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Questions tagged [jakarta-ee]

Jakarta EE (formerly known as Java Enterprise Edition, Java EE, and J2EE) is a specification defining a collection of Java-based server and client technologies and how they interoperate. This is the master tag. For more specific API questions, please use [jsf], [servlets], [jpa], [cdi], [ejb], etc.

Java Enterprise Edition (Java EE) is a specification defining a collection of Java-based technologies and how they interoperate. Java EE specifies server and client architectures and uses profiles to define technology sets targeted at specific classes of applications. Numerous implementations are available in the form of both commercial products and open source projects. It is also possible to assemble full or partial implementations using constituent components.

From the Java EE 6 specification:

All Java EE profiles share a set of common features, such as naming and resource injection, packaging rules, security requirements, etc. This guarantees a degree of uniformity across all products, and indirectly applications, that fall under the "Java EE platform" umbrella. This also ensures that developers who are familiar with a certain profile, or with the full platform, can move easily to other profiles, avoiding excessive compartmentalization of skills and experience.

Java EE is currently migrating to the Eclipse Foundation under the top-level project EE4J, with the intent of introducing a more open community process with a faster release cycle. Under this process, Java EE has been rebranded as Jakarta EE.

References

Specifications


Official documentation


Official tutorials


Java EE learning resources


Java EE version history


Java EE on Social Media

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why doesn't the servlet retrieve the part ? It shows null as the file name

The html snippet sends a post request to a servlet named servlet. The request is of type multipart/form-data.But servlet finds nothing and prints null for the name of the part I try to retrieve. Why is that ?
Suhail Gupta
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Is there a way to determine the Java EE version at runtime?

Is there programmatic way to determine which version of the java ee environment is available?
Josue
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activemq http proxy

I need to connect a ActiveMQ-Listener to a broker outside the firewall through an HTTP/HTTPS-Proxy. I've searched everywhere but haven't found a solution how to set the proxy settings for the AcitveMQ-Client. ActiveMQ is using Apache HttpClient but…
buddha089
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Design pattern to use in Preview mode?

I have to provide a functionality where the people should be able to preview changes to their profiles before making them permanent. This includes the layout, the text, friends, top friends, photos, etc. The user can go into "preview mode" and…
user1881185
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No way to exclude method from being exposed by JAX-WS as web service operation

I'm creating a web service in Java EE 6 annotating an enterprise bean with @WebService. I need to expose only some of the bean methods, so I've annotated with @WebMethod only the required ones. Unfortunately JAX-WS ignores the annotations and try to…
remigio
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Jave EE application does not recognize Google Visualization API

I would like to include the charts of Google Visualization API in my Java EE application. However, whatever I do, the application does not recognize the API. I have used it like this before, so I do not understand what I am doing wrong. Could…
John Hendrik
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Java EE vs Standalone

I'm working on a project where we need to build several 'standalone' modules connecting to one database. These modules are mainly background business processes, so not much frontend. Except for one web module showing the data and allowing basic CRUD…
Robe Elckers
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Java EE 5 dependency injection?

Since Java EE 5 does not have CDI, how does DI work in here? Can an EJB be injected with @EJB in a class that is a non-EJB? Can an EntityManager be injected with @PersistenceContext in a class that is a non-EJB (container managed not resource local…
Random42
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create a Jax-RS RESTful service that accepts both POST and GET?

I'm converting one of my existing service to become RESTful and I've got the basic things working with RestEasy. Some of my client apps should be able to execute both GET and POST requests to several services. I'm just seeking if there is any easy…
Charith De Silva
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Should I use Security Manager in Java web applications?

Is it sufficient to secure a Java web application with the rights of the user that is running the application server process or is it reasonable also to use SecurityManager with a suitable policy file? I have used to do the former and not the…
Kaitsu
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Conversion Error setting value '52' for 'null Converter'

I'm new to JSF and I have been trying to store data from a form that uses a h:selectOneMenu to get the category of a product. The h:selectOneMenu is being populated from the DB, however, when trying to store a product in the DB, I am getting an…
lv10
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How to exclude classes from a packaged webapp with maven

How can I filter certain classes in /target/classes from going into /target/[webapp]/WEB-INF/classes? I want them compiled into /target/classes/ but not in the final war.
kebernet
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Starting Java EE MVC

I'm trying to learn Java EE, starting with Servlets and JSPs in an MVC architecture. I know Servlets are often used as the controller and JSPs are often used as the view, and that these both interact with the model, the back end java application on…
Voxl
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Can we invoke a servlet without in web.xml entry

In one of the code i saw that, there was no tags and only its declared as below startServlet com.login.StartupServlet …
Punith Raj
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How to run java servlet?

I have a servlet. I'm new in java. But i need to run the servlet. It has two methods: public void doGet (HttpServletRequest request, HttpServletResponse response) {...} and public void doPost HttpServletRequest request, …
Dmytro Plekhotkin
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