How to Make A Hello World Program in Several Languages

The following shows a Hello World program in many different languages. A Hello World program is supposedly the simplest program possible in any language.

B
BASIC

or simply:

C
C

C++

C#

D
D

H
HTML

J
Java

In console: or in window with Swing:

or in dialog:

Javascript

L
LOLCODE

P
Perl

PHP

Python

R
Ruby

S
SimpleC

SmileBASIC

T
THOLITU

W
Witeal or simply: