UrbanPro

Location Set your Location

Login Ask & Answer Success Stories Paid Courses Free Classes Tuition & Classes Fees Write a Review All Categories Help Center
Post your Learning Need Signup as a Tutor
✕

Popular Cities

Bangalore

Hyderabad

Delhi

Mumbai

Chennai

Pune

Kolkata

Gurgaon

Ahmedabad

Jaipur

Noida

✕

Learn Java Training from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Book a Free Demo

Java > Learn Java > What are the advanced features of EJB3.1?
✕

Search in

What are the advanced features of EJB3.1?

Asked by Last Modified  

14 Answers

Learn Java

Follow 0
Answer

Please enter your answer

Experienced QA Trainer

1. Support for direct use of EJBs in the servlet container, including simplified packaging options. The current thought is to allow EJBs in the WEB-INF/classes directory while allowing ejb-jar.xml to reside in the WEB-INF directory, just like the web.xml file. In a similar vein, you would be able to...
read more
1. Support for direct use of EJBs in the servlet container, including simplified packaging options. The current thought is to allow EJBs in the WEB-INF/classes directory while allowing ejb-jar.xml to reside in the WEB-INF directory, just like the web.xml file. In a similar vein, you would be able to place an EJB jar into the WEB-INF/lib directory. 2. EJB Timer Service enhancements to support cron-like scheduling, deployment-time timer creation, and Stateful Session Bean timed objects. 3. Support for stateful web services via Stateful Session Bean web service endpoints. read less
Comments
Dislike Bookmark

Support for direct use of EJBs in the servlet container, including simplified packaging options. The current thought is to allow EJBs in the WEB-INF/classes directory while allowing ejb-jar.xml to reside in the WEB-INF directory, just like the web.xml file. In a similar vein, you would be able to place...
read more
Support for direct use of EJBs in the servlet container, including simplified packaging options. The current thought is to allow EJBs in the WEB-INF/classes directory while allowing ejb-jar.xml to reside in the WEB-INF directory, just like the web.xml file. In a similar vein, you would be able to place an EJB jar into the WEB-INF/lib directory. EJB Timer Service enhancements... more» read less
Comments
Dislike Bookmark

Coaching

-Singletons:A singleton is a new kind of session bean that is guaranteed to be instantiated once for an application in a particular Java Virtual Machine (JVM)\*. A singleton is defined using the @Singleton annotation. - Application Startup/Shutdown Callbacks. - Sample Application:The Java EE 6...
read more
-Singletons:A singleton is a new kind of session bean that is guaranteed to be instantiated once for an application in a particular Java Virtual Machine (JVM)\*. A singleton is defined using the @Singleton annotation. - Application Startup/Shutdown Callbacks. - Sample Application:The Java EE 6 SDK Preview release includes an application that uses each of the EJB 3.1 features covered in this tip. The application is composed of a servlet, a singleton session bean, and a stateless session bean. Each session bean exposes a no-interface view. read less
Comments
Dislike Bookmark

Let's simplify Coding, It's a great Fun.

Hi, One of the great feature of EJB3.1 is that they are POJO which means the EJBs can now be unit tested without Enterprise Server. Second being POJO, they do not need to implement and extend any Server related interface or classes as in the earlier 2.x EJBs. Vijay
Comments
Dislike Bookmark

Optional interfaces for Session beans and Singleton beans. EJB Timer Service enhancements and simplified packaging. that have been discussed in detail—EJB Timer Service enhancements and simplified packaging. Remember, none of this has been finalized yet, although a draft of the specification will...
read more
Optional interfaces for Session beans and Singleton beans. EJB Timer Service enhancements and simplified packaging. that have been discussed in detail—EJB Timer Service enhancements and simplified packaging. Remember, none of this has been finalized yet, although a draft of the specification will be released for review soon. All of this is really just a peek into the inner workings of the JCP so that you have a chance to provide feedback. read less
Comments
Dislike Bookmark

Tutor

agree.
Comments
Dislike Bookmark

6yrs exp in j2ee

like pojo , for persistany
Comments
Dislike Bookmark

Professional Java J2EE Training with certification focus or Maths/English Tuition

Support for direct use of EJBs in the servlet container, including simplified packaging options. The current thought is to allow EJBs in the WEB-INF/classes directory while allowing ejb-jar.xml to reside in the WEB-INF directory, just like the web.xml file. In a similar vein, you would be able to place...
read more
Support for direct use of EJBs in the servlet container, including simplified packaging options. The current thought is to allow EJBs in the WEB-INF/classes directory while allowing ejb-jar.xml to reside in the WEB-INF directory, just like the web.xml file. In a similar vein, you would be able to place an EJB jar into the WEB-INF/lib directory. EJB Timer Service enhancements to support cron-like scheduling, deployment-time timer creation, and Stateful Session Bean timed objects. Support for stateful web services via Stateful Session Bean web service endpoints. read less
Comments
Dislike Bookmark

IT Professional Trainer with 15 years of experience in IT Industry

Status DescriptionSTATUS_ACTIVE transaction is in an active stateSTATUS_MARKED_ROLLBACK transaction is marked for rollbackSTATUS_PREPARED transaction is in the prepared state because allresources have agreed to commitSTATUS_COMMITTED associated transaction has been committedSTATUS_ROLLEDBACK associated...
read more
Status DescriptionSTATUS_ACTIVE transaction is in an active stateSTATUS_MARKED_ROLLBACK transaction is marked for rollbackSTATUS_PREPARED transaction is in the prepared state because allresources have agreed to commitSTATUS_COMMITTED associated transaction has been committedSTATUS_ROLLEDBACK associated transaction has been rolled backSTATUS_UNKNOWN status for associated transaction is not knownSTATUS_NO_TRANSACTION no associated transaction in the current threadSTATUS_PREPARING associated transaction is preparing to be committed andawaiting response from subordinate resourcesSTATUS_COMMITTING transaction is in the process of committingSTATUS_ROLLING_BACK transaction is in the process of rolling back. read less
Comments
Dislike Bookmark

