Develop Reference

parking ticket sim having output issue

Truthfully, I mixed some codes.
I need output like below:
Parking ticket #:
Fined amount:
Car issued to:
Issued by officer:
But here is current output:
Fined amount:
Car issued to:
Parking ticket #:null
Fined amount:
Issued by officer:
So looks like the main issue is with generating a parking ticket #
Code is
import java.util.Scanner;
public class ParkingTicketSimulator
{
public static void main(String[] args)
{
String make, model, color, license, name, badge;
int parkedMinutes, meterMinutes;
Scanner keyboard = new Scanner(System.in);
System.out.print("=== Parking Ticket Simulator ===\n\n");
System.out.print("---------\n");
System.out.print("Car Data\n");
System.out.print("---------\n\n");
System.out.print("Enter the car make: ");
make = keyboard.nextLine();
System.out.print("Enter the car model: ");
model = keyboard.nextLine();
System.out.print("Enter the car color: ");
color = keyboard.nextLine();
System.out.print("Enter the car license number: ");
license = keyboard.nextLine();
System.out.print("Enter minutes car has been parked:");
parkedMinutes = keyboard.nextInt();
System.out.print("\n----------\n");
System.out.print("Meter Data\n");
System.out.print("----------\n\n");
System.out.print("Enter minutes purchased by driver:");
meterMinutes = keyboard.nextInt();
keyboard.nextLine();
System.out.print("\n-------\n");
System.out.print("PO Data\n");
System.out.print("-------\n\n");
System.out.println();
System.out.print("Enter police officer's name:");
name = keyboard.nextLine();
System.out.print("Enter police officer's badge number:");
badge = keyboard.nextLine();
System.out.print("\n---------------------\n");
System.out.print("Parking Ticket Issued\n");
System.out.print("---------------------\n\n");
ParkedCar car = new ParkedCar(make,model,color,license,parkedMinutes);
ParkingMeter meter1 = new ParkingMeter (meterMinutes);
PoliceOfficer officer1 = new PoliceOfficer(name,badge,car,meter1);
System.out.println(officer1.getExpired(officer1));
}
public static class ParkedCar {
private String make;
private String model;
private String color;
private String license;
private int minutesParked;
public ParkedCar() {
make = "";
model = "";
color = "";
license = "";
minutesParked = 0;
}
public ParkedCar(ParkedCar carDetails){
make = carDetails.make;
model = carDetails.model;
color = carDetails.color;
license = carDetails.license;
minutesParked = carDetails.minutesParked;
}
public ParkedCar(String make, String model, String color, String license, int minutesParked){
this.make = make;
this.model = model;
this.color = color;
this.license = license;
this.minutesParked = minutesParked;
}
public void setMake (String make){
this.make = make;
}
public void setModel (String model){
this.model = model;
}
public void setColor (String color){
this.color = color;
}
public void setLicense (String license){
this.license = license;
}
public void minutesParked (int minutesParked){
this.minutesParked = minutesParked;
}
public String getMake(){
return make;
}
public String getModel(){
return model;
}
public String getColor(){
return color;
}
public String getLicense(){
return license;
}
public int getMinutesParked(){
return minutesParked;
}
public String toString(){
String str = "\nMake: " + make + "\nModel: " + model + "\nColor: " + color + "\nLicense: " + license + "\nMinutes parked: " + minutesParked;
return str;
}
}
public static class ParkingMeter {
private int minutes;
public ParkingMeter() {
minutes = 0;
}
public ParkingMeter(int minutes){
this.minutes = minutes;
}
public ParkingMeter (ParkingMeter minutesDetail){
minutes = minutesDetail.minutes;
}
public void setMinutes (int minutes){
this.minutes = minutes;
}
public int getMinutes(){
return minutes;
}
public String toString(){
String str ="\nMinutes: " + minutes;
return str;
}
}
public static class ParkingTicket{
private PoliceOfficer officer; //Calls the officer details.
private ParkedCar car;
private ParkingMeter meter;
private int fees;
public ParkingTicket(PoliceOfficer officer){
this.officer = new PoliceOfficer(officer);
this.meter = officer.getMeter();
this.car = officer.getParkedCar();
}
public ParkingTicket(){
}
public int fees(){
int time;
if (car != null || meter != null){
time = car.getMinutesParked() - meter.getMinutes() - 1;
fees = 25;
while (time > 0){
time = time - 1;
fees = fees+10;
}
}
return fees;
}
public String toString(){
if (fees() == 0 ){
String str = "There is no ticket issued.";
return str;
}
else{
String str = "\n" + officer +"\nTime over: " + (car.getMinutesParked() - meter.getMinutes()) + "\nThe fee is $" + fees();
return str;
}
}
}
public static class PoliceOfficer{
private String name;
private String badge;
private ParkedCar car;
private ParkingMeter meter;
private ParkingTicket ticket;
public PoliceOfficer(String name, String badge, ParkedCar carDetails, ParkingMeter time) {
this.name = name;
this.badge = badge;
car = new ParkedCar(carDetails);
meter = new ParkingMeter(time);
}
public PoliceOfficer(PoliceOfficer officerDetails){
name = officerDetails.name;
badge = officerDetails.badge;
car = officerDetails.car;
meter = officerDetails.meter;
}
public void setName (String name){
this.name = name;
}
public void setBadge (String badge){
this.badge = badge;
}
public String getName(){
return name;
}
public String getBadge(){
return badge;
}
public ParkedCar getParkedCar() {
return new ParkedCar(car);
}
public ParkingMeter getMeter(){
return new ParkingMeter(meter);
}
public ParkingTicket getExpired(PoliceOfficer officer){
if (meter.getMinutes() - car.getMinutesParked() < 0){
ticket = new ParkingTicket(officer);
return ticket;
}
else
ticket = new ParkingTicket();
return ticket;
}
public String toString(){
String str = "Officer Details\nOfficer's Name: " + name + "\nOfficer's Badge Number: " + badge + "\n\nCar Information: " + car + "\n\nMeter Information: " + meter;
return str;
}
}

