Hello World in Java

From the Java cheat sheet · Getting Started · verified Jul 2026

The classic entry point, plus the simplified launch form finalized in Java 25.

java

// Quick Reference
public class Main {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}

💡 Class name must match the file name for a public class (Main -> Main.java).

⚡ System.out.println() prints with a trailing newline; use print() without.

📌 Java 25 compact source files let beginners skip the class/static/args boilerplate.

🟢 %n is the platform-independent newline in printf, preferred over \n.

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