COIT 20245: Java Console Program - Rocky’s Car Parking System - IT Assessment Answers

Objectives

This assessment item relates to the course learning outcomes as in the Course Profile.

Details

For this assignment, you are required to develop a Java Console Program to demonstrate you can use Java constructs including input/output via a command line, Java primitive and built-in data types, Java defined objects, selection and looping statements, methods, and various other Java commands. Your program must produce the correct results. You are only allowed to use techniques which have been covered in the first six weeks of the course, you must use the Scanner object for input and no advanced data structures like arrays will be used. Instructions for this appear in the implementation section of this specification.

What to submit for this assignment

The Java source code:

CarPark.java

A report including a flow chart (UML activity diagram) to depict your validation loop for reading the hours, how long it took to create, any problems encountered and screen shots of the output produced. (Use Alt-PrtScrn to capture just the console window and you can paste it into your Word document) You should test every possibility in the program.

ReportAss1.docx

You will submit your files by the due date using the “Assignment 1” link on the Moodle course website in the Assessment Block or in the relevant week.

Assignment specification

The Rocky car park management has asked you to write a program to help employees determine the fees for cars using their car park and to also produce some statistics

You are to write a Java Console Application (CarPark.java) which will allow employees to enter the details of N cars’ licence plate and the number of hours spent at the Rocky car park. N should be equal to the highest digit in your student ID, use N=3 if your highest digit is less than three. For each car the program will prompt for and accept the licence plate number of the car and the length of stay at the car park (in whole hours), it will then display the total cost of parking (see sample output below for formatting details).

• The pricing structure for parking is (maximum twelve hours):
• The first hour will cost $7.50. The next three hours will cost $4.50 per hour.
• The next four hours will cost $3.50 per hour.
• The remaining hours will cost $2.50 per hour.

When all cars’ licence plate numbers and hours stayed have been entered you need to report the maximum and minimum stay (in hours) and the relevant licence plate numbers, the average stay and the total parking fees which have been collected.

The required Java Console Application should allow the user to:

1. For each of the N cars: enter the Licence plate number, and then enter the Length of stay in whole hours. The program will output the fee for the car’s stay. All dollar values will be formatted to two decimal places (see implementation below with help for doing this).
2. You must ensure the licence plate is not blank so you must implement a validation loop so a valid licence plate number is entered. The number of hours must be between 1 and 12 inclusive and you will also need to implement a validation loop so valid hours are entered.The program will number each car in the input prompt.
3. When N cars have been entered, you will output a heading for the statistics “Statisticalinformation for the Rocky car park”, the minimum and maximum stays (in hours) and the licence plate number of the cars with these minimums and maximums, and then what the average stay is in hours (formatted to two decimal places) (see sample output below). Note: if more than one car has an equal maximum or minimum stay you just need to only output one of the car’s licence plate number .
4. Display a welcome message at the beginning “Welcome to the Rocky car park system” and an end message e.g. “Thank you for using the Rocky car park system” and the final line “Program written by <your student ID>” (see sample output below)

Flow chart for Car Parking System:

Screen Shots of Testing:

Given all correct inputs

Prompting the correct inputs of license plate number and Number of hours stay for Car1:

Prompting the correct inputs of license plate number and Number of hours stay for Car2:

Prompting the correct inputs of license plate number and Number of hours stay for Car3:

Checking Maximum and minimum number of hours stay

Checking for maximum and minimum number of stay

Checking for maximum and minimum number of stay

Work around:

It took a week around to develop the coding with the help of topics covered in the first six weeks of course. All the materials has been referred and code is implemented on the course basis.

Problem encountered:

With the Decimal formatting. It has been resolved and string format is used in the code in order to display the real values with two decimal points

Car Park Programming: Java Console Program

//Student name

//Student ID

//Date

//File name

//Purpose of the file

import java.util.Scanner;

public class CarPark {

public static void main(String[] args) {

//Variable Student_id to find the number of cars

int student_id=12022033;

int student_id1=student_id;

//to get the license plate number and number of hours stay

String license_plate1;

int no_of_hoursstay1;

String license_plate2;

int no_of_hoursstay2;

String license_plate3;

int no_of_hoursstay3;

//to calculate the parking fees for each car

double parking_fee1=0;

double parking_fee2=0;

double parking_fee3=0;

//to calculate the average number of hours

double average=0;

double count=0;

//to calculate the parking fees according to number of hours stay

final double first_hour=7.50;

final double three_hour=4.50;

final double four_hour=3.50;

final double rem_hour=2.50;

