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AP®︎ Computer Science A Study Guides

Prepare for your quiz, test, or the AP exam with comprehensive study guides that cover everything you need to know. Select a unit or topic to begin.

Unit 1: Using Objects and Methods

All Topics
Complete Unit Review

Topic 1.1
Introduction to Algorithms, Programming, and Compilers

Topic 1.2
Variables and Data Types

Topic 1.3
Expressions and Output

Topic 1.4
Assignment Statements and Input

Topic 1.5
Casting and Range of Variables

Topic 1.6
Compound Assignment Operators

Topic 1.7
Application Program Interface (API) and Libraries

Topic 1.8
Documentation with Comments

Topic 1.9
Method Signatures

Topic 1.10
Calling Class Methods

Topic 1.11
Math Class

Topic 1.12
Objects: Instances of Classes

Topic 1.13
Object Creation and Storage (Instantiation)

Topic 1.14
Calling Instance Methods

Topic 1.15
String Manipulation

Unit 2: Selection and Iteration

All Topics
Complete Unit Review

Topic 2.1
Algorithms with Selection and Repetition

Topic 2.2
Boolean Expressions

Topic 2.3
if Statements

Topic 2.4
Nested if Statements

Topic 2.5
Compound Boolean Expressions

Topic 2.6
Comparing Boolean Expressions

Topic 2.7
while Loops

Topic 2.8
For Loops

Topic 2.9
Implementing Selection and Iteration Algorithms

Topic 2.10
Implementing String Algorithms

Topic 2.11
Nested Iteration

Topic 2.12
Informal Run-Time Analysis

Unit 3: Class Creation

All Topics
Complete Unit Review

Topic 3.1
Abstraction and Program Design

Topic 3.2
Impact of Program Design

Topic 3.3
Anatomy of a Class

Topic 3.4
Constructors

Topic 3.5
Methods: How to Write Them

Topic 3.6
Methods: Passing and Returning References of an Object

Topic 3.7
Class Variables and Methods

Topic 3.8
Scope and Access

Topic 3.9
this Keyword

Unit 4: Data Collections

All Topics
Complete Unit Review

Topic 4.1
Ethical and Social Issues Around Data Collection

Topic 4.2
Introduction to Using Data Sets

Topic 4.3
Array Creation and Access

Topic 4.4
Array Traversals

Topic 4.5
Implementing Array Algorithms

Topic 4.6
Using Text Files

Topic 4.7
Wrapper Classes

Topic 4.8
ArrayList Methods

Topic 4.9
ArrayList Traversals

Topic 4.10
Implementing ArrayList Algorithms

Topic 4.11
2D Array Creation and Access

Topic 4.12
2D Array Traversals

Topic 4.13
Implementing 2D Array Algorithms

Topic 4.14
Searching Algorithms

Topic 4.15
Sorting Algorithms

Topic 4.16
Recursion

Topic 4.17
Recursive Searching and Sorting

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