Some basic information about a group of students from the College of Natural Science & Mathematics has been stored in two files.  One file, named living.txt, contains info about where the students live; each line of the file has the following form:

Student_Number Last_name, First_name       Dormitory

This is a text file with the Student Number being 6 digits; this is followed by a space.  The last name (always one word) is followed by a comma and a space; the first name (always one word) is often followed by many spaces but always at least one.  The dormitory is also a single word.  This file stores the student's info in alphabetical order.

The second file, named academics.dat, contains information about how the student is doing academically; it is a binary file.  For each student, the following information is stored in consecutive bytes:

Student number (4-byte integer); Age (2-byte integer); Number_of_credits (2-byte integer);  GPA (32-bit floating point value); and Major (a 4-byte character sequence, such as COSC).  Thus, each student's info is represented in 16 bytes in the file; the information is stored in ascending student-number order.

You are to write a Java program that reads in the information from both files and then responds to commands that are entered through the keyboard.  The program should prompt the person at the keyboard to enter an 'M' or 'm' for see listings by major; to enter 'D' or 'd' to see listings by dormitory; to enter 'I' or 'i' to see a listing about an individual student; or to enter 'Q' or 'q' to quit.  After specifying the type of listing, the person at the keyboard should be asked to specify the name of the Major or Dormitory or the student's number.

For the Major action, the listing should show the Student number, name, number of credits, and GPA for every student in that major.*

For the Dormitory action, the listing should show the Student number, name, age, and major for every student in that dormitory.*

For an individual student, the listing should show all information about that one student.

* There is one exception for the Major and Dormitory listings.  If the person at the keyboard, enters "All" instead of a major or dormitory name, a different listing must be produced.  For Major, the "All" listing should show the name of every major and the number of students in that major.  For Dormitory, the "All" listing should show the name of every dormitory and the number of students who live there.

Here are a couple sample listings:  First a listing of students living in Lawrence Hall:

Students living in Lawrence
Student Name                      Age  Major
 215923 Bumstead, Alexander        20  BIOC
 217706 Cameron, Toby              22  BIOL
 214877 Capp, Andy                 18  COSC
 216673 Fillmore, Mallard          20  BIOL
 219036 Flagston, Lois             19  EOPT
 215922 Mitchell, Henry            20  ENVH
 213407 Smith, Tina                19  BIOL
 219863 Thornapple, Brutus         25  COSC
 219404 Tracy, Dick                18  ENVH
 214641 Worth, Mary                20  GEOS
 

Then a listing of all information about one student (Mary Worth, 214641):

Student number: 214641
Student  Name                     Dorm       Major  Age  Credits    GPA
 214641  Worth, Mary              Lawrence    GEOS   20       49   3.52

Finally, a listing of the counts of students by major:

Which major? All
Major     No.Students
MAED           8
CHEM           7
BIOL          17
PHYS           9
MATH          10
ENVH          15
BIOC           7
EOPT          15
COSC          14
GEOS           7
NMTT          11

Both living.txt and academics.dat can be found in the folder   I:/jlwolfe/310.  Requirement:  you must create at least one interface for interacting with the person at the keyboard (Chapter 1 provides a model).  The class which implements the interface (and others) will be changed when you do project #2.

Hand in the following materials:  a printout of all interfaces, classes and methods you created to do this project and a printout showing the responses to several commands which I will specify three days before the project is due.  Copy all .java files you made to your folder on the P drive for COSC 310.