### TarefasController V4

```java
package br.com.caelum.tarefas.controller;

import java.util.List;

import javax.validation.Valid;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.RequestMapping;

import br.com.caelum.tarefas.dao.JdbcTarefaDao;
import br.com.caelum.tarefas.modelo.Tarefa;

@Controller
public class TarefasController {

	private JdbcTarefaDao tarefaDao;

	public TarefasController(JdbcTarefaDao tarefaDao) {
    		this.tarefaDao = tarefaDao;
	}

//...
```