you have the following java classes : package com.mycompany.librarysystem;

import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Scanner;

/** *

• @author karamyzx */ public class LibrarySystem {

  public static void main(String[] args) { Library library = new Library(); Scanner scan = new Scanner(System.in);

   int choice;
   do {
       System.out.println("Library Management System Menu:");
       System.out.println("1. Add Student");
       System.out.println("2. Add Book");
       System.out.println("3. Loan Book");
       System.out.println("4. Return Book");
       System.out.println("5. Search Book by Title");
       System.out.println("6. Search Book by Author");
       System.out.println("7. Search Book by No");
       System.out.println("8. Loaned books list");
       System.out.println("9. Exit");
       System.out.print("Enter your choice: ");
  
       choice = scan.nextInt();
       scan.nextLine(); // Consume the newline character.
  
       switch (choice) {
           case 1 -> {
               System.out.println("Enter the student id: ");
               int id = scan.nextInt(); //The student id input.
               scan.nextLine(); // Consume the newline character left in the input buffer after reading the integer.
  
               System.out.println("Enter the student name: ");
               String name = scan.nextLine(); //The student name input.
  
               System.out.println("Enter the student address: ");
               String address = scan.nextLine(); //The student address input.
  
               // The student birthDate input
               SimpleDateFormat birthDate = new SimpleDateFormat("dd/MM/yyyy");
               boolean validInput = false; // When the date is entered correctly, the value of this variable becomes true.
               while (!validInput) {
                   System.out.println("Enter the student birth date (in format dd/MM/yyyy): ");
                   String userInput = scan.nextLine();
                   Date parsedDate;
                   try {
                       parsedDate = birthDate.parse(userInput); //parsing the String to a Date Format.
                       System.out.println("Parsed Date: " + parsedDate);
                       validInput = true;
                   } catch (ParseException e) {
                       System.out.println("Invalid date format. Please enter date in dd/MM/yyyy format.");
  
                   }
               }
  
               // The student Major input
               System.out.println("Enter the student major: ");
               String major = scan.nextLine();
  
               // Confirm adding the student
               System.out.println("Are you shure to add the student " + name
                       + "\n" + "With ID : " + id
                       + "\n" + "address: " + address
                       + "\n" + "birth date: " + birthDate
                       + "\n" + "major: " + major
                       + "\n" + "press (y) or (Y) for yes, or any another key to cancel.");
  
               String inputKey = scan.nextLine(); //The student addition confirmation Key.
  
               //Print the confirmation result
               if (inputKey.equalsIgnoreCase("Y")) {
                   System.out.println("The student " + name + " is added to the system :). ");
               } else {
                   System.out.println("The add request is canceled");
                   break;
               }
               Student student = new Student(id, name, address, birthDate, major); //Create a new Student object.
               library.addStudent(student); //Add the new student to the ArrayList students.
           }
           //--------------------------------------------------------------------------------------------------------------
           //Book Addition
  
           case 2 -> {
               System.out.println("Enter the Book Title: ");
               String title = scan.nextLine(); //The Book title input.
  
               System.out.println("Enter the Book Genre: ");
               String genre = scan.nextLine(); //The Book genre input.
  
               System.out.println("Enter the Book Version: ");
               int version = scan.nextInt(); //The Book version input.
               scan.nextLine(); // Consume the newline character left in the input buffer after reading the String.
  
               // The student birthDate input
               SimpleDateFormat date = new SimpleDateFormat("dd/MM/yyyy");
               boolean validInput = false; // When the date is entered correctly, the value of this variable becomes true.
               while (!validInput) {
                   System.out.println("Enter the book date (in format dd/MM/yyyy): ");
                   String userInput = scan.nextLine();
                   Date parsedDate;
                   try {
                       parsedDate = date.parse(userInput); //parsing the String to a Date Format.
                       System.out.println("Parsed Date: " + parsedDate);
                       validInput = true;
                   } catch (ParseException e) {
                       System.out.println("Invalid date format. Please enter date in dd/MM/yyyy format.");
                   }
               }
  
               // The Book Author input.
               System.out.println("Enter the book author name: ");
               String authorName = scan.nextLine();
  
               Author author = new Author();
               // Checking if the Author is exists in the System.
               if (library.searchByAuthor(authorName) == null) { // Author not found
                   System.out.println("We did't found this author in our system, Please enter the rest of author data to add it to this System");
                   System.out.println("Enter the Author address: ");
                   String authorAddress = scan.nextLine();
  
