我正在为Luas Station用来购买门票的系统制作一个Java程序。 Luas是爱尔兰的一种火车。
我有几种不同类型的门票，涉及各种价格等。在客户选择要购买的门票后，我给他们一个选择，可以返回“ chooseTickets”的开头购买更多的门票。最后，我已将程序中所有客户所需票证的值分配为completePrice变量。这个想法是允许客户继续添加票证，并允许该变量将票证价格不断添加到变量中，直到他们准备付款为止。它可以正常工作，除非我回购票，并且是同一类型，即两次成人票。 2.50的价格不会添加到另一个2.50，而是被另一个2.5覆盖。下面是相同的代码：
import java.util.Scanner; //imports the scanner class to allow for user input
public class ticketPurchase {
//Adding global variables to be used by various methods
static Scanner input = new Scanner(System.in);
static String menuChoice;
static double childTicket = 1.20;
static double adultTicket = 2.50;
static double studentTicket = 1.70;
static double adultFlexi = 12.00;
static double childFlexi = 8.00;
static double studentFlexi;
static String ticketType;
static String ticketChoice;
static int adultTicketQty;
static int childTicketQty;
static int studentTicketQty;
static String destinationZone;
static double adultFinalPrice;
static double childFinalPrice;
static double studentFinalPrice;
static double flexiAdultFinalPrice;
static double flexiChildFinalPrice;
static double completePrice;
static String moreTicketChoice2 = "0";
public static void main(String[] args) {
menu(); //calling the menu method within the main method to start the process
}
public static void menu() {
if(moreTicketChoice2.equals("1")){
System.out.println("Press 2 to purchase Standard Tickets");
System.out.println("Press 3 to purchase Flexi tickets");
System.out.println("press 4 to purchase student tickets");
}
else if(moreTicketChoice2.equals("0")) {
System.out.println("Press 1 for information");
System.out.println("Press 2 to purchase Standard Tickets");
System.out.println("Press 3 to purchase Flexi tickets");
System.out.println("press 4 to purchase student tickets");
}
menuChoice = input.next(); //allowing user to choose what tickets to buy or just to see information of services
switch(menuChoice) { //switch statement to record and output information based on users input
case "1":{ //prints information regarding pricing, ticket age restrictions and support
System.out.println("The standard ticket may be a single or return ticket for an adult (16+) or a child");
System.out.println("The flexi ticket covers all journeys for one 24 hour period for either a child or an adult");
System.out.println("A single ticket's price depends on the journey length, single or return and if it is for an adult or a child");
System.out.println("a Flexi ticket for a child costs €8.00 and a Flexi ticket for an adult costs €12.00");
System.out.println("Our Customer Care telephone number for this terminal is 0830462920, please call if further support is required");
menu();
break;
}
case "2":{
ticketChoice = "standard"; //records the value of standard within the ticketChoice global variable
chooseTickets(); //initiates the choose tickets method
break;
}
case "3":{
ticketChoice = "flexi"; //record the value of Flexi within the ticketChoice global variable
chooseTickets();
break;
}
case "4":{
ticketChoice = "student";
chooseTickets();
}
case "a":{ //allows user to enter the admin interface
admin();
break;
}
default:{ //allows for user to input a value outside of the options and notify's them to try again
System.out.println("Invalid choice, please choose from 1 to 3");
break;
}
}
}
public static void chooseTickets() { //payment method to choose quantity, destination zone and final price
System.out.println("You have chosen to purchase " + ticketChoice + " ticket(s)");
if(ticketChoice.equals("student")) { //allows user to purchase student's tickets
ticketType = "student";
System.out.println("Please enter the quantity of tickets: ");
studentTicketQty = input.nextInt();
System.out.print("please enter your destination zone (1, 2, 3, 4): ");
destinationZone = input.next();
ticketChoice = "student";
studentFinalPrice = (studentTicket*studentTicketQty);
switch(destinationZone){ //adjusts price to account for the destination's zone chosen by user
case "1":{
studentFinalPrice = studentFinalPrice + (studentTicketQty*0);
break;
}
case "2":{
studentFinalPrice = studentFinalPrice + (studentTicketQty*0.50);
break;
}
case "3":{
studentFinalPrice = studentFinalPrice + (studentTicketQty*1.0);
break;
}
case "4":{
studentFinalPrice = studentFinalPrice + (studentTicketQty*1.50);