Ending a Loop only after a user input gives a yes - Java

I am trying to create an app to take orders for a Hamburger and add additions. I want the additions to the burger to be based on a scanner input, but I am getting the error "Exception in thread "main" java.util.NoSuchElementException: No line found". Would appreciate if someone could help me understand where am I going wrong. I am a newbie to Java so please bear with me.
My code:
public class Hamburger {
private String name;
private double price;
private String breadRoll;
private String meat;
private String addition1Name;
private double addition1Price;
private String addition2Name;
private double addition2Price;
private String addition3Name;
private double addition3Price;
private String addition4Name;
private double addition4Price;
public Hamburger(double price, String meat) {
this.name = "Basic Hamburger";
this.price = price;
this.breadRoll = "White Bread";
this.meat = meat;
}
public void checkingAdditionCount(){
Scanner scanner = new Scanner(System.in);
System.out.println("Do you want to add more items?");
String answer = scanner.nextLine().toLowerCase();
boolean isCont = true;
while (isCont && scanner.hasNextLine()){
if (answer.equals("y")){
additions();
} else if (answer.equals("n")){
addAllItemsAndBill();
isCont = false;
scanner.close();
} else {
System.out.println("Please enter valid choice");
additions();
}
}
public void addAllItemsAndBill() {
System.out.println("Your total bill amount is " + this.price);
}
public void additions(){
Scanner scanner = new Scanner(System.in);
for (int count = 1; count < 5; count++){
System.out.println("Enter the addition name: ");
String additionName = scanner.nextLine();
System.out.println("Enter the addition price: ");
if (scanner.hasNextDouble()){
double additionPrice = scanner.nextDouble();
this.price += additionPrice;
}
scanner.nextLine();
checkingAdditionCount();
}
scanner.close();
this.addition1Name = name;
this.addition1Price = price;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
public String getBreadRoll() {
return breadRoll;
}
public void setBreadRoll(String breadRoll) {
this.breadRoll = breadRoll;
}
public String getMeat() {
return meat;
}
public void setMeat(String meat) {
this.meat = meat;
}
}

