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J2EE prepares use of the JNDI interface to access different resources like JMS, JDBC, EJB etc. The client finds up for these resources through the JNDI look-up. The JNDI look like is expensive because the client requires getting a network connection to the server first. So that look-up process is redundant and expensive.
To avoid this redundant and expensive process, service objects may be cached when a client process the JNDI look-up for the first time and redefine that service object from the cache for the subsequent look-ups. The service locator pattern imports this technique.
What does the " abstract " keyword mean in front of a method and a class ?
I want someone to fix some bugs in a java app Project Description: I have a small app in java, but it has some issues, the app is running. But we need to make it work more st
Describe the Superclass in Inheritance ? In this example you start through defining a more common MotorVehicle class. public class MotorVehicle { private String licensePlat
What is Constructor? A constructor is used to initialize a newly created object. It's called just after memory is allocated for the object. It can be used to initial
What is ARPANET and who developed it? ARPANET stands for Advanced Research Projects. The initial reasons were to communicate along with and share computer resources between mainl
What will be the output of this programme? Write comments where you find "//" symbol in the following code? function doSomething() { // 1 setTimeout('doSomething()',10000
How many JSP scripting elements and what are they? Ans) Three scripting language elements are there: a) declarations, b) scriptlets, c) expressions.
Describe life cycle of thread. Threads follow the single flow of control. A thread is execution in a program. The life cycles of threads are listed below: Newborn state: A
INTRODUCTION Mobile computing is everywhere. Even as an increasing population of the world are now using mobile phones, and mobile phone (or smartphone) applications, there is a
how to program
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