AP CSA Code HS section 2 Questions and Answers (Passed with 100%)
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Course
Code HS
Institution
Code HS
What is an object in Java? An object is something that contains both state and behavior.
Which of the following best describes the relationship between a class and an object? A class
definition specifies the attributes and behavior of every object that will be made.
Every class definition ha...
AP CSA Code HS section 2 Questions
and Answers (Passed with 100%)
What is an object in Java? ✔✔An object is something that contains both state and behavior.
Which of the following best describes the relationship between a class and an object? ✔✔A class
definition specifies the attributes and behavior of every object that will be made.
Every class definition has each of the following EXCEPT
A name
Defined attributes
Defined behaviors to manipulate the state of the objects
Defined objects as copies of the class ✔✔Defined objects as copies of the class
Consider this class definition of a Pineapple.
public class Pineapple
{
private boolean isRipe;
,private String color;
private double weight;
// Rest of class goes here
}
When we use this class to create Pineapple objects, which of the following is guaranteed to be
true? ✔✔Every Pineapple object will have the same attributes.
What is a constructor in Java? ✔✔A constructor allows us to create a new instance of a class,
usually initializing instance variables.
Refer to the Card class shown below.
public class Card
{
private String suit;
private int value; //13 values for each suit in deck (0 to 12)
public Card (String cardSuit, int cardValue)
,{ /* implementation */}
// Rest of the class goes here
}
Which of the following is the correct /* implementation */ code for the constructor in the Card
class? ✔✔suit = cardSuit;
value = cardValue;
public class Shark
{
// Attributes
private String habitat;
private int age;
public Shark(String region, int sharkAge)
{
habitat = region;
age = sharkAge;
, }
}
Which of the following choices is a formal parameter of the constructor? ✔✔sharkAge
What is the purpose of overloading a class' constructor? ✔✔It allows the user to set the values of
different combinations of the instance variables when the object is created.
Which of the following is NOT part of the constructor signature? ✔✔Which instance variables
are initialized
Which of the following is NOT a valid way to overload this constructor? For brevity, only the
signature is given.
Pineapple Pineapple(String color)
a. Pineapple Pineapple()
b. Pineapple Pineapple(String color, int age)
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