Try code, like:
while(true) {
if(scanner.nextLine().equals("y")) break;
}
It will be looping until user input not equal 'y' :)

How do I get user input from separate classes

My goal is to get an amount for an item and a description of that item. I want to get 10 inputs and their values. I don't know how to store their info without asking for one then the other. I want to be able to ask for the user to input the item then price and then store each of those values.
I was trying to create an array of objects to enter and then was suggested to use arraylists which I kind of understand but don't know how to implement in this case.
import java.util.ArrayList;
public class Invoice {
private ArrayList<Item> listOfItems;
public Invoice() {
listOfItems = new ArrayList<Item>();
}
public void addItem(Item item) {
listOfItems.add(item);
}
public double calculateNetItemCost() {
double netCost = 0;
for(Item currentItem : listOfItems) {
netCost += currentItem.getCost();
}
return netCost;
}
public double calculateTax(double taxRateAsADecimal) {
return calculateNetItemCost() * taxRateAsADecimal;
}
public double calculateGST() {
double GST = calculateNetItemCost() * 0.05;
return GST;
}
public double calculatePST() {
double PST = calculateNetItemCost() * 0.07;
return PST;
}
public double calculateTotalCost() {
double total = calculateGST() + calculatePST() + calculateNetItemCost();
return total;
}
}
public class Item {
private double amount;
private String description;
public Item(String description, double amount) {
this.amount = amount;
this.description = description;
}
public String toString() {
return description + ", $" + String.format("%.2f", amount);
}
public double getCost() {
return amount;
}
public void setAmount(double amount) {
this.amount = amount;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}
import java.util.Scanner;
import java.util.ArrayList;
public class CustomerBuild {
public static void main(String[] args) {
ArrayList<String> description = new ArrayList<String>();
ArrayList<Double> amount = new ArrayList<Double>();
Scanner input = new Scanner(System.in);
String userInput;
Item testItem = new Item("Apples", 4.00);
System.out.println(testItem);
Invoice testInvoice = new Invoice();
testInvoice.addItem(testItem);
double subTotal = testInvoice.calculateNetItemCost();
System.out.println(subTotal);
double GST = testInvoice.calculateGST();
System.out.println("GST: " + GST);
double PST = testInvoice.calculatePST();
System.out.println("PST: " + PST);
System.out.println("Total cost: " + testInvoice.calculateTotalCost());
}
}

This code snippet is what are you looking for. Asking the user for input then initializing the object using the values
Scanner input = new Scanner(System.in);
System.out.println("Please enter description(e.g.apple,banana,orange):");
String description =input.nextLine();
System.out.println("Please enter Price(e.g.4.0,5.99):");
Double price = scanner.nextDouble();
Item testItem = new Item(description, price);
For Looping:
for(int i =1;i<10;i++) {
System.out.println("Please enter description(e.g.apple,banana,orange):");
String description =input.nextLine();
System.out.println("Please enter Price(e.g.4.0,5.99):");
Double price = scanner.nextDouble();
testInvoice.addItem(new Item(description, price));
}

