 491.86, 222.99, 548.23, 314.31, 736.12, 211.3, 530.05, 438.52, 299.32, 819.67, 641.98, 195.59, 672.9, 548.54, 806.92, 247.6, 148.1, 857.81, 302.36, 81.36, 239.36, 970.31, 13.45, 960.45, 449.41, 301.03, 615.24, 138.32, 402.64, 605.96, 135.84, 189.21, 533.04, 10.88, 290.01, 19.28, 210.12, 678.15, 362.85, 9.75, 381.48, 964.55, 903.66, 73.98, 731.05, 3.35, 291.69, 452.74, 370.26, 280.52, 10.21, 850.91, 58.26, 126.74, 824.87, 270.07, 412.11, 140.27, 534.23, 721.42, 452.62, 20.04, 982.77, 208.24, 341.84, 810.56, 917.71, 727.7, 815.34, 874.81, 450.99, 151.48, 307.15, 138.51};

public static double getNewCost(Agency agency) {
counter++;
if (counter >= 50) { counter = 0; }
return costs[counter];
}

public static int getNewFlightNumber(Agency agency) {
counter++;
if (counter >= 50) { counter = 0; }
return flightNumbers[counter];
}
}

test case :

 

 

Specification The Travel Agency is hiring a software engineer to develop a new management system, which consists of two main components, an administrative component, and a trip booking component. The administrative section will allow, through text-based menus, the login and logout of agents, the addition and removal of destinations in the system, the display of all destinations, and the addition and removal of flights in the system. The trip booking component will store a list of the destination information and a list of flight information. The trip booking component will allow the creation and display of the trip booking information. A trip consists of multiple destinations, with multiple flights that connect these destinations together based on the country they are in. Each destination record will include the destination's name and country. Each trip has a minimum of 2 destinations. This means that you should always expect a Trip to have n destinations and n-1 flights. Each flight record will include the flight's airline name, flight number, takeoff place, landing place and cost. The agency can only book one existing flight between two countries. The takeoff and landing for a Flight are represented as a String of the country, and the combination of these two fields is unique. You do not have to worry about the dates or times of the flight. The flights in a trip are based solely on the destinations. For example, if a trip consists of 3 destinations: Eiffel Tower | France Opera House | Australia Machu Picchu | Peru Then your code should search the agency's flight list for 2 connecting flights. For example: American Airlines I 232 | France -> Australia QANTAS I 189 | Australia -> Peru