Jakarta Persistence (JPA) Annotation Type

jakarta.persistence.Id

Implemented Interfaces:
Annotation
Target:
Method, Field
Identifies the primary key of an entity.

The field or property to which the Id annotation is applied should have one of the following types: any Java primitive type; any primitive wrapper type; String; UUID; Date; Date; BigDecimal; BigInteger.

The mapped column for the primary key of the entity is assumed to be the primary key of the primary table. If no Column annotation is specified, the primary key column name is assumed to be the name of the primary key property or field.

Example: 

 @Id
 public Long getId() { return id; }
See Also:
Since:
Jakarta Persistence (JPA) 1.0
The JPA Primary Key article explains how to use Id.

Annotation Elements

This is a marker annotation with no members/elements.

Additional JDK methods inherited from java.lang.annotation.Annotation

annotationType(), equals(Object), hashCode(), toString()