Java 9 does not support the ability to deploy applets as serialized objects. In the past, applets were deployed as serialized objects to compensate for slow compression and JVM performance issues. With Java 9, compression techniques are advanced and the JVM has great performance.
If you attempt to deploy your applets as serialized objects, your object attributes and parameter tags will simply be ignored when your applet launches. Starting with Java 9, you can deploy your applets using standard deployment strategies.
