CSCI 2010 - Quiz 1-10 and answers verified to pass 2025

CSCI 2010 - Quiz 1-10 and answers
verified to pass 2025
Only one constructor may be defined per class. - correct answer ✔False


What is a method? - correct answer ✔A member of a class that defines an
operation on an object.


A classed called Printer has a method called printDocument. This calls a void
method in the Printer class called printPage that takes an integer representing
the page number as an argument. How should printDocument call printPage
with an argument of 4? - correct answer ✔printPage(4);


Given a class called Rectangle with a constructor that takes two doubles as
arguments representing the dimensions, which of the following is the correct
way to invoke that constructor? - correct answer ✔Rectangle rect = new
Rectangle(8.2, 3.5);


Consider the following code:


Employee emp1 = new Employee();
emp1.setName("Anna Karenina");
Employee emp2 = new Employee();
emp2.setName("David Copperfield"):
emp2 = emp1;


Which of the following best describes the contents of the two variables emp1
and emp2 after this code has executed? - correct answer ✔emp1 refers to
the object with the name Anna Karenina. emp2 refers to the same object.

,Given the following method header:


public double computeArea(double length, double width)


Which of the following would be a legal overloaded method in the same class?
- correct answer ✔public double computeArea(double length)


When calling a method from another method in the same class, the form
methodName() is equivalent to this.methodName(). - correct answer ✔True


Regular methods may be overloaded, but a constructor may not be
overloaded. - correct answer ✔False


All methods must return a value. - correct answer ✔False


What is the difference between a static variable and an instance variable? -
correct answer ✔A static variable is shared by all objects of a class. Every
object has its own version of an instance variable.


What is decompostion? - correct answer ✔A design strategy that breaks a
task down into several subtasks.


What is the difference between an accessor method (or getter) and a mutator
method (or setter)? - correct answer ✔An accessor method returns data
contained in an instance variable. A mutator method modifies data contained
in an instance variable.


Given the following header for a method in the class Demo:

, public static double smallest(double[] data)


Which of the following is the correct way to call this method, given an array of
doubles called values? - correct answer ✔double min =
Demo.smallest(values);


Given the following initial array:


{'P', 'A', 'U', 'S'}


Which of the the following correctly illustrates the sequence of passes
performed by selection sort? - correct answer ✔{'P', 'A', 'U', 'S'}
{'A', 'P', 'U', 'S'}
{'A', 'P', 'U', 'S'}
{'A', 'P', 'S', 'U'}


Assume there is a class called Trombone with a default constructor. Which of
the following is the correct way to create and initialize an array of 76
Trombone objects? - correct answer ✔Trombone[] marchingBand = new
Trombone[101];for(int i = 0; i < marchingBand.length; i++)marchingBand[i] =
new Trombone();


Given an array called items, what is the correct way of determining the
number of elements in the array? - correct answer ✔items.length


Which of the following is the correct way to declare an array of 12 integers in
Java? - correct answer ✔int[] numbers = new int[12];