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JPA Annotation MapKeyTemporal Target: METHOD, FIELD Implemented Interfaces: Annotation This annotation must be specified for persistent map keys of type java.util.Date and java.util.Calendar . It may only be specified for map keys of these types. The MapKeyTemporal annotation can be applied

JPA Annotation Attribute in jakarta.persistence. MapKeyTemporal TemporalType value default null (Required) The type used in mapping java.util.Date or java.util.Calendar . Since: JPA 2.0

. MapKeyTemporal ; import javax.persistence.OneToMany; import javax.persistence.Persistence; import javax ... ; @OneToMany   @ MapKeyTemporal (TemporalType.DATE)   private Map addressHistory = new HashMap