                   // The bookAuthor birthDate input
                   SimpleDateFormat authorBirthDate = new SimpleDateFormat("dd/MM/yyyy");
                   boolean validInput2 = false; // When the date is entered correctly, the value of this variable becomes true.
                   while (!validInput2) {
                       System.out.println("Enter the Author birth date (in format dd/MM/yyyy): ");
                       String userInput2 = scan.nextLine();
                       Date parsedDate2;
                       try {
                           parsedDate2 = authorBirthDate.parse(userInput2); //parsing the String to a Date Format.
                           System.out.println("Parsed Date: " + parsedDate2);
                           validInput2 = true;
                       } catch (ParseException e) {
                           System.out.println("Invalid date format. Please enter date in dd/MM/yyyy format.");
                       }
                       //Add the author.
                       author = new Author(authorName, authorAddress, authorBirthDate);
  
                   }
               } else {
                   author = library.getAuthorByName(authorName);
               }
  
               // Confirm adding the author.
               System.out.println("Are you shure to add the Book " + title
                       + "\n" + "Genre : " + genre
                       + "\n" + "Version: " + version
                       + "\n" + "Date: " + date
                       + "\n" + "Author: " + authorName
                       + "\n" + "press (y) or (Y) for yes, or any another key to cancel.");
               String inputKey = scan.nextLine(); //The Book Addition Confirmation Key.
  
               //Print the confirmation result.
               if (inputKey.equalsIgnoreCase("Y")) {
                   System.out.println("The Book " + title + " is added to the system :). ");
               } else {
                   System.out.println("The add request is canceled");
                   break;
               }
               Book book = new Book(title, author, genre, version, date); //Create a new Book object.
               library.addBook(book); //Add the new Book to the ArrayList books.
  
           }
           case 3 -> {
               int choice1;
               Book book = null;
               Student student = null;
               do {
                   System.out.println("""
                                      Please choose an option: 
                                      1-) Enter book number.
                                      2-) Enter book title.""");
                   System.out.println("Enter your choice: ");
                   choice1 = scan.nextInt();
                   scan.nextLine(); // Consume the newline character left in the input buffer after reading the integer.
                   
                   switch (choice1) {
                       case 1 -> {
                           System.out.println("Please enter the book number");
                           int bookNo = scan.nextInt();
                           book = library.searchByNo(bookNo);
                           if (book == null) {
                               System.out.println("we didn't find this book!, Please retry again");
                               choice1 = 3;
                           }
                           break;
                       }
                       case 2 -> {
                           System.out.println("Please enter the book title");
                           String bookTitle = scan.nextLine();
                           scan.nextLine(); // Consume the newline character left in the input buffer after reading the integer.
                           book = library.searchByTitle(bookTitle);
                           if (book == null) {
                               System.out.println("we didn't find this book!, Please retry again");
                               choice1 = 3;
                           }
                       }
                       default ->
                           System.out.println("Invalid option");
                   }
               } while (choice1 < 0 || choice1 > 2);
  
               if (book.inLoan() == true) {
                   System.out.println("Sorry, This book is Loaned!");
                   break;
               }
  
               boolean stuValidation = false;
               while (stuValidation) {
                   System.out.println("Please enter the student ID");
                   int studentId = scan.nextInt();
                   student = library.findStudentById(studentId);
                   if (student == null) {
                       System.out.println("The student ID is Invalid");
  
                   } else {
                       stuValidation = true;
                   }
               }
  
               // Confirm Loan process.
               System.out.println("Are you sure you want to Loan the following book" + book.getTitle()
                       + "\n" + " genre: " + book.getGenre()
                       + "\n" + "Version: " + book.getVersion()
                       + "\n" + "Date: " + book.getDate()
                       + "\n" + "Author: " + book.getAuthor()
                       + "for the student with student:" + student.getName()
                       + " with ID:" + student.getId()
                       + "\n" + "press (y) or (Y) for yes, or any another key to cancel.");
               String inputKey = scan.nextLine(); //The Book Addition Confirmation Key.
  
