My signed Java applet has been running fine until Java update 19. Now some but not all of our users on Java Update 19 report a java security message stating that our applet contains both signed and unsigned code.

The process for creating our applet is as follows:

1: Clean and Build the applet project in Netbeans IDE. 2: Open the Applet jar file in WinRAR and add the required mysql JDBC driver .class files to the jar file. 3: Sign the applet jar file.

Can someone please tell me how to determine what code is signed and what code is not signed in our applet? Is there a better way to include the mysql JDBC driver jar file in our applet other than copying the jar file contents into our applet jar file?

Thanks