//to calculate the total fees of the car parking

double total_fees=0;

int last_digit;

int n=0;

//Printing the welcome message of the parking system

System.out.println("==========Welcome to the Rocky car park system==========");

//To Find the highest digit in the student id

while(student_id1>0){

last_digit=student_id1%10;

if(last_digit>n){

n=last_digit;

}

student_id1=student_id1/10;

}

System.out.println("The highest digit in the my student_id 12022033 is" +n);

//To get the input values for license plate number and number of hours stay

Scanner license=new Scanner(System.in);

Scanner hoursstay=new Scanner(System.in);

System.out.println();

//To get the license plate number of car1

System.out.println("Enter the license plate number of the car 1 : ");

license_plate1=license.nextLine();

//Validating whether the license plat is a not null value

while(license_plate1==null||license_plate1.trim().isEmpty()){

System.out.println("WARNING : Car's License plate number cannot be null");

System.out.println("Enter the license plate number of the car1 : ");

license_plate1=license.next();

}

//To get the number of hours stay of the car1

System.out.println("Enter the Car's Number of hours stay "+license_plate1+" to be parked(1-12) : ");

no_of_hoursstay1=hoursstay.nextInt();

//Validating whether the number of hours is between 1 and 12

while(no_of_hoursstay1<=0 || no_of_hoursstay1>12){

System.out.println("WARNING : Number of hours stay for a car1 should be between 1 and 12");

System.out.println("Enter the Car's Number of hours stay "+license_plate1+" to be parked(1-12) : ");

no_of_hoursstay1=hoursstay.nextInt();

}

//Calculaing the parking fees for Car1

if(no_of_hoursstay1>=8){

parking_fee1=first_hour+(3*three_hour)+(4*four_hour)+((no_of_hoursstay1-8)*rem_hour);

}else if(no_of_hoursstay1<8&&no_of_hoursstay1>5){

parking_fee1=first_hour+((no_of_hoursstay1/2)*three_hour)+((no_of_hoursstay1-4)*four_hour);

}else if(no_of_hoursstay1<=5&&no_of_hoursstay1>3){

parking_fee1=first_hour+(3*three_hour)+((no_of_hoursstay1-4)*four_hour);

}else if(no_of_hoursstay1<=3&&no_of_hoursstay1>0){

parking_fee1=first_hour+((no_of_hoursstay1-1)*three_hour);

}

System.out.println("The Parking fees for car1 "+license_plate1+" for "+no_of_hoursstay1+" is : $"+String.format("%.2f",parking_fee1));

System.out.println();

//To get the license plate number of he car2

System.out.println("Enter the license plate number of the car 2 : ");

license_plate2=license.nextLine();

//Validating whether the license late is a not null

while(license_plate2==null||license_plate2.trim().isEmpty()){

System.out.println("WARNING : Car's License plate number cannot be null");

System.out.println("Enter the license plate number of the car2 : ");

license_plate2=license.next();

}

//To get the number of hours stay of the car2

System.out.println("Enter the Car's Number of hours stay "+license_plate2+" to be parked(1-12) : ");

no_of_hoursstay2=hoursstay.nextInt();

//Validating whether the number of hours stay is between 1 and 12

while(no_of_hoursstay2<=0 || no_of_hoursstay2>12){

System.out.println("Number of hours stay for a car2 should be between 1 and 12");

System.out.println("Enter the Car's Number of hours stay "+license_plate2+" to be parked(1-12) : ");

no_of_hoursstay2=hoursstay.nextInt();

}

//Calculating the parking fees for car2

if(no_of_hoursstay2>=8){

parking_fee2=first_hour+(3*three_hour)+(4*four_hour)+((no_of_hoursstay2-8)*rem_hour);

}else if(no_of_hoursstay2<8&&no_of_hoursstay2>5){

parking_fee2=first_hour+((no_of_hoursstay2/2)*three_hour)+((no_of_hoursstay2-4)*four_hour);

}else if(no_of_hoursstay2<=5&&no_of_hoursstay2>3){

parking_fee2=first_hour+(3*three_hour)+((no_of_hoursstay2-4)*four_hour);

}else if(no_of_hoursstay2<=3&&no_of_hoursstay2>0){

parking_fee2=first_hour+((no_of_hoursstay2-1)*three_hour);

}

System.out.println("The Parking fees for car2 "+license_plate2+" for "+no_of_hoursstay2+" is : $"+String.format("%.2f",parking_fee2));

System.out.println();

