Person: This class represents a person, which can be a borrower or a librarian. It can have attributes such as name, address, email, etc.

public class Person {
    private String name;
    private String address;
    private String email;
    private String phone;
    private String id;

    public Person(String name, String address, String email, String phone, String id) {
        this.name = name;
        this.address = address;
        this.email = email;
        this.phone = phone;
        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 String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;