Criar Tela login e senha

  private void jBOkActionPerformed(java.awt.event.ActionEvent evt) {                                     
        try {
            this.con = (Connection) CriaConexao.getConexao();
        } catch (SQLException ex) {
            JOptionPane.showInputDialog("Erro na conexao");
        }
        sql = "select login,senha from login where login=? and senha=? ";
        try 
        {
            java.sql.PreparedStatement statementLogin = con.prepareStatement(sql);
            statementLogin.setString(1,jTlogin.getText() );//
            String senha = jPsenha.getPassword().toString();
            statementLogin.setString(2,senha );
            Login login = new Login();
            if(login.getLogin().equals("") && login.getSenha().equals(""))
                JOptionPane.showInputDialog("login invalido");
            else 
            {
            JOptionPane.showInputDialog("login validado");
            new TelaLogin().setVisible(false);
            if(login.getTipodeUsuario().equals("1"))
               new TelaCadastroProblema().setVisible(true);
            else
                new TelaAdmin().setVisible(true);
            }
        } catch (SQLException ex) {
        
        }