Searching an arraylist for the index of an object with a specific value

I'm writing a program to take and organize class info, including the students in a class, recorded by ID and Grade. I'm able to add the students as desired, and they print as desired (so I know the entries are correct), but when I go to search for a student, the search method is only able to find the last entered student ID. Why is my search function breaking down?
The search function:
public static int studentFinder(ClassSection classOne) {
int studentIndex = 0;
boolean searchAgain = false;
boolean correctStudent = false;
do {
studentIndex = idFinder(classOne);
if (studentIndex == -1) {
System.out.println("That student was not found in the class");
System.out.println("Would you like to search again?");
searchAgain = yesNoBool();
} else {
System.out.println("You have selected student ID# " +classOne.getStudentIDByIndex(studentIndex));
System.out.println("Is this correct?");
correctStudent = yesNoBool();
if (!correctStudent) {
System.out.println("Would you like to search again?");
searchAgain = yesNoBool();
}
}
} while(searchAgain);
return studentIndex;
}
ID Finder module:
public static int idFinder(ClassSection classOne) {
int studentID = 0;
String intString = "a Student ID to search for:";
int studentIndex = 0;
System.out.println("Please enter a Student ID to search for:");
studentID = intChecker(intString);
for (int i = 0; i < classOne.students.size(); i++) {
int studentIdTest = classOne.students.get(i).getStudentID();
if (studentIdTest == studentID) {
studentIndex = i;
} else if (studentIdTest != studentID){
studentIndex = -1;
}
}
return studentIndex;
}
The ClassSection class:
import java.util.*;
public class ClassSection {
//instance variables
protected int crnNum = 0;
protected String deptCode = "null";
protected int courseNum = 0;
protected String instructMode = "null";
protected String meetingDays = "null";
protected String meetingTimesStart = "null";
protected String meetingTimesEnd = "null";
protected int classCapacity = 0;
protected int classEnrollment = 0;
protected int instructorID = 0;
protected ArrayList<StudentEnrollee> students = new ArrayList<StudentEnrollee>();
//constructors
public ClassSection(int crnNum, String deptCode, int courseNum, String instructMode, String meetingDays,
String meetingTimesStart, String meetingTimesEnd, int classCapacity, int classEnrollment,
int instructorID) {
super();
this.crnNum = crnNum;
this.deptCode = deptCode;
this.courseNum = courseNum;
this.instructMode = instructMode;
this.meetingDays = meetingDays;
this.meetingTimesStart = meetingTimesStart;
this.meetingTimesEnd = meetingTimesEnd;
this.classCapacity = classCapacity;
this.classEnrollment = classEnrollment;
this.instructorID = instructorID;
}
public ClassSection() {
super();
this.crnNum = 0;
this.deptCode = "";
this.courseNum = 0;
this.instructMode = "";
this.meetingDays = "";
this.meetingTimesStart = "";
this.meetingTimesEnd = "";
this.classCapacity = 0;
this.classEnrollment = 0;
this.instructorID = 0;
}
//getters and setters
public void getStudents() {
this.students.forEach(System.out::println);
}
public int getStudentIDByIndex(int index) {
return this.students.get(index).getStudentID();
}
public void addStudent(StudentEnrollee student) {
this.students.add(student);
}
public void removeStudent(int removalIndex) {
this.students.remove(removalIndex);
}
public void changeAddStudentGrade(int studentIndex, int studentGrade) {
this.students.get(studentIndex).setStudentGrade(studentGrade);
}
public int getCrnNum() {
return crnNum;
}
