Guide to AP® Computer Science A

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Object-Oriented Program Design

Object-oriented design is a process used to develop programs in a modular fashion in order to solve specific problems. In this first theme of the AP® Computer Science A course, you will learn about data definition, algorithm development, class design, data relationships, and objects.

CompletionAccuracy

Accuracy is based on your most recent attempt.

Status

Your status is based on your weighted accuracy which accounts for the difficulty of the questions.

Your weighted accuracy is based on your most recent attempts compared to everyone else’s first attempts.

Re-answering questions correctly will improve your weighted average status.

Program and Class Design

Analyze problems, define class specifications, and design programs that can complete required tasks and adapt to future use cases and needs.
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Problem analysisFree

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Data abstractionFree

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Class specificationsFree

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Code reuse

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Data representation

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Functional decomposition

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Extra Practice

Review important definitions and foundational concepts, such as program design principles and encapsulation.
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Program Implementation

Program Implementation describes the different approaches used to solve a problem. In this theme, you will learn about program development strategies, data declaration, and implementation techniques. In addition, you will use conditional logic, looping, and recursion.

CompletionAccuracy

Accuracy is based on your most recent attempt.

Status

Your status is based on your weighted accuracy which accounts for the difficulty of the questions.

Your weighted accuracy is based on your most recent attempts compared to everyone else’s first attempts.

Re-answering questions correctly will improve your weighted average status.

Implementation Techniques

Review approaches, including "top-down" and "encapsulation" for managing the flow of program development.
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Programming Constructions

Evaluate expressions as you apply your knowledge of the building blocks of programming, including constants, variables, classes, and methods.
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Declaration

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Text output

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Control

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Expression Evaluation

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Java Library Classes and Interfaces for AP®

Ensure you are familiar with and can use Java classes and interfaces included in the AP® subset.
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Extra Practice

Review basic concepts and definitions, including the definition of recursion and boolean assignment and expressions.
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Program Analysis

Program analysis is the process of debugging programs to find errors, testing classes and methods to determine if they are functioning properly, and analyzing the efficiency of programs. Learn about error classification, analyzing algorithms, and the representation and conversion of numbers with different bases.

CompletionAccuracy

Accuracy is based on your most recent attempt.

Status

Your status is based on your weighted accuracy which accounts for the difficulty of the questions.

Your weighted accuracy is based on your most recent attempts compared to everyone else’s first attempts.

Re-answering questions correctly will improve your weighted average status.

Testing Programs

Designing effective tests is an essential, ongoing part of program development.
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Debugging Programs

Review error types and classifications as well as systems for detecting and making sense of code errors.
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Runtime Exceptions

Examine and categorize the different exceptions that can disrupt the handling of program events.
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Program Correctness

Check whether or not a programs complete the tasks you designed them to perform.
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Algorithm Analysis

Optimize and find the fastest, most efficient ways to execute programs.
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Numerical Representations of Integers

Learn to store values as "bits" and convert between different representations.
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Extra Practice

Practice converting between numerical representations and examine different testing methods and scenarios.
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Standard Data Structures

In programming, it is necessary to determine the correct type of data to represent the information you are using to solve a problem. Learn about the specific data types used to represent numbers, true/false information, alphabetic data, and groups/lists of related information, all of which are foundational concepts in AP® Computer Science A.

CompletionAccuracy

Accuracy is based on your most recent attempt.

Status

Your status is based on your weighted accuracy which accounts for the difficulty of the questions.

Your weighted accuracy is based on your most recent attempts compared to everyone else’s first attempts.

Re-answering questions correctly will improve your weighted average status.

Primitive Data Types

Review and perform operations on primitive data types including Integer, character, and boolean types.
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Strings

Master applications involving the string class, including using the substring method, deleting characters in strings, and sorting/counting in strings.
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Classes

Learn how classes are used as "blue prints" to create specific objects and how to use modifiers.
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Lists

Examine and analyze uses of the ArrayList class, such as printing lists to console and conducting operations on list elements.
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Arrays

Initialize, sort, debug print, and both update and manipulate arrays in this topic.
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Extra Practice

Get more practice mastering basic concepts, including identifying primitive data types and the substring method.
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Standard Operations and Algorithms

As you progress in you AP® Computer Science A course, explore algorithms are sets of rules or processes used to help solve problems in programming. Practice using algorithms on data structures and perform operations on arrays, such as insert and deleting elements with an array.

CompletionAccuracy

Accuracy is based on your most recent attempt.

Status

Your status is based on your weighted accuracy which accounts for the difficulty of the questions.

Your weighted accuracy is based on your most recent attempts compared to everyone else’s first attempts.

Re-answering questions correctly will improve your weighted average status.

Operations on Data Structures

Review a variety of operations that can be performed on data structures such as adding , deleting, and testing equality of arrays.
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Searching

Perform binary searches as well as by using "while" loops; learn to find "highest" and "lowest" characters in strings and more.
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Sorting

From insertion to selection sort, assess your ability to use powerful sorting types.
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Extra Practice

Review different sorting algorithms and their characteristics.
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