ITSC 1213 TEST 3 REVIEW QUESTIONS AND CORRECT ANSWERS

ITSC 1213 TEST 3 REVIEW QUESTIONS AND
CORRECT ANSWERS


When applied to variables, methods, or objects, polymorphism enables these entities to
- Answers - have multiple forms

Polymorphism treats objects that inherit from the same superclass as if they were
actually objects of that superclass - Answers - True

Given that the Leg class extends the BodyPart class, would the following code compile?

BodyPart bp = new Leg(); - Answers - Yes

The test that helps us determine whether or not an object can be assigned to a
reference variable is known as a ______ test - Answers - IS-A

If you declare the parameter of a method to be of a superclass type, you can class that
method with a subclass argument - Answers - True

What would be the result of compiling the following code

public final class Body Part {}
public class Arm extends BodyPart {} - Answers - A compiler error because final classes
cannot be extended

public final class BodyPart { public void tattoo() { } } The class definition above
guarantees that - Answers - the tattoo method cannot be overridden

What would be the effect of the following code:

public class BodyPart { }

public class Leg extends BodyPart { }

Leg l = new BodyPart(); - Answers - A compiler error because a subclass reference
variable cannot be assigned a superclass object

Given the following definitions:

abstract public class Manager extends Employee { ... }
public class Executive extends Manager { ... }

What, if anything, is wrong with the following code?