jakarta-ee

How to implement “Stay Logged In” when user login in to the web application

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Java EE 8 and up If you’re on Java EE 8 or newer, put @RememberMe on a custom HttpAuthenticationMechanism along with a RememberMeIdentityStore. @ApplicationScoped @AutoApplySession @RememberMe public class CustomAuthenticationMechanism implements HttpAuthenticationMechanism { @Inject private IdentityStore identityStore; @Override public AuthenticationStatus validateRequest(HttpServletRequest request, HttpServletResponse response, HttpMessageContext context) { Credential credential = context.getAuthParameters().getCredential(); if (credential != null) { … Read more

Does Tomcat require JDK or JRE?

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Tomcat’s RUNNING.txt which you can find in the root of the bundle states that Apache Tomcat requires Java Standard Edition Runtime Environment (JRE) to run. Minimum version of JRE depends on the version of Tomcat: for Tomcat 6.0 it is Java 5, for Tomcat 7.0 – Java 6. However you can also use JDK because, … Read more

Where can I download Java EE 6 Tutorial Examples? [closed]

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I too couldn’t see the tutorial files in the update tool. The download link given by shurik2533 are the tutorial files for JavaEE5, not JavaEE6. Working on what John put I downloaded the files from the svn repository using: $ svn export https://svn.java.net/svn/javaeetutorial~svn JavaEE6tutorial/ To download only the examples: $ svn export https://svn.java.net/svn/javaeetutorial~svn/branches/javaee-tutorial-6/examples/ JavaEE6TutorialExamples

When to use Stateful session bean over Stateless session bean?

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First, you have to understand how the beans are created and handled on the server. For stateless session beans the server can maintain a variable amount of instances in a pool. Each time a client requests such a stateless bean (e.g. through a method) a random instance is chosen to serve that request. That means … Read more

Maven2: Best practice for Enterprise Project (EAR file)

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You create a new project. The new project is your EAR assembly project which contains your two dependencies for your EJB project and your WAR project. So you actually have three maven projects here. One EJB. One WAR. One EAR that pulls the two parts together and creates the ear. Deployment descriptors can be generated … Read more

Difference between web server, web container and application server

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Your question is similar to below: What is the difference between application server and web server? In Java: Web Container or Servlet Container or Servlet Engine : is used to manage the components like Servlets, JSP. It is a part of the web server. Web Server or HTTP Server: A server which is capable of … Read more

Where to use EJB 3.1 and CDI?

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Yes, you can freely mix both CDI and EJB and achieve some great results. It sounds like you are using @WebService and @Schedule, which are good reasons for adding EJB to the mix. There’s a lot of confusion out there, so here is some general information on EJB and CDI as they relate to each … Read more

What is an EJB, and what does it do?

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Why really use them? (Why not just stick to POJO?) IF you need a component that accesses the database, or accesses other connectivity/ directory resources, or is accessed from multiple clients, or is intended as a SOA service, EJBs today are usually “bigger, stronger, faster (or at least more scalable) and simpler” than POJOs. They … Read more

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