Java project, computer programming, Programming Languages

Assignment Help:
NOTE: You will only submit the University.java and EmptyFileException.java files (inside P3.zip/tar)

NOTE on null objects:. From Project 1: Since the array of students in the Course class might have no objects (null), remember to do a null check when traversing the array.

UPDATE March 23rd: There was a slight error in the "university.txt" file provided for part A. Please make sure you work with the latest version.

NOTE: You should NOT modify any classes other than University.java.
Description:

For this project you will be storing and retrieving the Sakai system implemented in project 1.
You will first need to download the solution to project 1.
There are two parts to the project:

PART A:. This part involves writing out all the information to a file. Modify the University.java file by adding this method:
public boolean writeToFile(String filename):
-The method should write out all the information to the filename passed in. If successfully written it returns true, otherwise false.
-The file format is as follows: (parentheses indicate the information has to be written out)

University Name: (university''s name)
Current Term: (currentTerm)
Current Year: (currentYear)
Number of Students: (number of students)
Number of Instructors: (number of instructors)
Number of Courses: (number of courses)

The information above is to be written out first. Immediately following the above the information for each student has to be written out as specified below:

Undergrad/Grad Student:
Name: (student''s name)
UFID: (student''s ufid)
D.O.B: (student''s dob)
GPA: (student''s gpa)
Number of Courses: (number of courses the student is enrolled in)

Immediately following the above the information for each instructor has to be written out as specified below:

Instructor:
Name: (instructor''s name)
UFID: (instructor''s ufid)
D.O.B: (instructor''s dob)

Immediately following the above the information for each course has to be written out as specified below:

Course:
(type) (number)
(title)
Number of credits: (numCredits)
Instructor UFID: (UFID of the instructor)
Number of TAs: (number of TAs)
TA UFIDs: (ufid of first ta),(ufid of second ta),...,(ufid of last ta)
Capacity: (capacity)
Current Enrollment: (currentEnrollment)
Student UFIDs: (ufid of first student),(ufid of second student),...,(ufid of last student)


That signifies the end of the file.


Use TestDriver1 to test your solution to Part A.
This driver will produce a file named university.txt. Use the output file provided to compare whether your program writes it out properly.

PART B: This part will involve reading from a file and reconstructing all the objects in the Sakai system.

Create the class EmptyFileException, which will be a subclass of Exception.. This exception is thrown when a file is empty. It will have the following properties and methods:
Properties:
----------
- String filename; // This represents the name of the file which is empty

Constructors:
------------
- EmptyFileException()
Empty constructor which does nothing
- EmptyFileException(String filename)
Takes in the name of the file which is empty and set''s the properties appropriately

Methods:
--------
public String toString();
It will return a string in this format:

The file (filename) is empty.


Modify the University.java file by adding this method:
public static University readFromFile(String filename):
-This method will read in all the university info from a file and construct the university object.
-If the object is properly created it is returned, otherwise a null object is returned.
-If the file to read from is empty, the method will try-and-catch the EmptyFileException created above.
When the exception is caught it''s information is printed out (via the toString method).

(HINT: Try to use helper methods for reading in different kinds of objects - Student, Instructor and Course.)

Use TestDriver2 to test your solution. It tries to read in the university.txt file. Compare with our output.

Related Discussions:- Java project, computer programming

Implement a two-dimensional table in prolog, Implement a two-dimensional ta...

Implement a two-dimensional table in Prolog. Your program will contain: An insert_entry predicate that takes a table, row, column and an entry and inserts the entry at the g

Assignment about prolog, Hi I have an assignment for prolog languagle is ...

Hi I have an assignment for prolog languagle is it possible to get help

ActionScript, looking for help with a flash game assignment.

looking for help with a flash game assignment.

Python , Python Programming hmw help!! Write a program that ask the user to...

Python Programming hmw help!! Write a program that ask the user to input the followings: number of shares, stock price, and broker commission. Last month jim purchased some stock

Need help starting a project out, I''m doing a project for class in college...

I''m doing a project for class in college and im supposed to use today''s date and figure out how old i am in months, days, minutes, and seconds. My question is what is the beset

Write a perl script that prints the contents of a file, Write a Perl script...

Write a Perl script that prints the contents of a file Write a Perl script that prints the contents of a file, prefixing each line with a line number. The script should acc

Java applet assignment help, Objectives: Create an applet, Use metho...

Objectives: Create an applet, Use methods from the Graphics class , Use the Color class General Instructions: The java class that need to be imported into this assignm

Fortran source code, For this programming assignment, you are to develop a ...

For this programming assignment, you are to develop a Fortran 90/95/2003 program to automate a useful task. The aim of the assignment is for you to reveal your competence in the Fo

Laplace transforms, There actually isn't all that much to this section. All...

There actually isn't all that much to this section. All we are going to do now is work a quick illustration using Laplace transforms for a 3 rd order differential equation therefo

Shell script, append two text files vertically

append two text files vertically

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd