Recently I have come across through this doubt. Is it possible that a EJB3.0 entities can be interfaces or abstract classes? If yes, In what cases? As I think that entities has to override hashcode and equal method and also they have getter and setter methods. Abstract is possible though but what about interfaces?
EJB 3.0 entities as interfaces or abstract classes?
194 Views Asked by Aalekh At
1
There are 1 best solutions below
Related Questions in JAVA
- I need the BIRT.war that is compatible with Java 17 and Tomcat 10
- Creating global Class holder
- No method found for class java.lang.String in Kafka
- Issue edit a jtable with a pictures
- getting error when trying to launch kotlin jar file that use supabase "java.lang.NoClassDefFoundError"
- Does the && (logical AND) operator have a higher precedence than || (logical OR) operator in Java?
- Mixed color rendering in a JTable
- HTTPS configuration in Spring Boot, server returning timeout
- How to use Layout to create textfields which dont increase in size?
- Function for making the code wait in javafx
- How to create beans of the same class for multiple template parameters in Spring
- How could you print a specific String from an array with the values of an array from a double array on the same line, using iteration to print all?
- org.telegram.telegrambots.meta.exceptions.TelegramApiException: Bot token and username can't be empty
- Accessing Secret Variables in Classic Pipelines through Java app in Azure DevOps
- Postgres && statement Error in Mybatis Mapper?
Related Questions in EJB
- Difference between JARs and EJB JARs from a usage perspective
- Arquillian Embedded Derby database columnDefinition="text"
- Weblogic 12c web application not start properly after server reboot
- EJB injection fails in custom ConstraintValidator on JPA persist
- EJB stateless bean can only return value, cannot print
- Is it possible to have Web & JPA & EJB in 1 project in Eclipse?
- Jackson error: java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/Versioned
- Wildfly - Infinispan Transactions configuration
- How do I change callerPrincipal from EJB timer?
- Why is my EntityManager not properly injected?
- how do I layer EJB3 and servlets correctly?
- How to fill @EJB annotated fields programmatically via glassfish container?
- Transaction fails with IJ000457, IJ000461 and IJ000356 on first time, but works thereafter
- Servlet not working in EJB Project in Intellij IDEA
- EJB injection not working in different classes
Related Questions in EJB-3.0
- EJB Lookup Issue with WebSphere Application Server 6.1
- Inject a parameter from client to ejb bean in the context
- Jboss 6.3: Stateful bean: cannot get the container to hold conversational state
- Exception in using appclient jar in EJB 3 :javax.ejb.EJBException: java.rmi.MarshalException:
- ear deployed successfully but context missing in jboss as 7
- state for one or more table in DB with EJB3
- Can I call from one ejb3 session bean method to other method in same session bean ?
- havaing error in jpql query
- can I use the same EntityManager (same PersistenceContext) to persist a few EntityBean of different types
- 2 BMT ejbs 1 single TX = impossible?
- Glassfish 3.0: Exception while deploying ejb module...Invalid ejb j ar: it contains zero ejb
- @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW) doesn't work
- Aspectj : deploying aspects in an existing web application
- IllegalArgumentException: Invalid ejb jar: it contains zero ejb
- EJB3.0 with Hibernate JPA
Related Questions in ENTITIES
- Return more that one entity in RESTful response?
- JPA: many-to-many relationship with @JoinTable having the same column for each side of relationship
- Dependencies in forms Symfony2
- Search all entities Symfony2
- Doctrine2 Lazy Loading
- LINQ2SQL: How to modify fields values when loading anonymous entities?
- JPQL Query a list of Strings inside an Entity
- ManyToOne in a twig template
- Bulk updates using linq entities
- Is it correct to escape "&", ">" and "<" with &, > and < in XML?
- EJB 3.0 entities as interfaces or abstract classes?
- Symfony2 Entities with extended Repository classes
- Symfony 2 : doctrine entities not updated
- Editable Grid Stopped Working for MS Dynamics CRM 2011
- Symfony 2 File Organization
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
You can inherit with EJB, but at the end you have to create concrete classes. You cannot have EJB entities as abstract classes instances or interfaces instances (there is no somehting like this)