The Free Response Questions (FRQs) section is the most important part of the AP Computer Science A (AP CSA) exam. It tests a student’s ability to think logically, write clean Java code, and apply programming concepts to real problems.
This page is a complete, topic-wise collection of original, exam-style FRQ practice problems designed to help students score higher on the FRQ section.
Why Practice FRQs?
The FRQ section checks whether a student can:
- Understand a problem
- Break it into steps
- Apply arrays, lists, loops, and objects
- Write correct Java methods
- Handle logic, edge cases & algorithms
Practicing topic-wise FRQs builds confidence and helps students quickly improve their score.
FRQ Topics Covered
The following categories will be available on this website.
1. Arrays – FRQ Practice
Master traversal, indexing, filtering, searching, and transformations.
2. ArrayList – FRQ Practice
Add, remove, filter, and work with lists of objects.
3. Strings – FRQ Practice
Substring operations, character checks, pattern validation, and text handling.
4. Classes & Objects – FRQ Practice
Constructors, accessor/mutator methods, object behavior, and state changes.
5. Inheritance & Polymorphism – FRQ Practice
Overriding, subclass behavior, polymorphic calls, and dynamic method dispatch.
6. 2D Arrays – FRQ Practice
Grid traversal, row/column processing, neighbor checks, and simulations.
7. Mixed Topic FRQs
Exam-level problems combining multiple topics (Arrays + ArrayList + Objects).
How to Use This FRQ Section
- Start with Arrays and ArrayList (core topics)
- Move to Strings and Classes once confident
- Practice 2D Arrays and Inheritance
- Attempt Mixed FRQs for true exam difficulty
- Solve full mock sets for AP-level timing practice
- Compare your code with the detailed solutions
- Learn common mistakes and scoring guidelines
Practicing in this order ensures maximum improvement.
Who This FRQ Section Is For
This FRQ practice library is perfect for:
- Students preparing for AP CSA
- Students taking Java in school
- Beginners wanting practical Java practice
- Students aiming for score 4 or 5
- Parents looking for structured topic-wise study material
- Teachers using additional practice for their students
What Makes These FRQs Special
- Topic-wise difficulty progression
- Includes step-by-step explanations
- Includes common mistakes to avoid
- Includes Java code solutions
- Designed by an experienced Java tutor
- Covers the style, format, and skills needed for the AP exam
Tip for Students
Always try to solve the question first without looking at the solution.
After solving, compare step-by-step with the provided solution.
This improves logic, not just memorization.
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Related Pages
- AP CSA Overview
- AP CSA Syllabus
- Arrays FRQ Practice
- ArrayList FRQ Practice
- Strings FRQ Practice
- Classes & Objects FRQ Practice
- Inheritance FRQ Practice
- 2D Arrays FRQ Practice
- Mixed FRQs
- Mock FRQ Sets