Assignment 3: Student scores, and reservations

Due: 11:59 pm on Wednesday November 18

The purpose of this assignment is for you to work with arrays, interfaces, and dates in Java. There are two exercises.

1. Display a sorted list of student scores (5%)

Console

Welcome to the Student Scores Application.

Enter number of students to enter: 4

Student 1 last name: Rainer

Student 1 first name: Kelly

Student 1 score: 95

Student 2 last name: Turban

Student 2 first name: Efraim

Student 2 score: 92

Student 3 last name: Schmidt

Student 3 first name: Doug

Student 3 score: 82

Student 4 last name: Sanchez

Student 4 first name: Cristal

Student 4 score: 93

Rainer, Kelly: 95

Sanchez, Cristal: 93

Schmidt, Doug: 82

Turban, Efraim: 92

Operation

·         This application accepts the last name, first name, and score for one or more students and stores the results in an array. Then, it prints the students and their scores in alphabetical order by last name.

Specifications

·         Create a class named Student that stores the last name, first name, and score for each student. This class should implement the Comparable interface so the students can be sorted by name. If two students have the same last name, the first name should be used to determine the final sort order. Assume that no two students will have the same first and last name.

·         Create a StudentScoresApp class to run the program (that is, in its main method). The program should use an array to store the Student objects. Then, it should sort the array prior to printing the student list.

·         Validate the input so the user can enter only a positive integer for the number of students, the last or first name can’t be an empty string, and the score is an integer from 0 to 100.

2. Calculate reservation totals (5%)

Console

Welcome to the Reservation Calculator.

Enter the arrival month (1-12): 5

Enter the arrival day (1-31): 16

Enter the arrival year: 2005

Enter the departure month (1-12): 5

Enter the departure day (1-31): 18

Enter the departure year: 2005

Arrival Date: Monday, May 16, 2005

Departure Date: Wednesday, May 18, 2005

Price: $115.00 per night

Total price: $230.00 for 2 nights

Another reservation? (y/n): n

Operation

·         This application calculates the charges for a stay at a hotel based on the arrival and departure dates.

·         The application begins by prompting the user for the month, day, and year of the arrival and the departure.

·         Next, the application displays the arrival date, the departure date, the room rate, the total price, and the number of nights.

Specifications

·         Create a class named Reservation that defines a reservation. This class should contain instance variables for the arrival date and departure date. It should also contain a constant initialized to the nightly rate of $115.00.

·         The Reservation class should contain a constructor that accepts the arrival and departure dates as parameters of type Date, as well as methods that return the number of nights for the stay (calculated by subtracting the arrival date from the departure date) and the total price (calculated by multiplying the number of nights for the stay by the nightly room rate). This class should also override the toString method to return a string like this:

Arrival Date: Monday, May 16, 2005
Departure Date: Wednesday, May 18, 2005
Price: $115.00 per night
Total price: $230.00 for 2 nights

·         The main method for the application class (called ReservationCalculatorApp) should contain a loop that asks the user for the arrival and departure date information, creates a Reservation object, and displays the string returned by the toString method.

·         Assume valid data is entered.

Submission

To submit the assignment, do the following:

• Package your completed assignment as one zip file with two executable jar files:
  • The first jar file named "YourFirstName YourLastName Assignment 3 StudentScoresApp.jar" should have two classes: StudentScoresApp and Student. Package it in BlueJ using Project -> Create Jar File... -> Continue (Main class: StudentScoresApp; select Include source and BlueJ project files).
  • The second jar file named "YourFirstName YourLastName Assignment 3 ReservationCalculatorApp.jar" should also have two classes: Reservation and ReservationCalculatorApp. Package it in BlueJ using Project -> Create Jar File... -> Continue (Main class: ReservationCalculatorApp; select Include source and BlueJ project files).
  • Zip the two jar files into one file named "YourFirstName YourLastName Assignment 3.zip".
• E-mail the zip file to This e-mail address is being protected from spambots. You need JavaScript enabled to view it no later than 11:59 pm on Wednesday November 18.
• This assignment counts as 10% of your class grade.