HTML

<!doctype html>
<html lang="fr">
<head>
  <meta charset="utf-8">
  <title>Title</title>
  <link rel="stylesheet" href="style.css">
  <script src="script.js"></script>
</head>
<body>
  <!-- Content -->
</body>
</html>

CSS

/*
 * This is a block comment
*/
html {
  overflow-y: scroll; 
}

PHP

<?php
// PHP
include("config.php");
session_start();
$myusername=addslashes($_POST['username']);
?>

Java

import java.util.Map;
import java.util.TreeSet;

/**
 * GetEnv
 */
public class GetEnv {
    /**
     * let's test generics
     * @param args the command line argument
     */

    public static void main(String[] args) {
        int i = 23;
        String test = "coucou";
        // get a map of environnement variables
        Map<String, String> env = System.getenv();
        // build a sorted set out of the keys and iterate
        for(String k: new TreeSet<String>(env.keySet())){
            System.out.printf("%s = %s\n", k, env.get(k));
        }
    }
}