Erro (HTTP connection) ao rodar um APPLET no browser

load: class assinatura.PainelAss.class not found.

java.lang.ClassNotFoundException: assinatura.PainelAss.class

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.createApplet(Unknown Source)

at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

Caused by: java.io.IOException: open HTTP connection failed:<a href="http://localhost/sistema/java/Assinatura.jar/assinatura/PainelAss/class.class">http://localhost/sistema/java/Assinatura.jar/assinatura/PainelAss/class.class</a>

at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)

at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)

at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

… 9 more

Exception: java.lang.ClassNotFoundException: assinatura.PainelAss.class