Trainer

EJB Interfaces are Optional -- @Stateless or @Stateful. The Singleton Beans are Here-@Singleton. It’s Time for Timer Service Features-@Timeout, @Schedule Stripped Down EJB Packaging-no need to create a separate EJB jar module. Rather, EJBs can be directly dropped into the WEB-INF/classes directory...
read more
EJB Interfaces are Optional – @Stateless or @Stateful. The Singleton Beans are Here-@Singleton. It’s Time for Timer Service Features-@Timeout, @Schedule Stripped Down EJB Packaging-no need to create a separate EJB jar module. Rather, EJBs can be directly dropped into the WEB-INF/classes directory and deployed as part of the WAR. In a similar vein, the ejb-jar.xml deployment descriptor, if you happen to be using one, can be placed into the WEB-INF directory along with the web.xml file. It may also be possible to place an EJB jar into the WEB-INF/lib directory. Asynchronous Invocation of Session Beans-annotating a session bean method with @Asynchronous. EJB 3.1 can also support a return type of java.util.concurrent.Futureread less
Comments
Dislike Bookmark

View 12 more Answers

Related Questions

What is the use of package in JAVA?
Have you ever observed why we all are having kitchen / hall / bedroom or any? Have you ever observed why most of the bags contains zips and folders ? Have you ever observed why people create different...
Pushpendra
Hi sir, I'm confused between .net and java. What to choose for a career. I have little bit knowledge of asp.net. Please guide me for this. Thank you
Hello Kirit, The application which were devloped about 2 decades back was mostly coded in java and so you will see so many of the application (in several company and outside) written in java. .Net(collectively...
Kirit
I completed my graduation in 2017, now working as an HR Executive in a Consultancy. I want to move to IT Sector. Which course is best for me to learn and get success in life? Please Suggest me
Dear Kumar, My suggestion is to - become good in one programming language - preferably Java and one O/S preferably Linux. Be aware of Open Source systems. Try to identify the opportunities in your existing...
Kumar
Is there any disadvantage if I load a package multiple times?
Only once complied and executed.
Anitha
Is it really needed to do Java training before graduation, to get a job?
Yes, It's must to get better opportunities and to standard alone in IT field. Not only core Java but also learn Spring,Hinernat ,Struts. ANGULARJS add an advantage to get job easily.
Udaybhan

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Importance of Constructor's Visibility.
While developing program or implementing Singleton pattern we have learnt to mention constructor as private and known reason is -> to blocked its direct call from outside of class. But did we think...
M

Milan M.

0 0
0
Lambda Expressions in Java
A lambda expression, introduced in Java 8 is similar to a block of code resembling an anonymous function that can be passed to constructors or methods for execution as an argument. Examples: a)() ->...

Ashish Somvanshi

0 0
0
ListIterator Example
public class ListIteratorEx { public static void main(String args) { List<String> li = new ArrayList<String>(); li.add("java1"); li.add("java2"); li.add("java3"); li.add("java4"); ListIterator...
S

Sarthak C.

0 0
0
GIT
In software engineering, software configuration management (SCM) is the task of tracking and controlling changes in the software, part of the larger cross-disciplinary field of configuration management....
R

Rahul Kumar

0 0
0
Java Interview Questions & Answers
Java Interview Questions have been designed especially to get you acquainted with the nature of questions you may encounter during your interview for the subject of Java Programming Language. As per my...

Dev Group

2 0
0

Recommended Articles

Why Java is the Most Popular Programming Language

Designed in a flexible and user-friendly demeanor, Java is the most commonly used programming language for the creation of web applications and platform. It allows developers to “write once, run anywhere” (WORA). It is general-purpose, a high-level programming language developed by Sun Microsystem. Initially known as an...

Read full article >

Top 5 Reasons to Learn JavaScript

Before we start on the importance of learning JavaScript, let’s start with a short introduction on the topic. JavaScript is the most popular programming language in the world, precisely it is the language - for Computers, the Web, Servers, Smart Phone, Laptops, Mobiles, Tablets and more. And if you are a beginner or planning...

Read full article >

Some Popular IT Courses in Current Market

In the domain of Information Technology, there is always a lot to learn and implement. However, some technologies have a relatively higher demand than the rest of the others. So here are some popular IT courses for the present and upcoming future: Cloud Computing Cloud Computing is a computing technique which is used...

Read full article >

Why Should You Learn Java !

Java is the most famous programming language till date. 20 years is a big time for any programming language to survive and gain strength. Java has been proved to be one of the most reliable programming languages for networked computers. source:techcentral.com Java was developed to pertain over the Internet. Over...

Read full article >

Find Java Training Classes near you
Java Training Classes in Bangalore
Java Training Classes in Hyderabad
Java Training Classes in Pune
Java Training Classes in Chennai
Java Training Classes in Delhi
Java Training Classes in Mumbai
Java Training Classes in Kolkata
Java Training Classes in Noida
Java Training Classes in Gurgaon
Java Training Classes in Ahmedabad

Looking for Java Training Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for Java Training Classes?

The best tutors for Java Training Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Learn Java Training with the Best Tutors

The best Tutors for Java Training Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more

ThinkVidya Learning Pvt Ltd © 2010-2024All Rights Reserved