Muhammad P | Tester Class |
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package BramaleaLib;

import java.util.*;

public class Tester {


    public static void studentOptions(Library lib, Students users){
        Scanner test=new Scanner(System.in);
        boolean leave = false;
        do {
                        System.out.println("Press 1 Check out a book");
                        System.out.println("Press 2: Return a book");
                        System.out.println("Press 3: to Search for a book");
                        System.out.println("Press 4: to Compare two books");
                        System.out.println("Press 5: Log out");

                        int choice =test.nextInt();
                        switch (choice) {
                        case 1:
                            lib.checkout(users);
                         break;
                        case 2:
                           users.returnBooks(lib);
                            break;
                        case 3:
                            lib.search_books();
                            break;
                        case 4:
                        	lib.compare_books();
                        	break;
                        case 5:
                            leave = true;
                            break;
                        }
                    } while (leave == false);
    }
        public static void adminOptions(Library lib){
            String bookname = "", authorname = "", category = "";
            double cost = 0, rating = 0;
            int ISBN = 0;
            Scanner test=new Scanner(System.in);
            boolean leave = false;
            do {
                            System.out.println("Press 1 to list all students");
                            System.out.println("Press 2: To add a student");
                            System.out.println("Press 3: To remove a student");
                            System.out.println("Press 4: To search for a student");
                            System.out.println("Press 5: to add a book");
                            System.out.println("Press 6: to remove for a book");
                            System.out.println("Press 7: to search a book");
                            System.out.println("Press 8 to Compare Books");
                            System.out.println("Press 9: to Go to Menu");
                            int choice =test.nextInt();
                            switch (choice) {
                            case 1:
                                lib.liststudents();
                                 break;
                            case 2:
                                lib.add_students();
                                break;
                            case 3:
                                System.out.println("Enter Student Number: ");
                                Scanner scan=new Scanner(System.in);
                                int search= scan.nextInt();
                                lib.removestudents(search);
                                break;
                            case 4:
                                lib.search_students();
                                break;
                            case 5:

                                System.out.println("How many books would you like to add: ");
                                int numofstudents=test.nextInt();
                                int m ;

                                for(int i=0;i<numofstudents;i++)
                                {
                                     m = i+1;
                                    System.out.println("For the "+m+" book");
                                    test.nextLine();
                                    System.out.println("Enter book's name");
                                    bookname=test.nextLine();
                                    System.out.println("Enter the Author's Name");
                                    authorname=test.nextLine();
                                    System.out.println("Enter the ISBN number");
                                    ISBN=test.nextInt();
                                    test.nextLine();
                                    System.out.println("Please Enter the Genre of the book");
                                    category=test.nextLine();
                                    System.out.println("Please Enter the cost of the book");
                                    cost=test.nextDouble();
                                    System.out.println("Please Enter the Rating of the the book");
                                    rating =test.nextDouble();
                                    lib.add_books(bookname, authorname, ISBN, category, cost, rating);
                                }
                                    break;
                            case 6:
                            lib.remove_books();
                                break;
                            case 7:
                                lib.search_books();
                                break;
                            case 8:
                                lib.compare_books();
                            case 9:
                                leave = true;
                                break;
                            }
                        } while (leave == false);
        }


        public static void main(String[] args) {
            Students user = null;
            Library lib = new Library();
            Scanner test=new Scanner(System.in);
            boolean loop = true;

            while(loop){
                System.out.println("Bramalea Secondary School Library");
                System.out.println("Press 1: Student Login");
                System.out.println("Press 2: Admin Login");
                int x= test.nextInt();
                switch (x) {
                    case 1:
                    System.out.println("Enter student number: ");
                    int num = test.nextInt();
                    boolean isUser = false;
                    for (int counter = 0; counter < Library.students.size(); counter++){
                        if (Library.students.get(counter).getstudentid() == num){
                            isUser = true;
                            break;
                        }
                    }
                    if (isUser == true){
                        user = lib.search_studentsPlus(num);
                        System.out.println("Hello, Student ");
                        studentOptions(lib, user);
                    } else {
                        System.out.println("Not Student");
                    }



                             break;
                    case 2:
                    	System.out.println("Status: Librarian");
                        String password = "";
                        do{
                        	  System.out.println("please enter your admin password: ");
                              password=test.next();
                              if (password.matches("admin")){
                                  adminOptions(lib);

                              } else {
                                  System.out.println("Incorrect Password");
                              }
                          }while (!password.matches("admin"));

