Applet JNLP not accessible in browser ?

Hello,
I am new to java and to programiing in general. Thanks in advance for your help. I can't get an Applet to work in any browser (Google, Mozilla, IE) while it works fine in appletviewer. Why?
The Source:
import java.awt.*;
public class Hwa extends java.applet.Applet {
public void init (){
add(new Label("Hello World"));
compiled in Hwa.class, then in a Hwa.jar file,
The JNLP file:
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="" href="">
<information>
<title>Hw Applet</title>
<vendor>CCN</vendor>
</information>
<resources>
<j2se version="1.4+" href="http://java.sun.com/products/autodl/j2se" />
<jar href="http://www.ccca.eu/Hwa.jar" />
</resources>
</jnlp>
The HwaAPJNLP.html file:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html dir="ltr" lang="fr"><head>
<meta content="text/html; charset=ISO-8859-1" http-equiv="content-type">
<title>CCCAEU</title>
<meta content="" name="author">
<style type="text/css"></style>
<link rel="stylesheet" href="CCCAEU.css" type="text/css">
</head><body>
<applet code="Hwa.class" ref_jnlp="Hwa.jnlp" height="50" width="150"></applet>
</body></html>
All files are copied on the http://ccca.eu/. of the server
Executing appletviewer HwaAPJNLP.html (local copy of the html file) works just fine BUT launching http://www.ccca.eu/HwaAPJNLP.html returns a blank rectangle with the JAVA console message "Detected from bootclasspath: C:\\PROGRA~1\\Java\\jre7\\lib\\deploy.jar" and "Incompatible magic value 1008812135 in class file Hwa". WHY ?
FYI, the ".htaccess" file on my WebServer is
AddType x-mapp-php5 .php
AddType application/x-java-jnlp-file JNLP
Thanks in advance for your support.

Thank you Baftos. It works but I still do not understand the logic. Before, my Hwa.class was only accessible through my Hwa.jar file on http://www.ccca.eu/Hwa.jar, itself defined as the reference if the jnlp file, see above. My understanding of the jnlp logic is that the html page will load the Hwa.class from the Hwa.jar file. Is that correct ? Thanks to your post, I copied the Hwa.class directly under http://www.ccca.eu/Hwa.class and yes, when accessed through the browser, I can download it. Even better, my previous html page above - unchanged - now WORKS. Thanks for letting me know where I think wrong.

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import java.awt.*;
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import java.io.PrintStream;
import java.net.MalformedURLException;
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