               //Print the confirmation result.
               if (inputKey.equalsIgnoreCase("Y")) {
                   library.loanBook(student, book);
                   System.out.println("The Book " + book.getTitle() + " is loaned successfully :).");
               } else {
                   System.out.println("The loan request is canceled");
                   break;
               }
               break;
           }
           case 4 -> {
               
           }
           case 5 -> {
           }
           case 6 -> {
           }
           case 7 -> {
           }
           case 8 -> {
           }
           case 9 ->
               System.out.println("Exiting... Thank you!");
           default ->
               System.out.println("Invalid choice. Please enter a valid option.");
       }
  
   } while (choice != 9);

  } } import java.util.ArrayList; import java.util.Collection; import java.util.Date; import java.util.List;

public class Library {

private Collection<Book> books;
private Collection<Student> students;
private Collection<Loan> loans;

public Library() {
    books = new ArrayList<>();
    students = new ArrayList<>();
    loans = new ArrayList<>();

}

// Methods for book management
public void addBook(Book book) {
    books.add(book);
}

   public Book searchByNo(int number) {
    for (Book book : books) {
        if (book.getNo() == number) {
            return book;
        }
    }
    return null;
}

public Book searchByTitle(String title) {
    for (Book book : books) {
        if (book.getTitle().equalsIgnoreCase(title)) {
            return book;
        }
    }
    return null;
}

public List<Book> searchByAuthor(String authorName) {
    List<Book> foundBooks = new ArrayList<>();
    for (Book book : books) {
        if (book.getAuthor().getName().equalsIgnoreCase(authorName)) {
            foundBooks.add(book);
        }
    }
    return foundBooks;
}

// Methods for student management
public void addStudent(Student student) {
    students.add(student);
}

public Student findStudentById(int id) {
    for (Student student : students) {
        if (student.getId() == id) {
            return student;
        }
    }
    return null;
}

// Methods for loan handling
public boolean loanBook(Student student, Book book) {
    if (student.getNumLoans() < 3 && !book.inLoan()) {
        Loan loan = new Loan(book, student);
        loans.add(loan);
        book.setOnLoan(true);
        student.incrementNumLoans();
        return true;
    }
    return false;
}

public boolean returnBook(Book book) {
    for (Loan loan : loans) {
        if (loan.getBook().equals(book)) {
            loans.remove(loan);
            book.setOnLoan(false);
            loan.getStudent().decrementNumLoans();
            return true;
        }
    }
    return false;
}

// Method to check overdue loans
public List<Loan> getOverdueLoans() {
    List<Loan> overdueLoans = new ArrayList<>();
    for (Loan loan : loans) {
        if (loan.isOverdue()) {
            overdueLoans.add(loan);
        }
    }
    return overdueLoans;
}

// Getters for books, students, and loans in the library
public Collection<Book> getBooks() {
    return books;
}

public Collection<Student> getStudents() {
    return students;
}

public Collection<Loan> getLoans() {
    return loans;
}


public Author getAuthorByName(String nameToFind) {
    for (Book book : books) {
        if (book.getAuthor().getName().equalsIgnoreCase(nameToFind)) {
            return book.getAuthor(); // Found the author by name, return it
        }
    }
    return null; // Author not found
}

} import java.text.SimpleDateFormat;

public class Author { private int id; private String name; private String address; private SimpleDateFormat birthDate; private static int count; public Author(String name, String address, SimpleDateFormat birthDate) { this.id = count++; this.name = name; this.address = address; this.birthDate = birthDate; }

Author() {
    
}

// Getters and Setters for the Author attributes
public int getId() {
    return id;
}

public void setId(int id) {
    this.id = id;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public String getAddress() {
    return address;
}

public void setAddress(String address) {
    this.address = address;
}

public SimpleDateFormat getBirthDate() {
    return birthDate;
}

public void setBirthDate(SimpleDateFormat birthDate) {
    this.birthDate = birthDate;
}

// Method to get information about the author
public String getInfo() {
    return "Author ID: " + id + "\nName: " + name + "\nAddress: " + address + "\nBirth Date: " + birthDate.toString();
}

}

package com.mycompany.librarysystem;

import java.text.SimpleDateFormat;

/** *

• @author karamyzx */

public class Book implements Display {

private String title;
private Author author;
private int no;
private String genre;
private int version;
private SimpleDateFormat date;
private boolean onLoan;
private static int count = 0;

public Book(String title, Author author, String genre, int version, SimpleDateFormat date) {
    this.title = title;
    this.author = author;
    this.no = count++;
    this.genre = genre;
    this.version = version;
    this.date = date;
    this.onLoan = false; // Initially not on loan
}

public String getTitle() {
    return title;
}

public void setTitle(String title) {
    this.title = title;
}

public Author getAuthor() {
    return author;
}

public void setAuthor(Author author) {
    this.author = author;
}

public int getNo() {
    return no;
}

public void setNo(int no) {
    this.no = no;
}

public String getGenre() {
    return genre;
}

public void setGenre(String genre) {
    this.genre = genre;
}

public int getVersion() {
    return version;
}

public void setVersion(int version) {
    this.version = version;
}

public SimpleDateFormat getDate() {
    return date;
}

public void setDate(SimpleDateFormat date) {
    this.date = date;
}

public boolean isOnLoan() {
    return onLoan;
}

public void setOnLoan(boolean onLoan) {
    this.onLoan = onLoan;
}

@Override
public String getInfo() {
    return "Title: " + title + "\nAuthor: " + author.getName() + "\nNo: " + no + "\nGenre: " + genre
            + "\nVersion: " + version + "\nDate: " + date.toString();
}

