Retrieve JavaMail Session

getsession.java

public Session getSession() {
    Session session = null;

    try {
        final Context rootContext = new InitialContext();
        // This is the default Java context to lookup
        final Context envContext = (Context) rootContext.lookup("java:comp/env");
        // This is the JNDI name of the JavaMail session as defined in Glassfish
        session = (Session) envContext.lookup("mail/newsession");
    } catch (final NamingException ex) {
        ex.printStackTrace();
    }

    return session;
}