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Tutorial
16

Step 2: Define a JPA Entity Class

.GeneratedValue; import javax.persistence.Id; @Entity public class Guest implements Serializable { private static final long serialVersionUID = 1L; // Persistent Fields: @Id @GeneratedValue Long id; private String name; private Date signingDate
Tutorial
16

Step 2: Define a JPA Entity Class

.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity public ... ; // Persistent Fields: @Id @GeneratedValue Long id; private String name; private ... in the database. Besides the @Entity annotation and the id field (and its annotations) - the Guest
Tutorial
13

Step 2: Entity Class and Persistence Unit

; import javax.persistence.Id; @Entity public class Guest implements Serializable { private static final long serialVersionUID = 1L; // Persistent Fields: @Id @GeneratedValue Long id; private String name; private Date signingDate; // Constructors: public
Tutorial
13

Step 2: Entity Class and Persistence Unit

.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity ... ; // Persistent Fields: @Id @GeneratedValue Long id; private String name
JPA Doc
11

javax.persistence.metamodel.EntityType

that corresponds to the id attribute declared by the entity or mapped superclass. Return the attribute that corresponds to the id attribute declared by the entity or mapped superclass. Parameters: type - the type of the represented declared id attribute Returns: declared id attribute Throws
JPA Doc
11

javax.persistence.metamodel.IdentifiableType

to the id attribute declared by the entity or mapped superclass. Return the attribute that corresponds to the id attribute declared by the entity or mapped superclass. Parameters: type - the type of the represented declared id attribute Returns: declared id attribute Throws: IllegalArgumentException
JPA Doc
11

javax.persistence.metamodel.MappedSuperclassType

,Y> getDeclaredId(Class type) Return the attribute that corresponds to the id attribute declared by the entity or mapped superclass. Return the attribute that corresponds to the id attribute declared by the entity or mapped superclass. Parameters: type - the type of the represented declared id
Manual
11

Chapter 1 - Quick Tour

your IDE refer to one of the following tutorials: Getting Started with JPA and Eclipse Tutorial Getting ... on how to start using JPA in your IDE with the ObjectDB object database. Given the simplicity of ObjectDB, that should be quick and easy even for a novice.
Manual
11

Defining a JPA Entity Class

(@Id) field defined. As an object database, ObjectDB supports implicit object IDs, so an explicitly
Tutorial
11

Getting Started with JPA - Maven Project

will download the ObjectDB jar automatically. You may also open and run the Maven project in your IDE: NetBeans IDE and IntelliJ IDEA have built in Maven support.