Answer:
Yes — looks like we wrote the same code twice.
Yes — looks like we wrote the same code twice.
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 String toString()
{
System.out.println( title + ", " + length + " min. available:" + avail );
}
Here is Movie's method without using super:
public String toString()
{
return title + ", " + length + " min. available:" + avail +
" dir: " + director + ", rating: " + rating ;
}
Movie's method would better be written using super:
public String toString()
{
return super.toString() + "dir: " + director + ", rating: " + rating ;
}
Unlike the case when super is used in a constructor,
when super is used in a method it does not have to be the first statement.
Think of two reasons why using super in this way is
a good thing to do.