Please enable JavaScript to use CodeHS

AP Computer Science A (Mocha)

Learn the basics of object-oriented programming with a focus on problem solving and algorithm development. Take this course and prepare to ace the AP® Computer Science A test.

Introduction to Programming in Java with Karel the Dog


Intro to Java with Karel the Dog. Learn the basics of java commands, control structures, and problem solving by solving puzzles with Karel.
Browse

Basic Java


Learn the basics of the Java programming language. This unit covers printing, variables, types, as well as how to use the basic control structures in the Java language.
Browse

Methods


Methods are bits of code that perform a specific task. This module teaches you how to define methods in your programs and uses the autograder to test if your methods are working correctly.
Browse

Classes and Object-Oriented Programming


This unit teaches students the basics of Object Oriented Programming in Java, which is a powerful programming paradigm. Students will learn how objects store data and interact with each other in Java programs. Students will design and implement classes and extend classes using inheritance
Browse

Data Structures


This method will introduce basic data structures in Java including arrays, ArrayLists, 2 dimensional arrays and HashMaps. Data structures will be used to design larger applications.
Browse

Blackjack


In this project, you will develop a BlackJack game!
Browse

Battleship


In Battleship, you will use Object Oriented design to implement the board game Battleship.
Browse

Algorithms and Recursion


In this module students will be introduced to fundamental searching and sorting algorithms including sequential search, binary search, insertion sort, selection sort, and mergesort. Recursion is also introduced.
Browse

AP Test Practice


In this module students will get a practice exam in the same format as the AP Computer Science in Java test.
Browse

Final Project


This is your chance to build your own application using the new skills you've learned!
Browse

Try it!

Check out the programs you'll be able to make
view demos

Learning on CodeHS