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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.
Explain what is Local Variable ? Declaring variables (using the var keyword) inside a function forms them local. They are available only inside the function and hold no meaning
Ten pigs were all in a pen, enjoying their morning slop when a bird flew down from a nearby tree and began picking all the best bits out from the trough. This greatly perturbed the
Default port used by RMI Registry is 1099
Both synchronous and asynchronous are given by JMS.
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A JSP page is a text-based document that having two types of text: static template data, which can be expressed in any text-based format like HTML, SVG, WML, and XML, and JSP eleme
Benefits of AOP (Aspect Oriented programming) OOP can give the system level code like transaction management, logging, security etc to scatter throughout the business logic. A
I want to get some idea about how i can make a project on "Free Lancer Teaching."
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what is arrays and how do they operate
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