Maybe he means in browser Java Applets. But they are pretty much dead anyways.
Not that it much matters, since Chrome doesn't support the NPAPI plugin, and FireFox is expected to drop support early in the new year, leaving Applets an essentially IE only thing.
http://openjdk.java.net/jeps/277
There was a session at Java ONE about a set of API that will be gone in Java 10 after this gets introduced in Java 9.