Java持久性问题

嗨我是Java持久性的新手。我把注释放在哪里有关系吗？以下两组代码是否相同？Java持久性问题

非常感谢！

@Entity 
@Table(name="user", schema="billing") 
public class User { 
    private long id ; 
    private String userName ; 
    private String password ; 

    @Id 
    @GeneratedValue 
    public long getId() { 
     return id; 
    } 
    public void setId(long id) { 
     this.id = id; 
    } 
    @Column(name="password", length=20) 
public String getPassword() { 
    return password; 
} 
public void setPassword(String password) { 
    this.password = password; 
} 
    @Column(name="user_name",length=15) 
public String getUserName() { 
    return userName; 
} 
public void setUserName(String userName) { 
    this.userName = userName; 
}

}

对比：

@Entity 
@Table(name="user", schema="billing") 
public class User { 
    @Id 
    @GeneratedValue 
    private long id ; 
    @Column(name="user_name",length=15) 
    private String userName ; 
    @Column(name="password", length=20) 
    private String password ;  

    public long getId() { 
     return id; 
    } 
    public void setId(long id) { 
     this.id = id; 
    } 
    public String getPassword() { 
    return password; 
} 
public void setPassword(String password) { 
    this.password = password; 
} 
    public String getUserName() { 
    return userName; 
} 
public void setUserName(String userName) { 
    this.userName = userName; 
}

}

来源

2010-06-07 leon

可能重复[Hibernate/JPA - 注释bean方法vs字段]（http://stackoverflow.com/questions/942035/hibernate-jpa-annotating-bean-methods-vs-田） – 2010-06-07 20:38:39