@Override
public boolean inLoan() {
    throw new UnsupportedOperationException("Not supported yet."); // Generated from nbfs://nbhost/SystemFileSystem/Templates/Classes/Code/GeneratedMethodBody
}

} */ package com.mycompany.librarysystem;

/** *

• @author karamyzx */ public interface Display { String getInfo(); boolean inLoan();
  } package com.mycompany.librarysystem;

/** *

• @author karamyzx */ import java.text.SimpleDateFormat;

public class Journal extends Book{ private int ConferenceNo; private String ConferenceName;

public Journal(int ConferenceNo, String ConferenceName, String title, Author author, String genre, int version, SimpleDateFormat date) {
    super(title, author, genre, version, date);
    this.ConferenceNo = ConferenceNo;
    this.ConferenceName = ConferenceName;
}

public int getConferenceNo() {
    return ConferenceNo;
}

public void setConferenceNo(int ConferenceNo) {
    this.ConferenceNo = ConferenceNo;
}

public String getConferenceName() {
    return ConferenceName;
}

public void setConferenceName(String ConferenceName) {
    this.ConferenceName = ConferenceName;
}

@Override
public String toString() {
    return "Journal{" + "ConferenceNo=" + ConferenceNo + ", ConferenceName=" + ConferenceName + '}';
}

} package com.mycompany.librarysystem;

/** *

• @author karamyzx */ import java.text.SimpleDateFormat;

public class Magazine extends Book {

private int issueNo;
private SimpleDateFormat releaseDate;

public Magazine(int issueNo, SimpleDateFormat releaseDate, String title, Author author, String genre, int version, SimpleDateFormat date) {
    super(title, author, genre, version, date);
    this.issueNo = issueNo;
    this.releaseDate = releaseDate;
}

public int getIssueNo() {
    return issueNo;
}

public void setIssueNo(int issueNo) {
    this.issueNo = issueNo;
}

public SimpleDateFormat getReleaseDate() {
    return releaseDate;
}

public void setReleaseDate(SimpleDateFormat releaseDate) {
    this.releaseDate = releaseDate;
}

@Override
public String toString() {
    return "Magazine{" + "issueNo=" + issueNo + ", releaseDate=" + releaseDate + '}';
}

} ackage com.mycompany.librarysystem;

/** *

• @author karamyzx */ import java.text.SimpleDateFormat;

public class Student { private int id; private String name; private String address; private SimpleDateFormat birthDate = new SimpleDateFormat("dd/MM/yyyy");; private String major; private int numLoans;

public Student(int id, String name, String address, SimpleDateFormat birthDate, String major) {
    this.id = id;
    this.name = name;
    this.address = address;
    this.birthDate = birthDate;
    this.major = major;
    this.numLoans = 0; // Initially doesn't loan any book
}

public int getId() {
    return id;
}

public void setId(int id) {
    this.id = id;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public String getAddress() {
    return address;
}

public void setAddress(String address) {
    this.address = address;
}

public SimpleDateFormat getBirthDate() {                                                                                              package com.mycompany.librarysystem;

/** *

• @author karamyzx */ import java.time.LocalDate;

public class Loan { private Book book; private Student student; private LocalDate dueDate;

public Loan(Book book, Student student) {
    this.book = book;
    this.student = student;
    this.dueDate = LocalDate.now().plusDays(5);
}

// Getters and Setters for the Loan attributes
public Book getBook() {
    return book;
}

public void setBook(Book book) {
    this.book = book;
}

public Student getStudent() {
    return student;
}

complete the main switch statement corresponding to the options writen.

Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.10.1:compile (default-compile) on project LibrarySystem: Fatal error compiling: error: invalid target release: 21 -> [Help 1]

To see the full stack trace of the errors, re-run Maven with the -e switch. Re-run Maven using the -X switch to enable full debug logging. explain the bug