                  }
            }
        }
}
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Muhammad P | Library Class |
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package BramaleaLib;

import java.util.*;
import java.text.SimpleDateFormat;


public class Library {
    private ArrayList<Books> books = new ArrayList<Books>();
    public static ArrayList<Students> students=new ArrayList<Students>();

     public void add_students() {

     Scanner scan=new Scanner(System.in);

    System.out.println("How many students would you like to add: ");
    int numofstudents=scan.nextInt();
    for(int i=0;i<numofstudents;i++)
    {

       System.out.println("Enter first name");
        String firstname=scan.next();
        System.out.println("Enter last name");
        String lastname=scan.next();
        System.out.println("Enter student number");
        int studentNum=scan.nextInt();
        students.add((new Students(firstname, lastname, studentNum,0)));
        }
    }
    public void add_books(String bookname, String authorname, int ISBN, String category, double cost, double rating) {
       books.add(new Books(bookname, authorname, ISBN, category, cost, rating));
    }

    public void search_books() {
        {
        Scanner scan=new Scanner(System.in);
        System.out.println("Enter the ISBN of the book");
        int search= scan.nextInt();
        boolean check = true;
        for(int i = 0;i<books.size();i++){
            if (books.get(i).getISBN()==search)
            {
                System.out.println("Title: "+books.get(i).getTitle());
                System.out.println("Author Name: "+books.get(i).getAuthor());
                System.out.println("Genre: "+books.get(i).getCategory());
                System.out.println("Cost: "+books.get(i).getCost());
                System.out.println("ISBN: "+books.get(i).getISBN());
                System.out.println("Stars: "+books.get(i).getrating());
                System.out.println("\n");
                check = false;
            }
        }
             if(check==true){
                System.out.println("Sorry, We aren't currently carrying this Book.");
            }
    }
    }
    public void liststudents(){
        System.out.println("Student List");
        System.out.println("______________________________");
        System.out.println(" ");
        for(Students x : students){
            System.out.println("First Name: "+x.getfirstname());
            System.out.println("Last Name "+x.getlastname());
            System.out.println("Student Number: "+x.getstudentid());
            System.out.println("Student Fines: "+x.getstudentfines());
            System.out.println("\n");;
        }
    }
    public void compare_books(){
        Scanner scan=new Scanner(System.in);
        System.out.println("Enter the ISBN's of the books you want to compare:");
        int searchkey1= scan.nextInt();
        System.out.println("Enter the ISBn of the second book: ");
        int searchkey2= scan.nextInt();
        boolean check = true;
        for(int i =0; i<books.size();i++){

            if(books.get(i).getISBN()==(searchkey1)){
               System.out.println(" ");
               System.out.println("___________________________________");
               System.out.println("Title: "+books.get(i).getTitle());
               System.out.println("Author: "+books.get(i).getAuthor());
               System.out.println("Category: "+books.get(i).getCategory());
               System.out.println("ISBN: "+books.get(i).getISBN());
               System.out.println("Cost: "+books.get(i).getCost());
               System.out.println("Rating: "+books.get(i).getrating());
               System.out.println("");
               check = false;
            }
        }
             if(check==true){
                System.out.println("We are not carrying this book.");
            }
        for(int i =0; i<books.size();i++){

            if(books.get(i).getISBN()==(searchkey2)){
                System.out.println("______________________________________________");
               System.out.println("Title: "+books.get(i).getTitle());
               System.out.println("Author: "+books.get(i).getAuthor());
               System.out.println("Category: "+books.get(i).getCategory());
               System.out.println("ISBN: "+books.get(i).getISBN());
               System.out.println("Cost: "+books.get(i).getCost());
               System.out.println("Rating: "+books.get(i).getrating());
               System.out.println("");
               check = false;
            }
        }
        if(check==true){
            System.out.println("We are not carrying this book.");
    }
        }
    public void removestudents(int num) {
        boolean check = true;
        Scanner scan=new Scanner(System.in);
        for(int u = 0;u<students.size();u++){
            if (students.get(u).getstudentid() == num)
            {
                students.remove(u);
        }

       check = false;
        }
        if(check==true){
            System.out.println("Student Not found: ");
    }
}
        public void remove_books(){
            Scanner scan=new Scanner(System.in);
            System.out.println("Enter the ISBN of the book");
            int isbnsearch= scan.nextInt();
            boolean check = true;
            for(int i = 0;i<books.size();i++){
                if (books.get(i).getISBN()==isbnsearch)
                {
                    System.out.println("Title: "+books.get(i).getTitle());
                    System.out.println("Author: "+books.get(i).getAuthor());
                    System.out.println("Genre: "+books.get(i).getCategory());
                    System.out.println("Cost of book: "+books.get(i).getCost());
                    System.out.println("Get Book ISBN: "+books.get(i).getISBN());
                    System.out.println("Book Rating: "+books.get(i).getrating());
                    System.out.println("Are you sure you want to remove this book? (Y)es/(N)o");
                    String yes=scan.next();
                    yes.toLowerCase();
                    check = false;
                    if(yes.matches("y")){
                        books.remove(i);
                        System.out.println("This book has been Removed");
                }
                    else{
                        System.out.println("This book has not been Removed");
                    }
                    check = false;
                }

