This is the Question:
Assume that card has a valid PIN to start, and that there is 100 units in the bank account. Each video has a rental ‘cost’. You will need to scan the Basket list and calculate the total for the ATM transaction. You can assume there is always enough units in the bank account to cover the cost of the rental for this exercise. A version of Video Kiosk code will contain the following steps:
• Create Linked List for Video Titles and fill with choice of 5 items
• Create an empty Linked List (Basket) to store the customer selection
• Present a menu driven selection process
Complete selection process
Bring the contents of the basket list to the ATM and pay
Vkiosk.java
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Scanner;
public class VKiosk {
private static LinkedList VTable=new LinkedList();
private static LinkedList Basket=new LinkedList();
private static double rentCost=0;
private static int j=1;
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// declaring scanner name as "typeNumber"
Scanner typeNumber = new Scanner(System.in);
System.out.println("::: Welcome to My Java Program To model an ATM machine :::");
showVideoList();
System.out.print("Input the serial number of video to buy: ");
buyVideo();
System.out.println("Your total amount of Cost: "+ rentCost);
MMachine buy = new MMachine();
buy.Txn(rentCost);
}
public static double buyVideo(){
Scanner typeNumber = new Scanner(System.in);
String title=typeNumber.nextLine();
String amount=null;
for(int i=0;i<VTable.size();i++){
String videoDetails=VTable.get(i).toString();
if(videoDetails.toLowerCase().contains(title.toLowerCase())){
Basket.add(VTable.get(i));
for(int j=videoDetails.length()-2;j>=0;j--){
if(videoDetails.charAt(j)==' '){
break;
}
amount=videoDetails.substring(j, videoDetails.length()-1);
}
VTable.remove(i);
}
}
rentCost=Double.parseDouble(amount);
return rentCost;
}
public static void VideoList(){
Video vTable1=new Video("BladeRunner", 1, 5);
Video vTable2=new Video("Wages of Fear", 2, 4);
Video vTable3=new Video("Grease", 3, 5);
Video vTable4=new Video("Mama Mia", 4, 4);
Video vTable5=new Video("L'Illusionniste", 5, 6);
VTable.add(vTable1);
VTable.add(vTable2);
VTable.add(vTable3);
VTable.add(vTable4);
VTable.add(vTable5);
}
public static void showVideoList(){
System.out.println();
System.out.println("********************************************************************");
System.out.println("List of the Videos are: ");
System.out.println("********************************************************************");
System.out.println("Serial No Video Detetails");
VideoList();
for(int i=0; i<VTable.size(); i++){
System.out.println( j+" "+VTable.get(i));
j++;
}
System.out.println();
}
}
Video.java
public class Video{
private String title;
private int serial;
private double cost;
public Video(String title, int serial, double cost)
{
this.title = title;
this.serial = serial;
this.cost = cost;
}
public String getTitle() {return title;}
public int getSerial() {return serial;}
public double getCost() {return cost;}
public String getVideo() {
return "title:" + title + " Serial: " + serial + " Cost: " + cost;
}
// Upgrade output of toString ()
@Override
public String toString() {
return "["+getVideo()+"]";
}
}
I am succeed to buy only one items, need to buy multiple items through Linked List Basket.
The reason there is only a single purchase is that you do not have a loop to attempt to purchase (or rent; the nomenclature is a bit confused) additional selections. There are also some static class variables that make the procedure a bit more complex. Here are some suggestions.
Main Method
Add a loop to collect additional input. In addition, remove the static double rentCost and move to the main method (also, change the buyVideo to return the cost rather than updating the instance variable). Add a method to continue to collect input.
private static boolean purchaseAnother(Scanner stdin)
{
while (true) {
System.out.println();
System.out.println("Purchase another (y/n): ");
String chk = stdin.nextLine();
if (chk != null && chk.trim().length() > 0) {
if (chk.toLowerCase().equals("y")) { return true; }
if (chk.toLowerCase().equals("n")) { return false; }
}
}
}
/**
* @param args
* the command line arguments
*/
public static void main(String[] args)
{
// declaring scanner name as "typeNumber"
Scanner typeNumber = new Scanner(System.in);
System.out.println(
"::: Welcome to My Java Program To model an ATM machine :::");
boolean buyMore = true;
// **ADD: initialize the video list only once
VideoList();
// **USE LOCAL VARIABLE FOR COST
double rentCost = 0.0d;
while (buyMore) {
showVideoList();
System.out.print("Input the serial number of video to buy: ");
//**ACCUMULATE THE TOTAL COST
rentCost += buyVideo();
System.out.printf("Current total $%.2f", rentCost);
// SEE IF WISH TO KEEP GOING IF THERE IS ANYTHING LEFT TO RENT
buyMore = (! VTable.isEmpty() && purchaseAnother(typeNumber));
}
// actually make a purchase
// ADD STATEMENT, but this might be in the MMachine class; unknown
System.out.printf("Charging $%.2f to the Debit Card%n", rentCost);
MMachine buy = new MMachine();
buy.Txn(rentCost);
System.out.println("Have a nice day!");
}
BuyVideo method
Change to return the rental amount; do not update an instance variable
public static double buyVideo()
{
Scanner typeNumber = new Scanner(System.in);
String title = typeNumber.nextLine();
String amount = null;
for (int i = 0; i < VTable.size(); i++) {
String videoDetails = VTable.get(i).toString();
if (videoDetails.toLowerCase().contains(title.toLowerCase())) {
Basket.add(VTable.get(i));
for (int j = videoDetails.length() - 2; j >= 0; j--) {
if (videoDetails.charAt(j) == ' ') {
break;
}
amount = videoDetails.substring(j,
videoDetails.length() - 1);
}
// ** ADD LINE TO INDICATE ACTION
System.out.println("Purchasing: " + VTable.remove(i).getTitle());
}
}
// ** CHANGE TO USE A LOCAL VARIABLE AND RETURN IT
double videoRentCost = Double.parseDouble(amount);
return videoRentCost;
}
showVideoList method
Remove the VideoList() call -- only initialize the rental list once in the main() method. Also, consider cleaning up the output formatting a bit.
public static void showVideoList()
{
System.out.println();
System.out.println(
"********************************************************************");
System.out.println("List of the Videos are: ");
System.out.println(
"********************************************************************");
// **USE PRINTF TO GIVE BETTER FORMATTING
System.out.printf("%10s %53s%n","Serial No","Video Details");
for (int i = 0; i < VTable.size(); i++) {
// **USE SIMILAR FORMATTING OUTPUT
System.out.printf("%10d %53s%n", VTable.get(i).getSerial(), VTable.get(i));
}
System.out.println();
}
This change will give a presentation like:
********************************************************************
List of the Videos are:
********************************************************************
Serial No Video Details
1 [title:BladeRunner Serial: 1 Cost: 5.0]
2 [title:Wages of Fear Serial: 2 Cost: 4.0]
3 [title:Grease Serial: 3 Cost: 5.0]
4 [title:Mama Mia Serial: 4 Cost: 4.0]
5 [title:L'Illusionniste Serial: 5 Cost: 6.0]