jsp - Error in sending mail in java/servlet -

i trying send email using java. face error below

javax.mail.authenticationfailedexception: failed connect, no password specified

why getting error when have passed correct email-id , password authentication?

this code

import java.io.ioexception; import java.net.passwordauthentication; import java.util.properties;  import javax.mail.authenticator; import javax.mail.message; import javax.mail.messagingexception; import javax.mail.session; import javax.mail.transport; import javax.mail.internet.internetaddress; import javax.mail.internet.mimemessage; import javax.servlet.servletexception; import javax.servlet.annotation.webservlet; import javax.servlet.http.httpservlet; import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse;  /**  * servlet implementation class testmail  */ @webservlet("/testmail") public class testmail extends httpservlet {     private static final long serialversionuid = 1l;       public testmail() {         super();      }      protected void doget(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {         todo(request,response);      }       protected void dopost(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {         todo(request,response);      }      private void todo(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {         // todo auto-generated method stub         request.setcharacterencoding("utf8");         response.setcharacterencoding("utf8");          properties props = new properties();         props.put("mail.smtp.auth", "true");         props.put("mail.smtp.starttls.enable","true");         props.put("mail.smtp.host","smtp.gmail.com");         props.put("mail.smtp.post","587");            session session = session.getdefaultinstance(props,                 new authenticator() {                     protected passwordauthentication  getpasswordauthentication() {                     return new passwordauthentication(                                 "testing@gmail.com", "testing123");                             }                 });          message message=new mimemessage(session);         try {             message.setfrom(new internetaddress("testing@gmail.com","hello"));          message.setrecipients(message.recipienttype.to,internetaddress.parse("testing@gmail.com"));         message.setsubject("testing email");         message.settext("hello testing mail \n \n congrets");         transport.send(message);         system.out.println("mail sent successfully");         } catch (messagingexception e) {             // todo auto-generated catch block             e.printstacktrace();         }      }  } 

the javamail authenticator found in javax.mail package , different java.net class of same name. 2 don't share same authenticator javamail api works java 1.1, didn't have java.net variety.

refer : http://www.rgagnon.com/javadetails/java-0538.html