Juergen Hoeller opened SPR-17143 and commented

Spring's support for the Sun HTTP Server, as included in JDK 6 to 8, is rather outdated in the meantime. JDK 11 factored out all such server pieces, including JAX-WS, so this does not have a first-class role at all anymore. For Spring's purposes, an embedded Tomcat/Jetty/Undertow is a fully-featured replacement.

Referenced from: commits 2b051b8