If you’re looking for a clear Java tutorial for beginners, you’ve come to the right place — this guide walks you through writing, compiling, and running your very first Java program: the classic “Hello, World!” example. Java remains one of the most powerful, widely-used, and beginner-friendly languages in 2025–2026 — it powers Android apps, enterprise backends, big data tools (Hadoop, Spark), web servers (Spring Boot), desktop applications, games, and much more. Java’s biggest strengths for beginners are its strong typing, clear syntax, excellent error messages, massive community, and cross-platform nature: write once, run anywhere.

In this Java tutorial for beginners, you’ll:

  • Set up a simple project folder
  • Write your first Java class and main method
  • Understand every line of code
  • Compile with javac
  • Run with java
  • Troubleshoot common beginner mistakes

By the end, you’ll have confidence to start real Java projects.

Prerequisites

  • Java 11, 17, 21 or 23 installed (LTS versions recommended)
    • Ubuntu/Debian: sudo apt install openjdk-21-jdk
    • Windows/macOS: Download from https://adoptium.net/ or Oracle
  • A terminal (Command Prompt, PowerShell, Terminal, Bash)
  • A text editor: VS Code (recommended), Notepad++, Sublime, or nano/vim
  • Optional: IntelliJ IDEA Community (free) — great for beginners later

Step 1 – Create Your Project Folder

Open your terminal and create a dedicated folder:

				
					mkdir hello-java
cd hello-java

This keeps your first Java tutorial for beginners project organised.

Step 2 – Write Your First Java Program

Create a file called Hello.java (file name must match the class name):

				
					nano Hello.java    # or use VS Code: code Hello.java

Paste this code:

				
					public class Hello {
    public static void main(String[] args) {
        System.out.println("Hello, World! Welcome to Java!");
    }
}

Save and exit (nano: Ctrl+O → Enter → Ctrl+X).

Line-by-line explanation (key for Java tutorial for beginners):

  • public class Hello → Defines a public class named Hello (must match filename)
  • { and } → Curly braces contain the class body
  • public static void main(String[] args) → Special method — Java’s entry point
    • public: accessible from anywhere
    • static: can run without creating an object
    • void: returns nothing
    • main: exact name Java looks for
    • String[] args: array for command-line arguments
  • System.out.println(…) → Prints text to console + newline
  • ; → Every Java statement ends with semicolon

Step 3 – Compile Your Java Program

Compile the source code into bytecode:

				
					javac Hello.java

No errors? You now have Hello.class (bytecode file) in the folder.

If you see errors:

  • Check filename matches class name exactly (Hello.java)
  • Check for missing ; or wrong braces
  • Run javac –version to confirm Java is installed

Step 4 – Run Your Java Program

Execute the compiled bytecode:

				
					java Hello

Output:

				
					Hello, World! Welcome to Java!

Success! You’ve written, compiled, and run your first Java program in this Java tutorial for beginners.

Step 5 – Experiment & Learn More

Try these changes in Hello.java (recompile with javac Hello.java each time):

				
					// Change message
System.out.println("Hi Zain! I'm learning Java in 2026!");

// Multiple lines
System.out.println("Line 1");
System.out.println("Line 2");

// Variables
String name = "Zain";
int age = 25;
System.out.println("My name is " + name + " and I am " + age + " years old.");

Re-run: java Hello

Step 6 – Common Beginner Mistakes & Fixes

  • Error: class Hello is public, should be declared in a file named Hello.java → Filename must match public class name exactly (case-sensitive)
  • Error: cannot find symbol → Missing ; or typo in code
  • Error: main method not found → Check method signature is exactly public static void main(String[] args)
  • No output after java Hello → Make sure you compiled first (javac Hello.java)

Next Steps After This Java Tutorial for Beginners

  • Learn variables, data types, operators
  • Work with conditionals (if, else) and loops (for, while)
  • Understand methods and parameters
  • Explore arrays and ArrayList
  • Start using classes & objects (OOP basics)
  • Try IntelliJ IDEA Community — free, beginner-friendly IDE
  • Build small projects: calculator, to-do list, number guessing game

Summary

You now know exactly how to write, compile, and run your first Java program — the foundation of every Java tutorial for beginners.

You’ve mastered:

  • Creating a Java class
  • Writing the main method
  • Printing to console
  • Compiling with javac
  • Running with java

You’re officially coding in Java!

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