public void setCrnNum(int crnNum) {
this.crnNum = crnNum;
}
public String getDeptCode() {
return deptCode;
}
public void setDeptCode(String deptCode) {
this.deptCode = deptCode;
}
public int getCourseNum() {
return courseNum;
}
public void setCourseNum(int courseNum) {
this.courseNum = courseNum;
}
public String getInstructMode() {
return instructMode;
}
public void setInstructMode(String instructMode) {
this.instructMode = instructMode;
}
public String getMeetingDays() {
return meetingDays;
}
public void setMeetingDays(String meetingDays) {
this.meetingDays = meetingDays;
}
public String getMeetingTimesStart() {
return meetingTimesStart;
}
public void setMeetingTimesStart(String meetingTimesStart) {
this.meetingTimesStart = meetingTimesStart;
}
public String getMeetingTimesEnd() {
return meetingTimesEnd;
}
public void setMeetingTimesEnd(String meetingTimesEnd) {
this.meetingTimesEnd = meetingTimesEnd;
}
public int getClassCapacity() {
return classCapacity;
}
public void setClassCapacity(int classCapacity) {
this.classCapacity = classCapacity;
}
public int getClassEnrollment() {
return classEnrollment;
}
public void setClassEnrollment(int classEnrollment) {
this.classEnrollment = classEnrollment;
}
public int getInstructorID() {
return instructorID;
}
public void setInstructorID(int instructorID) {
this.instructorID = instructorID;
}
//mutators
#Override
public String toString() {
return String.format("Crn Number: %20s \nDept Code: %20s \nInstruction Mode: %20s"
+ " \nCourse Number: %20s \nClass Capacity: %20s \nClass Enrollment: %20s"
+ " \nMeeting Days: %20s \nMeeting Times: %8$20s - %9$2s \nInstructor ID: %10$20s \n" + Arrays.toString(students.toArray()).replace("[", "").replace(", S","S").replace("]", "").trim(),
crnNum, deptCode, instructMode, courseNum, classCapacity, classEnrollment, meetingDays,
meetingTimesStart, meetingTimesEnd, instructorID);
}
}
The student enrollee class (where the objects in the arraylist are from):
public class StudentEnrollee {
protected int studentID = 0;
protected int studentGrade = 0;
public StudentEnrollee() {
super();
studentID = 0;
studentGrade = 0;
}
public StudentEnrollee(int studentID, int studentGrade) {
super();
this.studentID = studentID;
this.studentGrade = studentGrade;
}
//setters & getters
public int getStudentID() {
return studentID;
}
public void setStudentID(int studentID) {
this.studentID = studentID;
}
public int getStudentGrade() {
return studentGrade;
}
public void setStudentGrade(int studentGrade) {
this.studentGrade = studentGrade;
}
#Override
public String toString() {
return String.format("Student ID: %20s \nStudent Grade: %20s \n", studentID, studentGrade);
}
}
The intchecker and yesNoBool methods are just error checking and confirmation functions, but here they are just in case:
public static int intChecker(String object) {
boolean correctInput = false;
int userInput = 0;
while (!correctInput) {
try {
userInput = scanner.nextInt();
correctInput = true;
} catch(InputMismatchException e) {
System.out.println("I'm sorry, that doesn't seem to be a number");
System.out.println("Please enter " +object);
scanner.next();
}
}
return userInput;
}
public static boolean yesNoBool() {
String yesNo = "";
boolean yesNoBool = false;
System.out.println("Please enter Y/N");
yesNo = scanner.next();
while ((!yesNo.equalsIgnoreCase("n") && !yesNo.equalsIgnoreCase("y"))){
System.out.println("I'm sorry, please enter Y/N");
yesNo = scanner.next();
}
if (yesNo.equalsIgnoreCase("y")) {
yesNoBool = true;
} else if (yesNo.equalsIgnoreCase("n")) {
yesNoBool = false;
}
return yesNoBool;
}

