AP Computer Science Practice Exam A 2024

AP Computer Science Practice Exam A 2024
Consider the following method.



public static int mystery(int[] arr)

{

int x = 0

for (int k = 0; k < arr.length; k = k + 2)

x = x + arr[k]

return x;

}

Assume that the array nums has been declared and initialized as follows.

int[] nums = {3, 6, 1, 0, 1, 4, 2};



(A) 5

(B) 6

(C) 7

(D) 10

(E) 17 - (C) 7



Consider the following partial class declaration.

,AP Computer Science Practice Exam A 2024

public class SomeClass

{

private int myA;

private int myB;

private int myC;

// Constructor(s) not shown

public int getA

{ return myA; }

public void setB(int value)

{ myB = value; }

The following declaration appears in another class.

SomeClass obj = new SomeClass();

Which of the following code segments will compile without error?

(A) int x = obj.getA();

(B) int x;

obj.getA(x);

(C) int x = obj.myA

(D) int x = SomeClass.getA();

, AP Computer Science Practice Exam A 2024
(E) int x = getA(obj); - (A) int x = obj.getA



Which of the following changes to SomeClass will allow other classes to access but
not modify the value of myC ?

(A) Make myC public.



(B) public int getC()

{ return myC; }



(C) private int getC()

{ return myC; }



(D) public void getC(int x)



(E) private void getC(int x)

{ x = myC; } - (B) public int getC()

{ return myC; }



Consider the following code segment.