Incompatible magic value 1008807213 при запуске апплета в FF

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Убил день. Так решение и не нашел . Банальный апплет -

package scan;

import java.applet.Applet;
import java.awt.Graphics;

public class Scan extends Applet {  
   public void paint(Graphics dr) {
    dr.drawString("Hello.", 10, 30); 
  }  
}

который запускается в netbeans, никак не хочет работать в браузере на странице

<html><head>
</head><body>
<h2>Test page </h2>
  <div ><applet code="Scan.class" width="100" height="100"></applet></div>
</body>
</html>

Java выдает сообщение -

ava.lang.ClassFormatError: Incompatible magic value 1008807213 in class file Scan
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
	at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)
	at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

Если добавляю к тегу <applet> jar -

<applet code="Scan.class" archive="scan.jar" width="100" height="100"></applet>

то получаю следующее сообщение -

java.lang.NullPointerException
	at com.sun.deploy.security.CPCallbackHandler.getAllPCodeSources(Unknown Source)
	at com.sun.deploy.security.CPCallbackHandler.access$700(Unknown Source)
	at com.sun.deploy.security.CPCallbackHandler$ParentCallback.strategy(Unknown Source)
	at com.sun.deploy.security.CPCallbackHandler$ParentCallback.openClassPathElement(Unknown Source)
	at com.sun.deploy.security.DeployURLClassPath$JarLoader.getJarFile(Unknown Source)
	at com.sun.deploy.security.DeployURLClassPath$JarLoader.access$900(Unknown Source)
	at com.sun.deploy.security.DeployURLClassPath$JarLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.deploy.security.DeployURLClassPath$JarLoader.ensureOpen(Unknown Source)
	at com.sun.deploy.security.DeployURLClassPath$JarLoader.<init>(Unknown Source)
	at com.sun.deploy.security.DeployURLClassPath$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.deploy.security.DeployURLClassPath.getLoader(Unknown Source)
	at com.sun.deploy.security.DeployURLClassPath.getLoader(Unknown Source)
	at com.sun.deploy.security.DeployURLClassPath.getResource(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Unknown Source)
	at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
	at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)
	at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

И jar-,и class-файлы лежат в том же каталоге что и html Подскажите, пожалуйста, где собака зарыта

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