Project Description: In this project, you must implement a public DigitalLibrary class that simulates a digital movie library. A DigitalLibrary object stores data about movies in an ArrayList of custom Film objects. The Film class is shown below and includes attributes such as title, cost, and year of release. You will create methods within the library class to add films, search by title, find the most expensive film, and find the oldest film.

public class Film $\{$

private String title;

private double cost;

private int year;

$//$ Constructor to initialize the Film object

public Film$($String title, double cost, int year$)\{$

this.title $=$ title;

this.cost $=$ cost;

this.year $=$ year;

$\}$

$//$ Getter for the title

public String getTitle$()\{$

return title;

$\}$

$//$ Getter for the cost

public double getCost$()\{$

return cost;

$\}$

$//$ Getter for the year

public int getYear$()\{$

return year;

$\}$

$//$ Override toString method to print film details easily

@Override

public String toString$()\{$

return $"[$Title: $\backslash ""+$ title $+"\backslash ",$ Cost: $$"+$ cost $+",$ Year: $"+$ year $+"]"$;

$\}$

$\}$

Requirements:

DigitalLibrary Class:

Private Attributes:

ArrayList films $-$ an array list that stores the film objects;

Constructor:

Initialize the films ArrayList as empty;

Public Methods:

getFilms$()$: Returns films;

addFilm$($String title, double cost, int year$)$: Appends a new film to the films;

findMostExpensiveFilm$()$: Returns the film with the highest cost;

findOldestFilm$()$: Returns the oldest film based on the year;

searchFilmByTitle$($String title$)$: Returns a film by its title. If no film is found, return null.