NullPointerException JSF

javax.servlet.ServletException: #{emailBean.enviarEmailGmail}: java.lang.NullPointerException
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)
	org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
	org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)

@Entity
public class EmailBean 
{
	private static final String NAO_FOI_POSSIVEL_ENVIAR_E_MAIL = "Não foi possível enviar o e-mail. Motivo: ";
	private File[] anexo;
	private String assuntoEmail;
	private String corpoEmail;
	private String emailRemetente;
	private String mimeCorpoEmail;
	private String nomeRemetente;
	private String portaServidor;
	private String smtpServidor;
	private String[] emailDestinatario;
	private String[] nomeDestinatario;

	public EmailBean()
	{
		super();
	}
                 //gets e sets

public class GeradorEmail 
{
	private EmailBean emailBean ;

public String enviarEmailGmail()    
	{
		java.security.Security.addProvider(new Provider());   
		  
        Properties mailProps = new Properties();   
        mailProps.put("mail.transport.protocol", "smtp"); // diz que utilizarei um protocolo de seguranca     
        mailProps.put("mail.smtp.starttls.enable", "true"); // diz que utilizarei o protocolo de seguranca TLS     
        mailProps.put("mail.smtp.host", "smtp.gmail.com"); // diz que o servidor que estou mandando o gmail     
        mailProps.put("mail.smtp.auth", "true"); // diz que e necessario uma autenticacao     
        mailProps.put("mail.smtp.user", "[email removido]");   
        mailProps.put("mail.debug", "true");   
        mailProps.put("mail.smtp.port", "465");   
        mailProps.put("mail.smtp.debug", "true");   
        mailProps.put("mail.mime.charset", "ISO-8859-1");   
        mailProps.put("mail.smtp.socketFactory.port", "465");   
        mailProps.put("mail.smtp.socketFactory.fallback", "false");   
        mailProps.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");   
  Authenticator auth = new Autenticacao();   
        Session session = Session.getDefaultInstance(mailProps, auth);   
  
        Message message = new MimeMessage(session);   
  
        try 
        {
	        message.setFrom(new InternetAddress(emailBean.getEmailRemetente()));   
	        message.setHeader("Disposition-Notification-To","[email removido]");
	        
	        String[] destAtual = emailBean.getEmailDestinatario();
        
			message.setRecipient(Message.RecipientType.TO, new InternetAddress(destAtual[0]));
			message.setSubject(emailBean.getAssuntoEmail());   
			  
	        message.setContent(emailBean.getCorpoEmail(), "text/html");   

	        Transport.send(message);
	        return "Email Enviado";
		} 
        catch (AddressException e) 
        {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return "Email Nao Enviado";
		} catch (MessagingException e) 
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
			return "Email Nao Enviado";
		} 
    }

private EmailBean emailBean = new EmailBean();