Getting data from database - mysql

Question

I'm trying to retrieve data from database in Primefaces datatable. My database table name is dept and it has two columns id (int not null primary key) and name (varchar 255 not null). I'm using println to show size of records. But after starting project nothing show up. In database table are 2 records.
DeptTest.java
package logon;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.enterprise.context.SessionScoped;
import javax.faces.bean.ViewScoped;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.PersistenceUnit;
import javax.persistence.Query;
#ViewScoped
#SessionScoped
#javax.faces.bean.ManagedBean(name = "depTest")
public class DeptTest implements Serializable {
private static final long serialVersionUID = 1L;
private static final ArrayList<Department> orderList = new ArrayList<Department>();
public ArrayList<Department> getOrderList() {
return orderList;
}
#PersistenceUnit(unitName = "Webbeans_RESOURCE_LOCAL")
private EntityManagerFactory emf;
public List<Department> getDeptList() {
return deptList;
}
public void setDeptList(List<Department> deptList) {
this.deptList = deptList;
}
public List<Department> deptList = new ArrayList();
#PostConstruct
public void init() {
EntityManager em = emf.createEntityManager();
// Read the existing entries and write to console
Query q = em.createQuery("SELECT d FROM Dept d");
deptList = q.getResultList();
System.out.println("Size dept: " + deptList.size());
}
}