OOP – Inheritance – Q&A

Class File:​
   private filename​
   
   //Constructor for the File class
   procedure new(strFilename):​
      filename = strFilename​

   public procedure rename(strFilename)​
      if strfilename!="":​
         filename = strFilename​

Class MP3 inherits File:​
  private title​
  private artist​
  private duration​

  //Constructor for the MP3 class
  procedure new(strFilename, strTitle, strArtist, intDuration):​
     super.new(strfilename)​
     title = strTitle       ​
     artist = strArtist​
     duration = strDuration​

  public function getDuration():​
     min = duration // 60​
     sec = duration % 60​
     return (str(min) + ":" + str(sec))

What code would you write to instantiate one new MP3 object called topTrack for the latest 3 minutes 12 seconds song “Shivers” from Ed Sheeran?

What are all the methods and properties of the MP3 class?

Explain, using an example from this code, what is meant by inheritance?