private   void  sendMessage(){
        //sd.show();
         try {
        connect();
        Message mes =  new  MimeMessage(session);
        mes.setFrom( new  InternetAddress(from_mail));
        System.out.println(from_mail);
        mes.setRecipient(Message.RecipientType.TO, new  InternetAddress(to.getText()));
        mes.setSubject(subject.getText());
        mes.setSentDate( new  Date());
        mes.setText(body_mes.getText());
        System.out.println("created message");
        System.out.println(mes);
        System.out.println(to.getText());
        Transport.send(mes);
            //sd.dispose();
        JOptionPane.showMessageDialog( null ,"Сообщение отправлено","",JOptionPane.INFORMATION_MESSAGE);
        } catch (Exception e){
            e.printStackTrace();
            //sd.dispose();
            JOptionPane.showMessageDialog( null ,"Ошибка отправки","",JOptionPane.ERROR_MESSAGE);
        }
        
    }
     private   void  connect(){
        
        StringBuffer connectUrl =  new  StringBuffer();
        connectUrl.append("pop3://");
        connectUrl.append(login+":");
        connectUrl.append(pass+"@");
        connectUrl.append(server+"/");
        Store store =  null ;
        System.out.println(connectUrl);
         try {
            Properties prop =  new  Properties();
            prop.put("mail.smtp.auth",true);
            session = Session.getInstance(prop, null );
            URLName url =  new  URLName(connectUrl.toString());
            System.out.println(url);
            store = session.getStore(url);
            store.connect();
            System.out.println("connected");
        } catch (Exception e){
            e.printStackTrace();
            //sd.dispose();
            JOptionPane.showMessageDialog( null ,"Ошибка соеденения","",JOptionPane.ERROR_MESSAGE);
        }
    }

prop.put("mail.smtp.host",smtp);