jpa mapping

@Column
private String nom;
public void setNom(String n) {nom= n;}
public String getNom() {return nom;}

@Id
@GeneratedValue(Strategy = GenerationType.IDENTITY)
private Integer id;

@Id
@GeneratedValue(Strategy = GenerationType.AUTO)
private Integer id;
private void setId(Integer i) { id = i; }
public Integer getId()  { return id; }