JAVA

1. Assume DerivedClass is derived from BaseClass and we have a reference variable for each: subRef and baseRef, respectively. Assume baseRef has been instantiated but subRef has not.

True or False: At this point in the program, we can do the following without a compiler error:

 subRef = (DerivedClass) baseRef;

True

False

2.

The statements

 Card card1, card2, card3, myCard; card1 = new Card(); card2 = card1; 

will cause how many card objects to be instantiated? (only one correct choice):

A 4

B

1

C

0

D

2

E 3

3.

Another name for an object is a(n)...

a

class

b

exception

c

array

d

instance