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

Program to output a triangle wave, 1.) Write a flowchart and program to do ...

1.) Write a flowchart and program to do the following: A pressure sensor in a cooling system measures the pressure of the refrigerant and is connected to Port -1 of the 8051. If th

Str_concat procedure, Write a procedure named Str_concat that concatenates ...

Write a procedure named Str_concat that concatenates a source string to the end of a target string. Sufficient space must exist in the target string to accommodate the new characte

Oracle, What is "No_Data_Found" in Oracle?

What is "No_Data_Found" in Oracle?

Sql vb integration, I need an application that will gather data from one SQ...

I need an application that will gather data from one SQL Database and update another. Data is contained in dbo.CallList with following fields: Customer_ID, AlreadyPickedUp, Phone_N

Java packages, Expertsmind brings you unique solution in java assignments ...

Expertsmind brings you unique solution in java assignments Packages A Java packages is a process for planning Java sessions into namespaces just like the segments of Modu

Need help for crowdsporting website development, CrowdSporting Website Deve...

CrowdSporting Website Development I want an advanced web developer to spend 1-2 days coding our newly designed website. It will be a single page scrolling site, fully designed a

Write a program to display some data in bar graph form, Write a program to ...

Write a program to display some data in bar graph form. Have at least 20 elements, which can be positive or negative; draw each element with a vertical bar, going up if the data is

How will you add styles to a document, Question 1 How will you add styles ...

Question 1 How will you add styles to a document? Question2 How will you view XML in different ways? Question 3 Explain various file handling mechanism available in PERL

Created xml document using the css stylesheet, After studying the concept, ...

After studying the concept, terminology, and implementation of CSS stylesheets, create a stylesheet to accompany your solutions to Question 1. A rich collection of styles should be

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

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