Question

You are asked to build and test the following system using Java and the object-oriented concepts you learned in this course: Project (20 marks) CIT College of Information technology has students, faculty, courses and departments. You are asked to create a program to manage all these information's. Create a class CIT to represents the following: Array of Students, each student is represented by class Student. Array of Faculty, each faculty is represented by class Faculty. Array of Course, each course is represented by class Course. Classes to be created and used in the CIT Class Student (inherits Person) which is composed by: students ID, GPA, and array of courses taken. .Person represented by: full name, address, and date of birth Course: course ID, course name, course Credit. Faculty (inherits Person): id, salary, and List of teaching courses. Write a CITDemo program where you do the following: -Upon starting up the CITDemo program, you should fill the information of each class (students, courses, faculty) from input files. Page 2 of4 Upon exiting the program, all data must be saved back to files Using your CITDemo program we must be able to do any of the following using a menu options selection: 1. Print a List of students, faculty, and courses (each separately). 2. Add/Edit/Delete new student, faculty or course with its related information Search (by id or name/title) for a particular student, faculty or course amongn the arrays 3. 1. Print a List of students, faculty, and courses (each separately) 2. Add/Edit/Delete new student, faculty or course with its related information Search (by id or name/title) for a particular student, faculty or course 3. among the arrays 4. Add or Drop a student from a particular course 5. Add or Drop a course from a particular faculty. 6. Display the student with the top GPA 7. Display the total credit hours each student has 8. List of faculty that taught a specific course. 9. List of students enrolled in a specific course. 10. Exit

Answer 1

public class CIT
{
   public Student[] student;
   public Faculty[] faculty;
   public Course[] course;
  
   public CIT(Student[] student, Faculty[] faculty, Course[] course)
   {
       this.course = course;
       this.faculty = faculty;
       this.student = student;
   }
}

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.Scanner;

import com.google.gson.*;

public class CITDemo
{
   public static void main(String[] args) {
       System.out.println("asd");
       //CIT c = new CIT();
       Student[] student = ReadStudent("Students.json");
       Course [] courses = ReadCourse("courses.json");
       Faculty [] faculty = ReadFaculty("faculty.json");
      
       Scanner myInput = new Scanner( System.in );
      
       do {
           System.out.print( "Enter choice: " );
           System.out.print( "1. Students List" );
           System.out.print( "2. Exit" );
          
          
           int a = myInput.nextInt();
           switch(a)
           {
           case 1:
           {
               DisplayStudents(student);
               break;
           }
           case 2:
           {
               //DisplayStudents(student);
               break;
           }
           }
       }
       while(true);
   }

   private static void DisplayStudents(Student[] student) {
       // TODO Auto-generated method stub
      
   }

   private static Faculty[] ReadFaculty(String string) {
       // TODO Auto-generated method stub
       Gson gson = new Gson();
       BufferedReader br = null;
       try {
           br = new BufferedReader(
           new FileReader("C:\\Users\\huzefa\\eclipse-workspace\\CIT\\bin\\faculty.json"));
       } catch (FileNotFoundException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }
      
       Faculty[] faculty = gson.fromJson(br, Faculty[].class);
      
       return faculty;
   }

   private static Course[] ReadCourse(String string) {
       // TODO Auto-generated method stub
      
       Gson gson = new Gson();
       BufferedReader br = null;
       try {
           br = new BufferedReader(
           new FileReader("C:\\Users\\huzefa\\eclipse-workspace\\CIT\\bin\\courses.json"));
       } catch (FileNotFoundException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }
      
       Course[] courses = gson.fromJson(br, Course[].class);
      
       return courses;
   }

   private static Student[] ReadStudent(String string) {
       // TODO Auto-generated method stub
       Gson gson = new Gson();
       BufferedReader br = null;
       try {
           br = new BufferedReader(
           new FileReader("C:\\Users\\huzefa\\eclipse-workspace\\CIT\\bin\\students.json"));
       } catch (FileNotFoundException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }
      
       Student[] students = gson.fromJson(br, Student[].class);
      
       return students;
   }
}

public class Course
{
   public int ID;
   public String Name;
   public float Credit;
  
}

import java.lang.reflect.Type;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;

public class DateDeserializer implements JsonDeserializer<Date> {

   @Override
   public Date deserialize(JsonElement element, Type arg1, JsonDeserializationContext arg2) throws JsonParseException {
       String date = element.getAsString();
      
       SimpleDateFormat formatter = new SimpleDateFormat("M/d/yy");
       formatter.setTimeZone(TimeZone.getTimeZone("UTC"));
      
       try {
           return formatter.parse(date);
       } catch (ParseException e) {
           //System.err.println("Failed to parse Date due to:", e);
           return null;
       }
   }
}

import java.util.List;

public class Faculty extends Person
{
   public int ID;
   public float Salary;
   public int[] teaching;
}

import java.util.*;
public class Person
{
public String fullname;
public String address;
public int Day;
public int Month;
public int Year;

}

public class Student extends Person
{
   public int StudentID;
   public float GPA;
   public int [] courses;
}