有一个简单的Java Web服务错误

SayHello Web Service started.
Exception in thread "main" com.sun.xml.internal.ws.server.ServerRtException: Server Runtime Error: java.net.BindException: Address already in use: bind
    at com.sun.xml.internal.ws.transport.http.server.ServerMgr.createContext(Unknown Source)
    at com.sun.xml.internal.ws.transport.http.server.HttpEndpoint.publish(Unknown Source)
    at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.publish(Unknown Source)
    at com.sun.xml.internal.ws.spi.ProviderImpl.createAndPublishEndpoint(Unknown Source)
    at javax.xml.ws.Endpoint.publish(Unknown Source)
    at com.myfirst.wsServer.RunService.main(RunService.java:14)
Caused by: java.net.BindException: Address already in use: bind
    at sun.nio.ch.Net.bind(Native Method)
    at sun.nio.ch.ServerSocketChannelImpl.bind(Unknown Source)
    at sun.nio.ch.ServerSocketAdaptor.bind(Unknown Source)
    at sun.net.httpserver.ServerImpl.<init>(Unknown Source)
    at sun.net.httpserver.HttpServerImpl.<init>(Unknown Source)
    at sun.net.httpserver.DefaultHttpServerProvider.createHttpServer(Unknown Source)
    at com.sun.net.httpserver.HttpServer.create(Unknown Source)
    ... 6 more