Duvida ao rodar minha classe usando SOAP?

Estou aprendendo WebService, e quando vou rodar estou com esse erro:

OBS o erro só acontece quando usei @WebMethod(operationName = “todosOsItens”)
package br.com.caelum.estoque.ws;

import java.util.List;

import javax.jws.WebMethod;
import javax.jws.WebService;

import br.com.caelum.estoque.modelo.item.Item;
import br.com.caelum.estoque.modelo.item.ItemDao;

@WebService
public class EstoqueWS {

	private ItemDao dao = new ItemDao();

	@WebMethod(operationName = "todosOsItens")
	public List<Item> getItens() {
		System.out.println("Imprimindo uma lista de Item.");
		List<Item> todosItens = dao.todosItens();
		return todosItens;
	}

}


public class PublicaWebService {

	public static void main(String[] args) {
		EstoqueWS service = new EstoqueWS();
		
		String url = "http://localhost:8080/estoquews";
		
		Endpoint.publish(url, service); //endereco
	}
}

Erro

Exception in thread “main” com.sun.xml.internal.ws.server.ServerRtException: Erro de Runtime do Servidor: java.net.BindException: Address already in use: bind

at com.sun.xml.internal.ws.transport.http.server.ServerMgr.createContext(ServerMgr.java:117)

at com.sun.xml.internal.ws.transport.http.server.HttpEndpoint.publish(HttpEndpoint.java:64)

at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.publish(EndpointImpl.java:232)

at com.sun.xml.internal.ws.spi.ProviderImpl.createAndPublishEndpoint(ProviderImpl.java:126)

at javax.xml.ws.Endpoint.publish(Endpoint.java:240)

at br.com.caelum.estoque.ws.PublicaWebService.main(PublicaWebService.java:12)

Caused by: java.net.BindException: Address already in use: bind

at sun.nio.ch.Net.bind0(Native Method)

at sun.nio.ch.Net.bind(Net.java:433)

at sun.nio.ch.Net.bind(Net.java:425)

at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)

at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)

at sun.net.httpserver.ServerImpl.(ServerImpl.java:100)

at sun.net.httpserver.HttpServerImpl.(HttpServerImpl.java:50)

at sun.net.httpserver.DefaultHttpServerProvider.createHttpServer(DefaultHttpServerProvider.java:35)

at com.sun.net.httpserver.HttpServer.create(HttpServer.java:130)

at com.sun.xml.internal.ws.transport.http.server.ServerMgr.createContext(ServerMgr.java:86)

… 5 more