AP Computer Science A

AP Computer Science A unit 1 covers primitive types, variables, data types, expressions, assignments and so much more to prepare you for your exam and make sure you understand everything in unit 1.

Unit 1 – Primitive Types

1.3 Expressions and Assignment Statements

1.4 Compound Assignment Operators

1.7 MC Answers and Review

Introduction to CSP and Unit 1 Overview

1.5 Casting and Ranges of Variables

1.1 Why Programming? Why Java?

1.2 Variables and Primitive Data Types

Introduction to AP CSA and Unit 1 Review

1.6 Multiple Choice Questions

Unit 1 Overview: Primitive Types

To help you understand unit 2 of AP Computer Science A take a look at all of our resources. We cover using objects, void methods, non-void methods, string objects, string methods, and so much more! With helpful examples and study guides you will understand unit 2 in no time!

Unit 2 – Using Objects

2.3 Calling a Void Method

2.4 Calling a Void Method With Parameters

2.6 String Objects: Concatenation, Literals, and More

2.5 Calling a Non-Void Method

2.2 Creating and Storing Objects (Instantiation)

2.9 Using the Math Class

2.8 Wrapper Classes: Integer and Double

2.11 MC Answers and Review

2.1 Objects: Instances of Classes

2.10 Multiple Choice Questions

2.7 String Methods

Unit 2 Overview: Using Objects

Using Objects Overview

Take a look at these resources on AP Computer Science A unit 3 to help you prepare. We cover boolean expressions with examples of compound, equivalent, and complex boolean expressions, along with if-statements, else-if statements and comparing objects. All of these resources will make sure you have a better understanding of unit 3.

Unit 3 – Boolean Expressions & if Statements

3.8 Multiple Choice Questions

3.2 If Statements and Control Flow

3.4 Else If Statements

3.5 Compound Boolean Expressions

3.6 Equivalent Boolean Expressions

3.9 MC Answers and Review

3.7 Comparing Objects

3.1 Boolean Expressions

3.3 If-Else Statements

Unit 3 Overview: Boolean Expressions and if Statements

Learn everything you need to know about AP Computer Science A unit 4 using these resources. We cover the role of iteration, along with nested iteration and code analysis. There are also resources explaining, with examples, while loops and for loops to ensure you know everything about unit 4!

Unit 4 – Iteration

4.5 Informal Code Analysis

4.2 For Loops

Overview of Unit 4: Iteration and 4.1 While Loops

4.5 Multiple Choice Questions

While Loops

4.4 Nested Iteration

Informal Code Analysis

Unit 4 Overview: Iteration

4.6 MC Answers and Review

4.3 Developing Algorithms Using Strings

These resources will make sure you understand AP Computer Science A unit 5. Study guides, explanations and examples are available for all the important topics including constructors, the mutator method, writing methods, accessor methods, along with so much more. 

Unit 5 – Writing Classes

5.2 Constructors

5.8 Scope and Access

5.9 This Keyword

5.4 Accessor Methods

5.10 Ethical and Social Implications of Computing Systems

5.11 Multiple Choice Questions

5.3 Documentation With Comments

5.12 MC Answers and Review

5.1 Anatomy of a Class

Unit 5 Overview: Writing Classes

5.5 Mutator Methods

5.6 Writing Methods

5.7 Static Variables and Methods

Resources to help you review and understand unit 6 of AP Computer Science A. We cover arrays, with an overview, how to create them, and more, as well as detailed descriptions and examples for traversing arrays, array loops, and algorithms for arrays. 

Unit 6 – Array

6.6 MC Answers and Review

6.5 Multiple Choice Questions

6.3 Enhanced For Loop For Arrays

6.4 Developing Algorithms Using Arrays

6.2 Traversing Arrays

Unit 6 Overview: Array

Array Creation and Access

Unit 6 Arrays Overview

Take a look at all of these resources for unit 7 of Computer Science A. They cover an introduction into an arraylist, along with helpful examples and explanations for methods, traversing arraylists, sorting arraylists, and the ethical dilemmas of data collection, along with so much more. These resources will make sure you understand unit 7!

