QUESTION 29

1. A(n) ____ looks much like a class, except that all of its methods (if any) are implicitly public and abstract.

   	a.	interface
   	b.	package
   	c.	collision
   	d.	hash code

QUESTION 28

1. When you create a class and use the implements clause to implement an interface but fail to code one of the interfaces methods, the compiler error generated indicates that you must declare your class to be ____.

   	a.	public
   	b.	related
   	c.	static
   	d.	abstract