A good answer might be:

The blanks are filled in, below:

super()

Parts of the superclass (the parent class) that we want to re-use can be accessed by using super. In the constructor, super must appear before anything else (although in this example there isn't anything else.) 

class YouthBirthday  extends  Birthday

{
  public  YouthBirthday ( String r, int years )
  {
    super ( r, years )
  }

  public void greeting()
  {
    super.greeting();
    System.out.println("How you have grown!!\n");
  }
}

When the greeting() method of a YouthBirthday object is invoked, first its superclass's method will run, then the rest of the new method will run.

QUESTION 8:

What will be written by the following: 

YouthBirthday yb = new YouthBirthday( "Valerie", 7 );
yb.greeting();

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