Ajuda com Tela de Login

public class LoginDAO {
     private Connection connection;  
     
     String nome;
     String senha;
     
     public LoginDAO(){
         this.connection = new ConnectionFactory().getConnection(); 
     }
    public void pesquisausuario(Login lo){
        String sql = "Select * from Login where nome = ? AND senha = ?";
        
          try {                                        
        PreparedStatement stmt = connection.prepareStatement(sql);   
        stmt.setString(1, lo.getNome()); 
        stmt.setString(2, lo.getSenha());

        stmt.execute();                         
        stmt.close();                         
    } catch (SQLException u) {                  
        throw new RuntimeException(u);        }
    }

  
    }

 Login l = new Login();
      l.setNome(jTextField1.getText());
      l.setSenha(jTextField2.getText());
      
      LoginDAO dao = new LoginDAO();
        dao.pesquisausuario(l);
     
      if(jTextField1.getText().equals("nome") && (jTextField2.getText().equals("senha"))){
            frmPrincipal fr = new frmPrincipal();
            fr.setVisible(true);
            this.setVisible(false);
        }else{
              JOptionPane.showMessageDialog(null,"Login Incorreto, Tente Novamente!");
          }
       
    }