CIS 265 Data Structures and Algorithms

Assignment 4

Due: 12:24pm, Tue, Feb. 23, 2021

100 points

I. General Description

In this assignment, you will create a Java program to create undergraduate and graduate students.

1. The program will keep asking the user if more students are to be created. If the user says no,
the program enters search mode. If the user says yes, the program will ask if an

undergraduate student or a graduate student is created. Depending on the answer, the

program will ask information about the student and create the student.

2. The program prompts the user to input details of each student including name, id,

and gpa.

For undergraduate students, the program also asks if the student is a transfer student. For

graduate students, the program asks the college the student graduated from.

3. In the search mode, the program keeps asking the user for a student ID. If the student ID is 0,
the program will print “Goodbye!” and exit. Otherwise, the program will search for the

student ID. If a match is found, the program will call printStudent() to print the student

information. If no match is found, the program prints “Student ID xxxx not found.” For

undergraduate students, the program prints their name, id, gpa, and if the student is a transfer

student. For graduate students, the program prints their name, id, gpa, and the college they

graduated from.

4. A sample run will look like this where the green texts are user inputs:

Do you have more student to enter (Y for yes, N for no): Y
Undergraduate or Graduate? (U for undergraduate, G for graduate): U
Student name:Dee K Jones
Student ID:1000
Student GPA:3.2
Is student a transfer student? (Y for yes, N for no):Y
Do you have more student to enter (Y for yes, N for no): Y
Undergraduate or Graduate? (U for undergraduate, G for graduate): U
Student name:Pi Si Phi
Student ID:2002
Student GPA:2.1
Is student a transfer student? (Y for yes, N for no):N
Do you have more student to enter (Y for yes, N for no): Y
Undergraduate or Graduate? (U for undergraduate, G for graduate): G
Student name:Kim Jon Woo
Student ID:3003
Student GPA:3.8
What college did the student graduate from:Top Secret School
Do you have more student to enter (Y for yes, N for no): Y
Undergraduate or Graduate? (U for undergraduate, G for graduate): G
Student name:Ba Sing Klip
Student ID:4001
Student GPA:2.8
What college did the student graduate from:Ohio Cleveland State

Do you have more student to enter (Y for yes, N for no): N
Enter a student ID (enter 0 to quit): 2002
Student name:Pi Si Phi
Student ID:2002
Student GPA:2.1
Transder Student: false
Enter a student ID (enter 0 to quit): 3003
Student name:Kim Jon Woo
Student ID:3003
Student GPA:3.8
College Graduated: Top Secret School
Enter a student ID (enter 0 to quit): 2930
Student ID 2930 not found.
Enter a student ID (enter 0 to quit): 0
Goodbye.

II. Implementation Requirements

The program must implement a main class and three student classes (Student, UndergradStudent,

GradStudent) which are specified in the following UML class diagram.

• All classes must be in the same package. The package name must start with your last name.
For example, if your last name is “Biden”, your package name must start with “Biden” such

as “BidenCIS265”, “BidenDataStructures”, etc.

• You main class file name must start with your last name. For example, if your last name is
“Spiderman”, your main class file name must start with “Spiderman” such as

“Spiderman4.java”, “SpidermanAssign4.java”, etc.

• You must create an ArrayList of Students in the main class:
import java.util.ArrayList;
ArrayList students = new ArrayList<>();

• The ArrayList variable will store all Student objects created, both undergraduate students and
graduate students.

• The Student class must have a constructor that takes a name, an id, and a gpa, to create a
Student object.

Student

-name: String

-id: int

-gpa: float

+Student()

+Student(String, int, float)

+pringStudent():void

+getID():int

UndegradStudent

-boolean: isTransfer

+UndergradStudent(String, int, float, boolean)

+pringStudent():void

GradStudent

-college:String

+GradStudent(String, int, float, String)

+pringStudent():void

• The UndergradStudent class must have a constructor that takes a name, an id, a gpa, and a
transfer status to create an UndergradStudent object. The constructor must call the Student’s

constructor using super.

• The GradStudent class must have a constructor that takes a name, an id, a gpa, and a college
to create an GradStudent object. The constructor must call the Student’s constructor using

super.
• The Student class must have a public method printStudent() that prints the student’s name, id,

and gpa.

• The UndergradStudent class must override the printStudent() method. It must print the
student’s name, id, gpa, and transfer status. It must call the Student’s printStudent() to print

student’s name,

id, and gpa.

• The GradStudent class must override the printStudent() method. It must print the student’s
name, id, gpa, and college. It must call the Student’s printStudent() to print student’s name,

id, and gpa.

• The printing of students must use dynamic binding:
students.get(i).printStudent();

• You can assume that user inputs are in correct format. You will earn bonus points for
handling some incorrect inputs.

• The Scanner’s nextInt() method does NOT read the newline character. You need call a
nextLine() after nextInt() to discard the newline character.

• You may reuse your own code from the previous assignments.

III. Submission

This is an individual assignment. Each student needs to submit the source code files of the Java

program on Blackboard.

1. Put all you Java files in a folder. Please name the folder after your package name, for
example, BidenCIS265. Zip the folder and submit the zip file.

2. You need to only submit the source code, i.e., the Java files.
3. You may submit multiple time. Your most recent submission before the deadline will be

graded.

4. You should follow the programming guidelines.

IV. Grading
1. A program that does not run will receive 0 point.
2. There is a 10-20 points deduction for each major error, e.g., missing a student in the search.
3. There is a 1-9 points deduction for each minor error, e.g., a spelling error in printed message.
4. A program that does not follow the guidelines will lose 1-10 points.
5. Any type of cheating is not tolerated. You may be asked to explain your program in person.

V. Bonus features (optional)
1. The program will ignore incorrect inputs such as “ye”, “m”, “ok”, etc, instead of “Y” or “N”,

when asked if more students are entered. The program simply ignores them and prompt

again. For example:

Do you have more student to enter (Y for yes, N for no): ok
Do you have more student to enter (Y for yes, N for no): Y

2. The program will ignore incorrect inputs such as “ug”, “gr”, “under”, etc, instead of “U” or
“G” when asked if an undergraduate or a graduate student is entered. The program simply

ignores them and prompt again. For example:

Do you have more student to enter (Y for yes, N for no): Y
Undergraduate or Graduate? (U for undergraduate, G for graduate): master
Undergraduate or Graduate? (U for undergraduate, G for graduate): G

3. You may implement as many bonus features as you want. If you correctly implement 1 bonus

feature, you get 3 points. If you correctly implement 2 bonus features, you get 5 points.

4. If you implement any bonus feature in your program, please put a comment in your

Blackboard submission and in your main Java file. In your comments, explain which bonus

feature(s) you implemented.