file system

class FileEntity
{
  // members common to File & Folder
  // create, copy, delete, move, getInfo, open, etc
};

class Folder : public FileEntity
{
  // a folder can have multiple FileEntity (folders or files)
  vector<FileEntity> m_VecFileEntity;
  // members of Folder
};

class File : public FileEntity
{
  // members of File
};

class Drive
{
  // members of Drive
  // getFreeSpace, getTotalSpace, createPartition, etc
};

class FileSystem
{
  vector<FileEntity> m_VecFileEntity;
  vector<Drive> m_vecDrives;

interface BaseFileSystem
{
/*Basic file/folder attributes are:
1. File/Folder Size
2. File/Folder Date created
3. File/Folder Date Modified
4. File/Folder permissions - Read, write and execute
5. File/Folder Owner - Owner of the file who defines permissions for other users
6. File/Folder Visibility - Hidden or Visible
7. File/Folder Name

  Hence each one of the above attributes would have public <return type> get() and public void set<AttributeName>(<variable datatype>) */

}

public class File implements BaseFileSystem
{
/The File class should implement all of the methods from interface BaseFilesystem.
In addition, it must also implement following specific methods that can only be associated with physical files/

    public String getFileExtension(){….}

    public void setFileExtension(String value) {….}

    public String[] getAssociatedPrograms(){ …..}

    public void executable(){ …. };

}

public class Folder implements BaseFileSystem
{

  /*The `Folder` class should implement all of the methods from interface `BaseFileSystem`. In addition, it must also implement following specific methods that can only be associated with the physical 'folders'*/

    public BaseFileSystem[] getSubFoldersAndFiles(){ …. }