Vala is a new programming language that aims to bring modern programming language features to GNOME developers without imposing any additional runtime requirements and without using a different ABI compared to applications and libraries written in C.
The classic "Hello, world" example in Vala:
using GLib;
public class Sample : Object {
	public Sample () {
	}
	public void run () {
		stdout.printf ("Hello, world!\n");
	}
	static int main (string[] args) {
		var sample = new Sample ();
		sample.run ();
		return 0;
	}
}
    Store the code in a file whose name ends in ".vala", such as hello.vala, and compile it with the command:
valac -o hello hello.vala
This will produce an executable file called hello.