AP Computer Science Unit 5 Test Question and answers already passed 2025

AP Computer Science Unit 5 Test
Question and answers already passed
2025
T/F A class is a blueprint for a type of Java object - correct answer ✔True


T/F A java object has data and behavior - correct answer ✔True


You can add behavior to an object by adding_____ to the class - correct
answer ✔methods


To make objects easily printable, write a ____ method that returns a text
representation - correct answer ✔toString


A class's ____ creates a new object that may contain initial values for the
fields - correct answer ✔constructor


Fields can be protected from external modification by making them ____ -
correct answer ✔private


T/F private fields can be directly changed from the client code - correct
answer ✔false


T/F A class is an instance of an object. One object can be used to create
many classes - correct answer ✔false


What is the term for having multiple constructors with different parameters -
correct answer ✔overloading

,What is the correct way to create a Name object - correct answer ✔Name n
= new Name("Will", "c", "Smith");


What is the correct way to create a Point object - correct answer ✔Point p =
new Point(2,3);


What what is true about code p1 and p2 with the same points - correct
answer ✔It creates two Point objects with identical data


A Pokémon object (p1) has a damage method. What is the correct way to call
the damage method - correct answer ✔p1.damage();


Methods that change an objects fields are called - correct answer
✔setters/mutators


A BankAccount object (acct) has a computeInterest method. What is the
correct way to call it - correct answer ✔double result =
acct.computeInterest(42);


What is the correct method header for the toString method - correct answer
✔public String toString() {


What is the correct syntax for a constructor for the Book class - correct
answer ✔public Book(String title, String author){


T/F A class may contain multiple constructors - correct answer ✔true

,T/F Constructors may call other constructors("chaining") - correct answer
✔true


T/F You can access fields inside a class's methods - correct answer ✔true


How do you access private fields from client code - correct answer ✔use
getters/setters


T/F A class can have a filed that is a array - correct answer ✔true


What is an instance method - correct answer ✔A method that can be called
using an object


T/F Getters and Setters are instance methods - correct answer ✔true


The Car class will contain two string attributes for a car's make and model.
The class will also contain a constructor.


public class Car
{
/* missing code */
}


Which of the following replacements for /* missing code */ is the most
appropriate implementation of the class?


A)
public String make;

, public String model;


public Car(String myMake, String myModel)
{ /* implementation not shown */ }


B)
public String make;
public String model;


private Car(String myMake, String myModel)
{ /* implementation not shown */ }


C)
private String make;
private String model;


public Car(String myMake, String myModel)
{ /* implementation not shown */ }


D)
public String make;
private String model;


private Car(String myMake, String myModel)
( /* implementation not shown */ }