Hibernate JPA @Column Example

@Column

The @Column annotation is used to specify the mapping between a basic entity attribute and the database table column.

JPA defines rules for implicitly determining the name of tables and columns. For a detailed discussion of implicit naming see Naming.

For basic type attributes, the implicit naming rule is that the column name is the same as the attribute name. If that implicit naming rule does not meet your requirements, you can explicitly tell Hibernate (and other providers) the column name to use.

Explicit column naming

@Entity(name = "Product")
public class Product {

@Id
private Integer id;

private String sku;

private String name;

@Column( name = "NOTES" )
private String description;
}

Here we use @Column to explicitly map the description attribute to the NOTES column, as opposed to the implicit column name description.