The new class definition is (in part) below.
The MusicVideo class is a subclass of VideoTape.
A skeleton of the definition is below.
The Movie class is not shown,
but is also a subclass of VideoTape.
Remember that a class can have several subclasses.
class VideoTape
{
  String  title;    // name of the item
  int     length;   // number of minutes
  boolean avail;    // is the tape in the store?
  // constructor
  public VideoTape( String ttl, int lngth )
  {
    title = ttl; length = lngth; avail = true; 
  }
  public void show()
  {
    System.out.println( title + ", " + length + " min. available:" + avail );
  }
  
}
class MusicVideo extends VideoTape
{
  String artist;
  String category;
  // The constructor will go here
  // The show() method will go here
}