Java Programming for Beginners 2026

Start learning Java programming by writing your first line of code and printing to the console, and explore Java's versatility for Android apps and server side work.

Identify the main method as the program's starting point and translate the sequence of real-world decisions, like traffic light colors, into algorithmic steps in Java.

The computer reads Java code from top to bottom and left to right, executing each instruction in order, while you arrange the main method for readability and static structure.

Write code the computer can interpret, following the syntax of the programming language. Document your applications with helpful text that describes their functionality.

Learn to add comments that describe the code you write, helping you understand and maintain growing applications over time. Discover how software developers create, maintain, and work with information.

Practice console output by creating a Java project in IntelliJ, defining class with a main method, and printing lines and numbers with System.out.print and System.out.println, including comments and long numbers.

Learn to declare and initialize variables of common data types in Java, name them in camel case, print their values, and understand that variables can change content.

Explore how computers process information, converting text and numbers into data types like int, double, characters, and booleans, and learn how variables store this information and how conditional decisions work.

Practice introduces declaring and initializing char, double (or float), and boolean variables, printing them on one or multiple lines, and performing basic int arithmetic including addition, subtraction, division, and multiplication.

Explore how variables store information and guide decisions in Java, debunking the math myth and highlighting logic through theory and practical exercises.

Master Java operators using int variables to compute sum, difference, multiply, division, and modulo, printing results with System.out and printf, while learning comments and newline formatting.

Learn to read console input in Java using the Scanner class from java.util to capture text, numbers, booleans, and chars with next methods, while avoiding input glitches with multiple scanners.

Explore how a program uses basic operations—addition, subtraction, multiplication, and division—to compute results from information and drive decisions through comparisons.

Learn how to implement an algorithm using boolean logic to compare information and decide actions, such as crossing the street based on traffic light signals.

Explore decision making with if statements in Java, using age and traffic light examples, and learn about equals for strings, equals ignore case, and else and else-if branches.

Write your first algorithm using a simple if statement to check if a number is positive and print a message, then explore what happens when the condition is false.