//To get the license plate number for car3

System.out.println("Enter the license plate number of the car3 : ");

license_plate3=license.nextLine();

//Validating the license plate number of car3 is not null

while(license_plate3==null||license_plate3.trim().isEmpty()){

System.out.println("WARNING : Car's License plate number cannot be null");

System.out.println("Enter the license plate number of the car3 : ");

license_plate3=license.next();

}

//To get the number of hours stay of the car3

System.out.println("Enter the Car's Number of hours stay "+license_plate3+" to be parked(1-12) : ");

no_of_hoursstay3=hoursstay.nextInt();

//Validaing whether the number of hours stay is between 1 and 12

while(no_of_hoursstay3<=0 || no_of_hoursstay3>12){

System.out.println("WARNING : Number of hours stay for a car3 should be between 1 and 12");

System.out.println("Enter the Car's Number of hours stay "+license_plate3+" to be parked(1-12) : ");

no_of_hoursstay3=hoursstay.nextInt();

}

//Calculating the parking fees for car3s

if(no_of_hoursstay3>=8){

parking_fee3=first_hour+(3*three_hour)+(4*four_hour)+((no_of_hoursstay3-8)*rem_hour);

}else if(no_of_hoursstay3<8&&no_of_hoursstay3>5){

parking_fee3=first_hour+((no_of_hoursstay3/2)*three_hour)+((no_of_hoursstay3-4)*four_hour);

}else if(no_of_hoursstay3<=5&&no_of_hoursstay3>3){

parking_fee3=first_hour+(3*three_hour)+((no_of_hoursstay3-4)*four_hour);

}else if(no_of_hoursstay3<=3&&no_of_hoursstay3>0){

parking_fee3=first_hour+((no_of_hoursstay3-1)*three_hour);

}

System.out.println("The Parking fees for car3 "+license_plate3+"for "+no_of_hoursstay3+" is : $"+String.format("%.2f",parking_fee3));

System.out.println();

//To display the statistics informtion of the car parking system

System.out.println("==========Statistical information for the Rocky Car park==========");

//checking for the minimum number of hours stay for the car

if((no_of_hoursstay1<Integer.MAX_VALUE)&&(no_of_hoursstay1<no_of_hoursstay2) && (no_of_hoursstay1<no_of_hoursstay3)){

System.out.println("Car1 with license plate number "+license_plate1+" has the minimum stay of "+no_of_hoursstay1+" hours");

}else if((no_of_hoursstay2<Integer.MAX_VALUE)&&(no_of_hoursstay2<no_of_hoursstay3)){

System.out.println("Car2 with license plate number "+license_plate2+" has the minimum stay of "+no_of_hoursstay2+" hours");

}else if((no_of_hoursstay3<Integer.MAX_VALUE)){

System.out.println("Car3 with license plate number "+license_plate3+" has the minimum stay of "+no_of_hoursstay3+" hours");

}

//To display the maximum number of hours stay of the car

if((no_of_hoursstay1>Integer.MIN_VALUE)&&(no_of_hoursstay1>no_of_hoursstay2) && (no_of_hoursstay1>no_of_hoursstay3)){

System.out.println("Car1 with license plate number "+license_plate1+" has the maximum stay of "+no_of_hoursstay1+" hours");

}else if((no_of_hoursstay2>Integer.MIN_VALUE)&&(no_of_hoursstay2>no_of_hoursstay3)){

System.out.println("Car2 with license plate number "+license_plate2+" has the maximum stay of "+no_of_hoursstay2+" hours");

}else if((no_of_hoursstay3>Integer.MIN_VALUE)){

System.out.println("Car3 with license plate number "+license_plate3+" has the maximum stay of "+no_of_hoursstay3+" hours");

}

//Calculating the average number of hours stay of the cars in the parking system

System.out.println();

//Variable is initialized to convert int to decimal for number of our stays

double avg1=no_of_hoursstay1;

double avg2=no_of_hoursstay2;

double avg3=no_of_hoursstay3;

average=(avg1+avg2+avg3)/3;

System.out.println("The average stay of cars in hours is : "+String.format("%.2f", average));

//Calculating the total fees of all the cars parked

total_fees=parking_fee1+parking_fee2+parking_fee3;

System.out.println("The total fees for the car parking is : "+String.format("%.2f",total_fees));

//To close the scanner objects of license and hoursstay

license.close();

hoursstay.close();

System.out.println();

System.out.println();

//Printing the end message of the system

System.out.println("Thank you for using the Rocky's Car Parking System");

System.out.println("Program wirtten by"+student_id);

}

}