💻 AP Computer Science A

1.1

Why Programming? Why Java?

1.2

Variables and Primitive Data Types

1.3

Expressions and Assignment Statements

1.4

Compound Assignment Operators

1.5

Casting and Ranges of Variables

Unit 2 – Using Objects in AP Computer Science A

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2.0

Unit 2 Overview: Using Objects

2.1

Objects: Instances of Classes

2.2

Creating and Storing Objects (Instantiation)

2.3

Calling a Void Method

2.4

Calling a Void Method With Parameters

2.5

Calling a Non-Void Method

2.6

String Objects: Concatenation, Literals, and More

2.7

String Methods

2.8

Wrapper Classes: Integer and Double

2.9

Using the Math Class

Unit 3 – Boolean Logic & Conditional Statements

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3.0

Unit 3 Overview: Boolean Expressions and if Statements

3.1

Boolean Expressions

3.2

If Statements and Control Flow

3.3

If-Else Statements

3.4

Else If Statements

3.5

Compound Boolean Expressions

3.6

Equivalent Boolean Expressions

3.7

Comparing Objects

Unit 4 – Iteration in Programming

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4.0

Unit 4 Overview: Iteration

4.1

While Loops

4.2

For Loops

4.3

Developing Algorithms Using Strings

4.4

Nested Iteration

4.5

Informal Code Analysis

6 min read

Unit 5 – Writing Classes in AP Computer Science A

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5.0

Unit 5 Overview: Writing Classes

10 min read

5.1

Anatomy of a Class

5.2

Constructors

5.3

Documentation With Comments

5.4

Accessor Methods

5.5

Mutator Methods

5.6

Writing Methods

5.7

Static Variables and Methods

5.8

Scope and Access

5.9

This Keyword

5.10

Ethical and Social Implications of Computing Systems

Unit 6 – Array Basics in AP Computer Science A

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6.0

Unit 6 Overview: Array

6.0

Unit 6 Overview: Array

6.1

Array Creation and Access

6.2

Traversing Arrays

6.3

Enhanced For Loop For Arrays

6.4

Developing Algorithms Using Arrays

Unit 7 – ArrayList in AP Computer Science A

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7.0

Unit 7 Overview: ArrayList

7.1

Introduction to ArrayList

7.2

ArrayList Methods

7.3

Traversing ArrayLists

7.4

Developing Algorithms Using ArrayLists

7.5

Searching

7.6

Sorting

7.7

Ethical Issues Around Data Collection

Unit 8 – 2D Arrays in AP Computer Science A

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8.0

Unit 8 Overview: 2D Array

8.0

Unit 8 Overview: 2D Array

6 min read

8.1

2D Arrays

8.2

Traversing 2D Arrays

10 min read

Unit 9 – Inheritance in Object-Oriented Programming

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9.0

Overview of Unit 9: Inheritance

9.0

Unit 9 Overview: Inheritance

9.1

Creating Superclasses and Subclasses

9.2

Writing Constructors for Subclasses

9.3

Overriding Methods

9.4

Super Keyword

9.5

Creating References Using Inheritance Hierarchies

9.6

Polymorphism

9.7

Object Superclass

Unit 10 – Recursion

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10.0

Unit 10 Overview

10.0

Unit 10 Overview: Recursion

10.1

Recursion

10.2

Recursive Searching and Sorting

Study Tools

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2024 AP Computer Science A Exam Guide

6 min read

Exam Skills

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Score Higher on AP Comp Sci A 2024: MCQ Tips from Students

Score Higher on AP Comp Sci A 2024: FRQ Tips from Students

10 min read

Frequently Asked Questions

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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?

AP Cram Sessions 2021

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AP Computer Science A PDF Cheat Sheet & Review Chart