            }
            if(check==true){
                System.out.println("Book Does not Exist");
                System.out.println("-------------------------------------------");
            }
    }
        public void search_students() {
            {
            Scanner scan=new Scanner(System.in);
            System.out.println("Enter the Student Number: ");
            int search= scan.nextInt();
            boolean check = true;
            for(int i = 0;i<students.size();i++){
                if (students.get(i).getstudentid()==search)
                {
                    System.out.println("First Name: "+students.get(i).getfirstname());
                    System.out.println("Last Name: "+students.get(i).getlastname());
                    System.out.println("Student ID: "+students.get(i).getstudentid());
                    System.out.println("OutStanding Fines:  "+students.get(i).getstudentfines());
                    System.out.println();
                    System.out.println("\n");
                    check = false;
                }

            }
            if(check==true){
                System.out.println("Student has not been registered");
                System.out.println("-------------------------------------------");
            }
            }
        }

        public Students search_studentsPlus(int num) {
            Students s = null;
            for(int i = 0;i<students.size();i++){
                if (students.get(i).getstudentid()==num)
                {
                    s = students.get(i);
                }
            }
            return(s);
            }

        public void checkout(Students user) {
            showBooks();
            Scanner input = new Scanner(System.in);
            int index = 0;

            System.out.println("Please Enter the ISBN of the book");
            int search = input.nextInt();
            for(int i = 0;i<books.size();i++){
                if (books.get(i).getISBN()==search)
                {
                    index = i;
                    user.checkOut(books.get(i));
                    break;
                }

            }
            user.displayBooks();
            books.remove(index);
        }

        public void getBookBack(Books b){
            books.add(b);
        }

        public void showBooks(){
            int num = 1;
            for(Books moho : books){
                System.out.println(num + ") " + moho.getTitle() + " by " + moho.getAuthor() + " [ISBN: " + moho.getISBN() + "]");
                num++;
            }
        }
}
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Muhammad P | Student Class |
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package BramaleaLib;

import java.util.ArrayList;
import java.util.Scanner;

public class Students{

    private String firstname;
    private String lastname;
    private int studentid;
    private double studentfines;
    private ArrayList<Books> books = new ArrayList<Books>();

    public Students(String firstnam, String lastnam, int id,double fines)
    {
        firstname=firstnam;
        lastname=lastnam;
        studentid=id;
        studentfines=fines;
    }
    public String getfirstname() {
        return firstname;
    }
    public String getlastname() {
        return lastname;
    }
    public int getstudentid() {
        return studentid;
    }
    public double getstudentfines() {
        return studentfines;
    }
    public void checkOut(Books book){
        books.add(book);
    }
    public void returnBooks(Library lib){
         Scanner input=new Scanner(System.in);
        for(int i = 0; i < books.size(); i++){
            System.out.println("Press (" + i + ") to return: " + books.get(i).getTitle() + " by " + books.get(i).getAuthor());
            }
            int choice = input.nextInt();
            lib.getBookBack(books.get(choice));
            books.remove(choice);
    }

    public void displayBooks(){
        System.out.print(firstname + " " + lastname + " " + "(" + studentid + ") has: ");
        for(Books x : books){
            System.out.print(x.getTitle() + "\n");
        }
    }


}

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Muhammad P | Books Class |
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package BramaleaLib;

public class Books {

    private String title;
    private String author;
    private int ISBN;
    private String category;
    private double cost;
    private double rating;

        public Books (String titleofbook, String person, int ISBNnum, String genre, double costofbook, double starrating){
            title=titleofbook;
            author=person;
            ISBN= ISBNnum;
            category=genre;
            cost=costofbook;
            rating=starrating;
    }
        public String getAuthor() {
            return author;
        }
        public String getCategory() {
            return category;
        }
        public double getCost() {
            return cost;
        }
        public int getISBN() {
            return ISBN;
        }
        public double getrating() {
            return rating;
        }
        public String getTitle(){
            return title;
        }

}