What are not allowed within the ejb container? , JAVA Programming

Assignment Help:

In  order  to  provide  portable  and  reliable  EJB  elements,  the  following  restrictions  apply  to  EJB  code implementation:

1. Avoid using static non-final fields. Defining all static fields in EJB component as final is recommended. This enables the EJB container to provide instances across multiple JVMs.

2. Avoid starting a using thread or new thread synchronization.

3. Avoid using Swing or AWT functionality. EJBs are server side business elements.

4. Avoid using java.io operations or file access. EJB business elements are meant to use source managers such as JDBC to retrieve and store application data. But deployment descriptors may be used to store .

5. Avoid listening or accepting to socket connections. EJB components are not meant to give network socket functionality. However the specification lets EJB elements act as RMI clients or socket clients.

6. Avoid using the reflection API of java. This restriction enforces Java security.

 


Related Discussions:- What are not allowed within the ejb container?

How trojan horses or worms affect a computer system, How Trojan Horses or W...

How Trojan Horses or Worms affect a computer system? What guidelines should be adopted to troubleshoot along with malicious software? Trojan horses are stand-alone programs. Th

COMPRE METHOD, Implement the compare method of the following class Rectangl...

Implement the compare method of the following class RectangleComparator. The method compares two rectangles. The method should return: A positive integer if the area of the first r

Write a quality and complexity analysis report, Write a quality and complex...

Write a quality and complexity analysis report, JAVA Programming

Explain the essential api concepts associated with j2me, Question : (a)...

Question : (a) Class file verification in CLDC is different from class file verification in J2SE. Explain and discuss how and why it is different, illustrating your answer

How can you define a readable program, How can you define a readable progra...

How can you define a readable program? A program that is easy to read & understand also easy to maintain and enhance. Readability is the ease in that text can be read and under

Small projects, i am doing java and want projects with solutions to practic...

i am doing java and want projects with solutions to practice more and more

Write a program calculates the resistance of group resistors, The formula f...

The formula for resistors linked in parallel is a little more complex. Given two resistors along with resistances R1 and R2 linked in parallel the equivalent resistance is given th

Build KNN Classifier in Java, Can you help? this assignment I will need to ...

Can you help? this assignment I will need to build a very straightforward and fully functional machine learning classifier with the K-Nearest Neighbor (KNN) algorithm. The KNN mode

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd