Java Assignment Instructions:

Create an Abstract Class $-$ MediaItem:

Fields: title, author, ISBN, publicationYearMethods:

Constructor for initializing fields. An abstract method displayInfo$().$Standard getter and setter methods.

Create Subclasses for Different Media Types:

Book Class: Inherits from MediaItem

Additional Fields: genre, pageCountImplement displayInfo$()$ to print all fields, including the type "Book."

Magazine Class: Inherits from MediaItem

Additional Fields: issueNumber, monthlyEditionImplement displayInfo$()$ to print all fields, including the type "Magazine."

EBook Class: Inherits from MediaItem

Additional Fields: fileSizeMB, fileFormatImplement displayInfo$()$ to print all fields, including the type $"$E$-$Book."

File I$/$O $-$ Saving and Loading Media Items:

Write a method saveToFile$($String filename$)$ to save the list of MediaItem objects to a text file. The file should include details of each item, distinguishing each type of media. Write a method loadFromFile$($String filename$)$ to read and create MediaItem objects from a file. Implement exception handling to manage issues like missing files or incorrect formatting.

Exception Handling:

Create a custom exception class InvalidMediaFormatException. Throw this exception if the data format read from the file does not match the expected structure. Handle standard exceptions, such as FileNotFoundException and IOException, within loadFromFile.

Main Application Class $-$ LibraryManager:

Menu Options:

Add a new media item $($book$,$ magazine, or e$-$book$).$Display all media items.Save media items to a file.Load media items from a file.

Search Functionality:

Add a method to search for items by title or author using String.contains$()$ to locate partial matches.

String Manipulation and Formatting:

Implement methods for string manipulation, such as formatting output in displayInfo$()$ and ensuring consistent data entry formats $($e$.$g$.,$ capitalizing titles$).$