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EJBs are distributed elements, which need the RMI framework for object distribution. An EJB application server gives more services like object pooling, transaction management, database connection-pooling etc, which RMI does not produce. These extra services that are provided by the EJB server simplify the programming effort at the cost of performance overhead compared to plain RMI. So if performance is important than pure RMI may be a good solution.
The decision to go for EJB or RMI or Sockets should be based on needs such as maintainability, ease of coding, performance, extensibility, scalability, availability of application servers, business needs etc.
What is synchronization and why is it important? With respect to multithreading, synchronization is the potential to control the access of multiple threads to shared resources.
1. final - it is a constant declaration. 2. finally - handles exception. The finally block is optional and gives a mechanism to clean up regardless of what occurs within
EJB elements operate inside a container environment and rely heavily on the container to give security. The four key services needed for the security are: 1. Identification :
Using Java, write the class Time which consists of the following: (a) three private integer data members (hours, minutes and seconds). (b) a constructor to initialise the dat
Describe about Applet Security? The possibility of surfing the Net, wandering across a random page, playing an applet and catching a virus is a fear in which has scared several
What are the conditions for exiting the while loop?
It terminates execution of the block of statements in while or for loop & continues execution of the loop along with the next iteration. On the contrary to the break statement, con
Write a short note on image preloading process? The primary use of image preloading procedure is to download the image within the cache before it is actually required to displa
palindrome is starting that reads both the ends.using string covert into character
JavaScript supports the normal control structures: The conditionals if, if...else, & switch; The iterations for, while, do...while, break, & continue;
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