Jersey, REST and web.xml disables #ServerEndpoint websocket when run in Eclipse - eclipse

Question

I know this is a duplicate, but this question has not been answered yet!
If a REST servlet ist loaded my ServerEndpoint is not loaded. If I rename web.xml the socket is working as expected. I run this application on tomcat9. This is my Endpoint:
#ServerEndpoint(value = "/talk/{BenutzerID}/{Grad}/{Accesskey}")//, encoders = MessageEncoder.class, decoders = MessageDecoder.class)`
public class talk {
//static Set<Session> peers = Collections.synchronizedSet(new HashSet<Session>());
public talk()
{
System.out.println("Talk started! " + this.getClass().toString());
}
#OnOpen
public void onOpen(#PathParam("BenutzerID") Long BenutzerID,
#PathParam("Grad") long Kontaktgrad,
#PathParam("Accesskey") String Accesskey,
Session session) {
And this is my web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<display-name>Archetype Created Web Application</display-name>
<servlet>
<servlet-name>jersey-serlvet</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>jersey-serlvet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>

Answer 1

After cleaning Tomcat the websocket worked.