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Beginner · Java

Java for Beginners

A friendly, no-experience-needed introduction to Java. Learn what it is and where it's used, then write your first program and build up to variables, strings, math, loops, methods, arrays, and classes.

Java for Beginners is a gentle, step-by-step introduction to one of the world's most widely used programming languages. You will learn what Java is and where it shows up, from Android apps to the servers behind huge websites, before writing your first program. From there you will build up your skills one small idea at a time: variables, strings, numbers, decisions, loops, methods, arrays, and a first friendly look at classes and objects. No prior coding experience is needed, just curiosity.

Beginner 12 lessons ~83 min Java
Start the course
01

Meet Java

Discover what Java is, where it's used, and write your very first program.

3 lessons
  1. 1 What Is Java, Anyway? Where this language shows up in the real world 5 min
  2. 2 Your First Java Program Meet the main method that starts everything 6 min
  3. 3 Printing Text with System.out.println Getting Java to talk back to you 6 min
02

Storing Information

Learn to store information in variables, work with text, and do math in Java.

3 lessons
  1. 4 Variables and Types Giving your data a name and a shape 7 min
  2. 5 Working with Strings Java's way of handling text 7 min
  3. 6 Numbers and Math Doing arithmetic in your code 7 min
03

Decisions and Loops

Teach your programs to make decisions, repeat tasks, and organize code into methods.

3 lessons
  1. 7 Making Choices with if and else Teaching your program to decide 7 min
  2. 8 Repeating Yourself with Loops Let Java do the boring repeating for you 7 min
  3. 9 Organizing Code with Methods Giving a block of code its own name 8 min
04

Bigger Building Blocks

Store lists of data, meet classes and objects, and see how Java powers big websites.

3 lessons
  1. 10 Storing Lists of Data with Arrays Keeping many values in one place 7 min
  2. 11 A First Look at Classes and Objects Java's way of modeling real things 8 min
  3. 12 How Java Powers Big Websites From your first program to real-world servers 8 min