break;
}
default:{
System.out.println("you have entered an invalid choice please choose from 1 to 4");
chooseTickets();
break;
}
}
System.out.print("would you like to purchase more tickets? enter 1 if so, 2 if not: "); //allows user to purchase other tickets
moreTicketChoice2 = input.next();
if(moreTicketChoice2.equals("1")) {
menu();
}
else if(moreTicketChoice2.equals("2")){
System.out.println("you have chosen against purchasing more tickets");
payment();
}
}
else {
System.out.print("please enter 1 for children's tickets and 2 for adult's: ");
String ticketAgeGroup = input.next();
switch(ticketAgeGroup) { //allows user to choose quantity and destination based on choice of adult or child
case "2":{//case for adult tickets
System.out.println("you have chosen adults ticket");
ticketType = "adult";
System.out.print("Please enter the quantity of tickets: ");
adultTicketQty = input.nextInt();
System.out.print("please enter your destination zone (1, 2, 3, 4): ");
destinationZone = input.next();
if(ticketChoice == "flexi") { //if statement to calculate the finalPrice variable value if the ticketChoice is Flexi
flexiAdultFinalPrice = (adultFlexi*adultTicketQty);
}
else {
adultFinalPrice = (adultTicket*adultTicketQty); //else calculates the finalPrice variable value if the ticketChoice is standard
}
switch(destinationZone){ // switch statement to calculate the final price depending on the destination's zone and their extra amount.
case "1":{
adultFinalPrice = adultFinalPrice + (adultTicketQty*0);
break;
}
case "2":{
adultFinalPrice = adultFinalPrice + (adultTicketQty*.50); //calculation to add the extra amount for the destination
break;
}
case "3":{
adultFinalPrice = adultFinalPrice + (adultTicketQty*1.0);
break;
}
case "4":{
adultFinalPrice = adultFinalPrice + (adultTicketQty*1.50);
break;
}
default:{
System.out.println("you have entered an invalid choice please choose from 1 to 4");
break;
}
} //end of the switch statement
System.out.print("Would you like to purchase more tickets? enter 1 if so, 2 if not: "); //allows user to purchase other tickets
moreTicketChoice2 = input.next();
if(moreTicketChoice2.equals("1")) { //if statement to allow a customer to purchase more tickets if required
menu();
}
else {
System.out.println("you have chosen against purchasing more tickets");
payment(); //proceeds to the payment method
}
break;
}
case "1":{ //case for children's tickets
System.out.println("you have chosen children's ticket");
ticketType = "child";
System.out.println("Please enter the quantity of tickets: ");
childTicketQty = input.nextInt();
System.out.print("please enter your destination zone (1, 2, 3, 4): ");
destinationZone = input.next();
if(ticketChoice == "flexi") { //adjusts the price if user chooses the flexi option
flexiChildFinalPrice = (childFlexi*childTicketQty);
}
else {
childFinalPrice = (childTicket*childTicketQty);
}
switch(destinationZone){ //adjusts price to account for the destination's zone chosen by user
case "1":{
childFinalPrice = childFinalPrice + (childTicketQty*0);
break;
}
case "2":{
childFinalPrice = childFinalPrice + (childTicketQty*.50);
break;
}
case "3":{
childFinalPrice = childFinalPrice + (childTicketQty*1.0);
break;
}
case "4":{
childFinalPrice = childFinalPrice + (childTicketQty*1.50);
break;
}
default:{
System.out.println("you have entered an invalid choice please choose from 1 to 4");
chooseTickets();
break;
}
}
System.out.print("would you like to purchase more tickets? enter 1 if so, 2 if not: "); //allows user to purchase other tickets
moreTicketChoice2 = input.next();
if(moreTicketChoice2.equals("1")) {
menu();
}
else if(moreTicketChoice2.equals("2")){
System.out.println("you have chosen against purchasing more tickets");
payment();
}
break;
}
}
}
}
public static void payment() { //method to complete the payment process for the purchase
completePrice = adultFinalPrice + childFinalPrice + studentFinalPrice + flexiAdultFinalPrice + flexiChildFinalPrice;
System.out.println("the total due is €" + completePrice);
}
public static void printTickets() { //method to notify the customer that their tickets are printing
}
public static void admin() { //method to control the admin's interface
}
}
