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JPA Annotations for Access Modes

Persistence fields can either be accessed by JPA directly (as fields) or indirectly (as properties and get/set methods). JPA 2 provides an annotation and an enum for setting the access mode:

Can I use ObjectDB with languages other than Java?

ObjectDB can be used by Java Virtual Machine (JVM) languages, such as Java, Groovy and Scala. It can also be used with other languages, such as Python, JavaScript, Ruby and PHP, but currently only with their JVM implementations (e.g. Jython for Python, JRuby for Ruby

Step 2: Define a JPA Entity Class

> Enter guest as the package name - use exactly that case sensitive package name. Enter Guest as the class name

JPA Web App Tutorial - Eclipse Project

and click Next. Select the guestbook-web directory as Root ... the project node and select Run As > Run On Server. (this command is available only 

Step 4: Add a Servlet Class

GuestServlet as the class name - use exactly that case sensitive ... /netbeans/ee/jsp">adding a JSP page that will serve as the application view and will produce the guestbook output.

Step 2: Define a JPA Entity Class

>Enter Guest as the class name - use exactly that case sensitive class name. Enter guest as the package name - use

Step 1: Create a Web Project

v6.0 as the Target runtime. Note: You may have to add Tomcat 6 as a new server by

Step 3: Add a Context Listener Class

>GuestListener as the class name - use exactly that case sensitive class ... and creates an EntityManagerFactory instance and stores it as an application scope

Getting Started with JPA - Eclipse Project

and click Next. Select the points-console directory as Root Directory and press ... the project in Eclipse: Right click the project node and select Run As > Java Application

Which API should I use - JPA or JDO?

applications. You can use JPA as the primary API, and if necessary, switch to JDO as a secondary API