Welcome to my APCSA guide. I made everything free for you to get that 5. First off, I want to say that there are tons of great materials in youtube&sometimes reddit to self study this AP.( Unfortunately my school doesn’t offer the course).

I will leave table of contents below so you can skip so that you can either cram or preview what’s coming.

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Please research what Java is and your setup before starting this tutorial. I really wanted to explain this, but due to how long it will be and there are already millions of guides, so I decided not to. So please just do the env setup by yourself.

For more help look here:

2.1. What is Java? — AP CSA Java Review - Obsolete

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Primitive Data

So first off let’s understand what variable is:

Variable is a box that can store anything- from numbers, conditions, floating points, to strawberries.

Basically, programmers use variables to store some kind of value(s). This is especially useful when you want your program to do something more than basic, like let’s say remembering your name and how to spell it.

Variable has lots of data *types(*fancy vocab here🤓) but here are all the ones you have to memorize/learn if you are taking this course/ or just want to get good at coding in general.

These four in the image are called primitive data types. These are the core components of Java. Like it is a lifeline if you want to master coding. (yes, these exists in other languages).