<dependency>
            <groupId>org.glassfish.tyrus</groupId>
            <artifactId>tyrus-server</artifactId>
            <version>1.15</version>
        </dependency>

 Server server = new Server("localhost", 8025, "/websockets", WordgameServerEndpoint.class);

  Server server = new Server("localhost", 8025, "/websockets",?????, WordgameServerEndpoint.class);

--- exec-maven-plugin:1.5.0:exec (default-cli) @ ws ---
Exception in thread "main" java.lang.NoClassDefFoundError: org/glassfish/tyrus/spi/ServerContainerFactory
	at org.glassfish.tyrus.server.Server.start(Server.java:199)
	at ws.server.WebSocketServer.runServer(WebSocketServer.java:22)
	at ws.server.WebSocketServer.main(WebSocketServer.java:15)
Caused by: java.lang.ClassNotFoundException: org.glassfish.tyrus.spi.ServerContainerFactory
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
	... 3 more

public class WebSocketServer {

    public static void main(String[] args) {
        runServer();
    }

    public static void runServer() {
        try {
            Server server = new Server("localhost", 8025, "/websockets", null, WordgameServerEndpoint.class);

            server.start();
            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            System.out.print("Please press a key to stop the server.");
            reader.readLine();
        } catch (DeploymentException | IOException ex) {
            Logger.getLogger(WebSocketServer.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}

public class WebSocketServer {

    public static void main(String[] args) {
        runServer();
    }

    public static void runServer() {
        try {
            Server server = new Server("localhost", 8025, "/websockets", null, WordgameServerEndpoint.class);

            server.start();
            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            System.out.print("Please press a key to stop the server.");
            reader.readLine();
        } catch (DeploymentException | IOException ex) {
            Logger.getLogger(WebSocketServer.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}