'Hello, World!' program in 7 different languages

Generally 'Hello World!' program is the first ever program that you'd do in any language. It is a rite of passage into more complex programs in any language. So here's a quick look at how to write 'Hello, World!' program in 5 major languages which are:

1. Java
2. C
3. C++
4. C#
5. Python
6. SQL
7. Ruby

 Java:

public class HelloWorld {

    public static void main(String[] args) {
        // Prints "Hello, World" to the terminal window.
        System.out.println("Hello, World!");
    }

}

C:

#include "stdio.h"

int main(void)
{
    printf("Hello, World!");
    return 0;
}

C++:

#include "iostream"
using namespace std;

int main()
{
    cout << "Hello, World!";
    return 0;
}

C#:

public class Hello
{
   public static void Main()
   {
      System.Console.WriteLine("Hello, World!");
   }
}

Python:

print("Hello, world!")

SQL:

DECLARE
   message  varchar2(20):= 'Hello, World!';
BEGIN
   dbms_output.put_line(message);
END;
/

Ruby:

puts 'Hello, World!'