Any symbol in Java code beginning with @ is known as an annotation.
The use of annotations allows you to add metadata to your objects. Examples of annotations follow:
| Annotation | Description |
|---|---|
| @Entity | Identifies the file as an EJB 3.0 entity |
| @NamedQuery | A query that can be used at run time to retrieve data |
| @Table | Specifies the primary table for the entity |
| @Id | Can define which property is the identifier for the entity |
| @Column | Specifies a mapped column for a persistent property or field |
| @ManyToOne | Specifies a type of foreign key relationship between tables |
| @JoinColumn | Specifies the join column and referenced column for a foreign key relationship |
OBSCURE 