It's java damnit EVERYTHING is an object
command format = 
    0. $
    1. command string
    2. argument string

file formats =
    file
        0. integer size
        1. string name
    dir
        0. keyword "dir"
        1. string dirName

===function Main
Create ArrayList of directory objects
Open file
Read line into buffer string array split on spaces


Loop while file has contents
    
Declare Class "directory"
    - private string dirName
    - private string parentDirName
    - private ArrayList fileContents[]
        - int fileSize
    - private ArrayList subDirs[]
        - yo mr. white we're recursin here
    
    Methods:
        getDirSize - needs to step through subdirs, plus sum ints in file sizes
        addDir - create new directory object and append to subDirs ArrayList
        addFile - add to fileContents ArrayList
        rmDir - remove specified dir from subDirs ArrayList - not necessary for this scope probably
        getParentDir - name's on the tin
        getDirName - ditto
        getAllDirSizes - i mean while i'm here might as well make the class do it