Once you found the match you have to break the loop, otherwise studentIndex gets overwritten for rest of the records for which loop iterating. Also you don't need if(studentIdTest != studentID) just else is also work same.
Add Break in loop in idFinder method as follows:
for (int i = 0; i < classOne.students.size(); i++) {
int studentIdTest = classOne.students.get(i).getStudentID();
if (studentIdTest == studentID) {
studentIndex = i;
break;
} else{
studentIndex = -1;
}
}
Suggestion: you can intialize studentIndex with -1 instead of setting it in each iteration where match not found.
I hope this will solve your problem.

In your idFinder method, you continue to search for the id even when you find it. In the for loop, you need to stop when you find the id.
Modify your for loop to:
public static int idFinder(ClassSection classOne) {
String intString = "a Student ID to search for:";
int studentIndex = -1; // Initialize the studentIndex to a negative value since 0 is a valid index
System.out.println("Please enter a Student ID to search for:");
int studentID = intChecker(intString);
for (int i = 0; i < classOne.students.size(); i++) {
int studentIdTest = classOne.students.get(i).getStudentID();
if (studentIdTest == studentID) {
studentIndex = i;
break;
}
}
return studentIndex;
}

Java ArrayList Class

I started this code and I don't know how to finish it. I need to make the class and test driver for a collection of SalesPeople and their data. I created the salespeople class and constructor. i created the accessors and mutators. I need help combing into this into an arrayList class for my test driver. PLEASE HELP (:
import java.util.*;
public class salesPerson {
//salesPerson fields
private int salespersonID;
private String salespersonName;
private String productType;
private int unitsSold = 0;
private double unitPrice;
//Constructor method
public salesPerson(int salespersonID, String salespersonName, String productType, int unitsSold, double unitPrice)
{
this.salespersonID = salespersonID;
this.salespersonName = salespersonName;
this.productType = productType;
this.unitsSold = unitsSold;
this.unitPrice = unitPrice;
}
//Accessor for salesPerson
public int getSalesPersonID(){
return salespersonID;
}
public String getSalesPersonName(){
return salespersonName;
}
public String getProductType(){
return productType;
}
public int getUnitsSold(){
return unitsSold;
}
public double getUnitPrice(){
return unitPrice;
}
public double getTotalSold(){
return unitsSold * unitPrice;
}
//Mutoators for salesPerson
public void setSalesPersonID(int salespersonID){
this.salespersonID = salespersonID;
}
public void setSalesPersonName(String salespersonName) {
this.salespersonName = salespersonName;
}
public void setProductType(String productType){
this.productType = productType;
}
public void setUnitsSold(int unitsSold){
this.unitsSold += unitsSold;
}
public void setUnitProce(double unitPrice){
this.unitPrice = unitPrice;
}
public static void main(String[] args)
{
ArrayList<salesPerson> salesPeople = new ArrayList<salesPerson>();
Scanner userInput = new Scanner(System.in);
boolean newRecord = true;
int salespersonID;
String salespersonName;
String productType;
int unitsSold = 0;
double unitPrice;
do{
System.out.println("Please enter the Salesperson Inoformation.");
System.out.print("Salesperson ID: ");
salespersonID = userInput.nextInt();
System.out.print("Salesperson Name: ");
salespersonName = userInput.next();
System.out.print("Product Type: ");
productType = userInput.next();
System.out.print("Units Sold: ");
unitsSold = userInput.nextInt();
System.out.print("Unit Price: ");
unitPrice = userInput.nextDouble();
System.out.print("Would you like to enter more data?(y/n)");
String askNew = userInput.next();
newRecord = (askNew.toLowerCase().equals("y")) ? true : false;
}while(newRecord == true);
}
}

You have already created a variable called salesPeople.
After taking all the inputs from user create a new object of SalesPerson and add to the salesPeople at the end in while loop.
Check the Below code for more clarity.
.....
SalesPerson tmp = new SalesPerson(salespersonID, salespersonName, productType, unitsSold, unitPrice);
salesPeople.add(tmp);
}while (newRecord == true)
....

Put this inside your do-while-loop after you have all the data. You need to create each SalesPerson after you have the data, otherwise the values (id, name...) will just be lost and overwritten in the next loop-iteration
salesPeople.add(new SalesPerson(salespersonID, salespersonName, productType, unitsSold, unitPrice));

Because the arraylist salesPeople takes objects of salesPerson you will first want to create an object of salesPerson and then add the salesPerson to the salesPeople arraylist.
salesPerson sp = new salesPerson(salespersonID, salespersonName, productType, unitsSold, unitPrice);
salesPeople.add(sp);
Put that at the end of your do while right before you ask them if you want to create a new salesPerson.

add below 2 lines(creating sp object and adding it to list) at the end of do that is before the line below
System.out.print("Would you like to enter more data?(y/n)");
SalesPerson sp = new SalesPerson(salespersonID, salespersonName, productType, unitsSold, unitPrice);
salesPeople.add(sp);