Java / Live sample
public class HelloRoom {
    public static void main(String[] args) {
        String course = "AP Java";
        System.out.println("Welcome to " + course);
    }
}
Room310 / Study / AP Java

Learn Java,
build with structure.

A separate seven-chapter AP Java course—every lesson, explanation, example, assignment, sample run, image, and project.

AP Java

Seven chapters

Program structure, variables, input, methods, conditionals, loops, and arrays.

J01

Your First Java Program

Java program structure, printing, comments, headings, escape characters, and first assignments.

Open chapter → J02

Variables

Math, primitive data types, Strings, booleans, variables, concatenation, tracing, and assignments.

Open chapter → J03

User Input

Using Scanner, collecting user values, processing input, and five complete assignments.

Open chapter → J04

Methods

Defining, calling, parameterizing, returning from, and combining Java methods.

Open chapter → J05

Conditionals

Operators, if/else branches, compound logic, nesting, illustrations, and assignments.

Open chapter → J06

Loops

while, for, nested loops, break and continue, random numbers, assignments, and projects.

Open chapter → J07

Arrays

Declaring arrays, passing arrays to methods, two-dimensional arrays, and applied assignments.

Open chapter →