Learn AP CSA in 30 Weeks!

Want to learn AP Computer Science A and prepare for the AP CSA exam? Join us for a free 30-week AP CSA lecture series designed to guide you through the course content step-by-step while giving you plenty of opportunities to practice what you learn!

Starting Monday, September 21, a new lecture will be posted every Monday. Each week will focus on important AP CSA concepts and Java programming skills, building throughout the series as you work toward being prepared for the AP exam.

Video Lecture Series Learning Content

The Destination for Beginners, Students, and Teachers of Java

Why Java?

Learner's Corner

Teacher's Corner

Try out Modern Java Now

The Java Playground allows you to run snippets of program code to see the results. The way the Java Playground works, no class or main method is required. Just hit run below!

Learning Java Has Never Been Easier

Videos to get you started

Java Primitive Data Types Explained (int, double, boolean, and char)

This video introduces primitive data types—the built-in types used to store simple values like numbers, characters, and true/false.

Intro to Reference Data Types: The Next Big Step

Take the next step beyond primitives by learning about reference data in Java.

Java Variable Names: Rules, Conventions, and Best Practices

This video covers the official rules Java enforces (what characters you can use, where names can start, and which words are reserved) plus common naming conventions like camelCase.

Java Arithmetic Operators: +, -, *, /, and % Explained

Discover how to use operators such as addition (+), subtraction (-), multiplication (*), division (/), and remainder(%) to work with numeric values.