Beginner module
Module 1: Start Coding in Java
Run Java code first, understand what the language is for, then install JDK 25 and run programs locally without getting buried in JVM internals.
Module lessons
Module 1: Start Coding in Java
What Java Is and What You Will Build
Start with the big picture: what Java is good at, how this course is structured, and the kinds of beginner projects you will build.
Run Your First Java Code in the Browser Compiler
Use the built-in compiler to run Java without touching local setup yet, so you can focus on reading and editing code.
Hello World Explained Line by Line
Read the classic Java starter program carefully so every piece of the class and `main` method makes sense.
Install JDK 25 and Verify `java` and `javac`
Install a current Java 25 JDK, verify the runtime and compiler from the terminal, and avoid outdated JRE-only advice.
Run a Java File from Terminal and from an IDE
Compile and run a simple Java file locally, then see how an IDE does the same job with less manual typing.
Common Setup Mistakes and Quick Fixes
Recognize the first errors beginners hit most often and fix them without panic.
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