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AP Computer Science A practice test

StudySim's free AP Computer Science A practice test has 24 sample questions with answer explanations. Trace Java code, reason about objects, and practice loops, arrays, and data collections. Use the answer explanations to understand the reasoning, then revisit the topics that need more work.

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Sample AP Computer Science A questions

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AP Computer Science A Sample Questions

Practice quiz

1. In Java, what value is stored after int n = 17 / 5; ?

2. A developer is asked to use real students’ private records to test a classroom app. Which approach best protects privacy while still testing the code?

3. What value does double d = (double) 7 / 2; store in Java?

4. For String s = "planet";, what does s.substring(1, 4) return in Java?

5. Which Java condition tests whether two non-null String objects a and b contain the same characters?

6. Assume int x = 0;. What happens when Java evaluates x != 0 && 12 / x > 2 ?

7. What is printed by: int x = 8; if (x > 5) x -= 2; if (x > 5) x += 3; System.out.print(x); ?

8. How many times does this Java loop execute its body? for (int i = 2; i < 11; i += 3) { /* body */ }

9. What is the final value of sum? int sum = 0; for (int i = 1; i <= 4; i++) sum += i * i;

10. What is printed? int n = 13; int count = 0; while (n > 0) { n /= 2; count++; } System.out.print(count);

11. How many stars are printed? for (int r = 1; r <= 3; r++) { for (int c = 0; c < r; c++) System.out.print("*"); }

12. Which expression is equivalent to !(a && b) for boolean variables a and b?

13. A class has a private int field score. Which constructor correctly sets it from a parameter with the same name?

14. Why are instance fields commonly declared private and accessed through appropriate public methods?

15. A method receives an int parameter x, assigns x = 99, and returns without using shared state. What happens to the caller’s original int variable?

16. Two reference variables p and q refer to the same mutable Counter object. The call p.increment() changes the object’s count from 4 to 5. What does q.getCount() return?

17. For int[] a = {4, 8, 12, 16};, what does a[a.length - 1] evaluate to?

18. What is the final array after int[] a = {2, 4, 6}; for (int i = 0; i < a.length; i++) a[i] += i; ?

19. What is the final array after int[] a = {2, 4, 6}; for (int value : a) value++; ?

20. For a nonempty int array a, which initialization correctly supports finding its maximum even if every value is negative?

21. A Java ArrayList<String> list starts as ["A", "B", "B", "C"]. The code for (int i = 0; i < list.size(); i++) { if (list.get(i).equals("B")) list.remove(i); } is executed. What is the final list?

22. What does this Java code compute for an int[][] grid? int total = 0; for (int[] row : grid) for (int v : row) total += v;

23. A sorted array contains 1,024 distinct integers. Which search strategy can repeatedly discard about half the remaining candidates?

24. A student wants to test a method that counts values greater than 10. Which test array best exposes the difference between > 10 and >= 10?

0 of 24 answered

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Exam at a glance

AP Computer Science A preparation includes Using objects and methods, Selection and iteration, Class creation, Data collections. This StudySim bank provides original multiple-choice skill practice. Consult the official framework for the complete exam format, required tasks, and current policies.

Detail	Information
Content framework	College Board: AP Computer Science A course framework

Source: College Board: AP Computer Science A course framework · Last reviewed Oct 27, 2026

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AP Computer Science A content areas

Using objects and methods

Practice using objects and methods with original questions and explanations. Topic labels describe this bank, rather than official section weights.

Selection and iteration

Practice selection and iteration with original questions and explanations. Topic labels describe this bank, rather than official section weights.

Class creation

Practice class creation with original questions and explanations. Topic labels describe this bank, rather than official section weights.

Data collections

Practice data collections with original questions and explanations. Topic labels describe this bank, rather than official section weights.

Study tips for AP Computer Science A

Explain your answer

Before opening the explanation, identify the evidence, calculation, or rule that supports your choice. Explain why the other choices do not fit.

Practice a weak topic

Use the topic and difficulty filters in exam prep, then review your missed questions. These difficulty labels are editorial estimates, not calibrated exam statistics.

Use official exam materials too

Pair these skill checks with official practice materials for pacing, extended responses, and any tasks not represented by multiple-choice practice.

A few useful details

AP Computer Science A FAQ

Is this an official AP Computer Science A exam?

No. StudySim writes original practice questions independently. This is not a full-length exam, an official past paper, or a predictor of an official exam score.

Can I practice without signing up?

Yes. These prepared practice questions and their explanations are free to use without an account. They do not require an AI generation request.

How should I use the practice results?

Use the raw number correct and topic breakdown to decide what to review. Difficulty labels are editorial estimates. Results are not converted into an official scaled score.

Does this include every exam task?

No. This bank focuses on multiple-choice skills. Official exams may also require essays, free responses, performances, audio, projects, or other task formats; use official resources for those components.

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