Unit 7 – ArrayList

7.2 ArrayList Methods

7.4 Developing Algorithms Using ArrayLists

7.6 Sorting

7.3 Traversing ArrayLists

7.8 Multiple Choice Questions

7.1 Introduction to ArrayList

7.9 MC Answers and Review

Introduction to ArrayList

7.5 Searching

Unit 7 Overview: ArrayList

7.7 Ethical Issues Around Data Collection

Make sure to check ou these resources for AP Computer Science A unit 8. We provide helpful resources and examples so you can gain a better understanding of 2D arrays and traversing 2D arrays, along with other important topics. These resources will make sure you fully understanding unit 8 of AP Computer Science A!

Unit 8 – 2D Array 

Unit 8 Overview

8.3 Multiple Choice Questions

8.2 Traversing 2D Arrays

2D Arrays

8.4 MC Answers and Review

Unit 8 Overview: 2D Array

A complete overview of the important topics for unit 9 of AP Computer Science A. We cover inheritance, constructors with subclasses, super keyword, polymorphism, and object superclasses to help you study and prepare. 

Unit 9 – Inheritance

9.7 Object Superclass

9.4 Super Keyword

9.8 Multiple Choice Questions

9.3 Overriding Methods

9.5 Creating References Using Inheritance Hierarchies

9.9 MC Answers and Review

Overview of Unit 9: Inheritance

Unit 9 Overview: Inheritance

9.6 Polymorphism

Creating Superclasses and Subclasses

9.2 Writing Constructors for Subclasses

Learn everything you need to know about unit 10 of AP Computer Science A. We cover recursion and how to use recursion with sorting and searching, including linear and sequential searches, binary searches, insertion sorts, selection sorts and merge sorts. These examples and explanations will make sure you understand this final unit!

Unit 10 – Recursion

Unit 10 Overview

10.2 Recursive Searching and Sorting

10.4 MC Answers and Review

Unit 10 Overview: Recursion

Recursion

10.3 Multiple Choice Questions

Frequently Asked Questions

Interfaces

Should I Use "int" or "double"?

Private Variables

How to Write Method Headers

What Are the 5 Best Resources for AP Computer Science Principles?

AP Computer Science Myths 

How Can I Get a 5 in AP Computer Science A?

What is Short-Circuiting?

String Methods

When is the value of a variable changed and when is it not?

What Is an Abstract Class?

Exam Reviews

AP CSA: Unit 2 and 3 Review

AP Computer Science A Exam Guide

Check out these resources that will cover all the important topics of AP Computer Science A so you can prepare for your exam. With study guides, review sheets and review videos with sample problems and helpful tips, these resources will make sure you are ready for your exam!

Big Reviews: Finals & Exam Prep

2022 AP Computer Science A Exam Guide 

AP Cram Sessions 2021

🌶️ AP Comp Sci A Cram Review: Unit 8: 2D Array

AP Computer Science A Cram Unit 8: 2D Array

🌶️ AP Comp Sci A Cram Review: Unit 4: Iteration

AP Computer Science A Cram Unit 4: Iteration

🌶️ AP Comp Sci A Cram Review: Unit 1: Primitive Types

AP Computer Science A Cram Unit 1: Primitive Types

🌶️ AP Computer Science A Finale Watch Party Admin 3

AP Computer Science A Finale 

🌶️ AP Comp Sci A Cram Review: Unit 5: Writing Classes

AP Computer Science A Cram Unit 5: Writing Classes

🌶️ AP Comp Sci A Cram Review Unit 10 Recursion

AP Computer Science A Cram Unit 10: Recursion

🌶️ AP Comp Sci A Cram Review: Unit 9: Inheritance

AP Computer Science A Cram Unit 9: Inheritance

🌶️ AP Comp Sci A Cram Review: Unit 2: Using Objects

🌶️ AP Comp Sci A Cram Review Free Response Tips and Tricks

🌶️ AP Comp Sci A Cram Review: Unit 3: Boolean Expressions and if Statements

💻AP Computer Science A - Unit 6 – Array

Study Guides