North Georgia College & State University
Department of Mathematics & Computer Science
CSCI 1302, Computer Science I
Summer 2002 7/10/02
Test2, 150 points, each question worth 10 point
Name________ Seat Numbers_____
MULTIPLE CHOICE (Circle one only)
1. Which of the following is correct in Java
a. Every class that does not specifically extend another class is a subclass of the class
Object
b. When you declare a class you must specifically extend it from class Object
c. The class Object has no methods of its own
d. The class Object has no subclass
2. Select the incorrect answer about interface
a. An interface is not a class
b. An interface has no state and no behavior
c. An interface tells you which method you should implement
d. An interface is a class
3. Which of the following is incorrect about inheritance
a. Inheritance adds additional complexity to a java program
b. Inheritance allows reuse of code
c. We can inherit from exiting Java classes and create user defined classes
d. To declare inheritance we use the word extends
4. Select the incorrect answer about inheritance
a. You can override methods from the superclass
b. You can only inherit instance variables from the superclass
c. You can inherit methods from the superclass
d. You can define new methods in the subclass.
5. Select the incorrect answer about inheritance
a. You can override instance variables from the superclass
b. You can inherit methods from the superclass
c. You can inherit instance variables from the superclass
d. You can define new fields in the subclass.
6. Assume deposit() is a method of the super class BankAccount. Which of the following is
correct.
a. public class CheckingAccount extends BankAccount
{
public void deposit(double amount);
{
deposit(super.amount);
. . .
}
}
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