Using super in a Child's Method

Using super in a Child's Method

Sometimes (as in the example) you want a child class to have its own method, but that method includes everything the parent's method does. You can use the super reference in this situation. For example, here is Video's method:

public void show()
{
  System.out.println( title + ", " + length + " min. available:" + avail );
}

Here is Movie's method without using super:

public void show()
{
  System.out.println( title + ", " + length + " min. available:" + avail );
  System.out.println( "dir: " + director + "  " + rating );  
}

Movie's method would better be written using super:

public void show()
{
  super.show();
  System.out.println( "dir: " + director + "  " + rating );  
}

Unlike the case when super is used in a constructor, inside a method super does not have to be used in the first statement.