The finished class is given below.
MusicVideo Class
The show() method for MusicVideo 
can use super.show() where ever it needs to.
It is the  first statement (below) because that is
where it makes the most sense.
class VideoTape
{
  // stuff ommitted here
  public void show()
  {
    System.out.println( title + ", " + length + " min. available:" + avail );
  }
  
}
class MusicVideo extends VideoTape
{
  String artist;
  String category;
 
  // constructor
  public MusicVideo ( String ttl, int len, String art, String cat )
  {
    super( ttl, len );
    artist   = art;
    category = cat;
  }
  
  public void show()
  {
    super.show();
    System.out.println( "artist:" + artist + " style: " + category );
  }
}