Final answer:
A Folder class represents a directory and manages multiple File and Sub-Folder objects, which are represented by the File class. Each class includes methods for setting, getting, and printing properties. The structure is printed, modified by deletion, and printed again using these methods.
Step-by-step explanation:
To model a simple file system using a Folder class and a File class, we need to ensure our Folder class can store and manage multiple Files and Sub-Folders. Each File should be contained within a Folder, and upon deletion of a Folder, all its contents should also be removed.
Folder Class
The Folder class should include:
- A list of Files
- A list of Sub-Folders
- Methods to add or remove Files and Sub-Folders
- A method to print all its contents
File Class
The File class should include:
- A property for the name of the file
- Methods to set and get the name
- A method to print the name of the file
To recreate and print the structure, we would instantiate the Folder and File objects accordingly, and call the print function on the 'php_demo1' folder. To simulate deletion, we would remove 'app' and 'public' folders and then print the structure again to reflect the changes.