Erro Hibernate Consultar

org.hibernate.hql.ast.QuerySyntaxException: userform is not mapped [from userform]

public class Teste {

	public static void main(String[] args) {
		try {
		
			UserDao userDao = new UserDao();
			
			List<UserForm> listar = userDao.listar();
			for (UserForm userForm2 : listar) {
				System.out.println(userForm2.getNome());
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

// nao sei se esta certo
public List<UserForm> listar()  {
		
		Session session = factory.openSession();
		session.beginTransaction();
		List usuario = session.createQuery("from userform").list(); // userform é o nome da minha tabela no banco
		session.getTransaction().commit();
		return usuario;

	}

<session-factory>
		<!-- DADOS DO BANCO -->
		<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
		<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
		<property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/CadastroComum</property>
		<property name="hibernate.connection.username">postgres</property>
		<property name="connection.password">admin</property>
		
		<property name="connection.pool_size">1</property>
		<property name="show_sql">true</property>
		<property name="hbm2ddl.auto">update</property>

		<mapping class="br.com.UserForm" />
	</session-factory>