Answer 1

Deprecation is the discouragement of use of some terminology, feature, design, or practice; typically because it has been superseded or is no longer considered efficient or safe – but without completely removing it or prohibiting its use.

https://en.m.wikipedia.org/wiki/Deprecation

P.S. Java Applets are deprecated (or obsolete).

https://en.m.wikipedia.org/wiki/Java_applet