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Xml - Interview Questions and Answers for 'Tcs' - 2 question(s) found - Order By Newest

  Q1. Difference between SAX and DOM Parser ?Xml
Ans. A DOM (Document Object Model) parser creates a tree structure in memory from an input document whereas A SAX (Simple API for XML) parser does not create any internal structure.

A SAX parser serves the client application always only with pieces of the document at any given time whereas A DOM parser always serves the client application with the entire document no matter how much is actually needed by the client.

A SAX parser, however, is much more space efficient in case of a big input document whereas DOM parser is rich in functionality.

Use a DOM Parser if you need to refer to different document areas before giving back the information. Use SAX is you just need unrelated nuclear information from different areas.

Xerces, Crimson are SAX Parsers whereas XercesDOM, SunDOM, OracleDOM are DOM parsers.

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Related Questions

  What is marshalling ?
  What is unmarshalling ?
 Given a String with some Code, Write a Parser to have proper indentation.


Frequently asked. Among first few questions in the J2EE segment of interview.
  Q2. What is deployment descriptor ?

or

What is the use of deployment descriptor ?
Java EE
Ans. Deployment Descriptor which is usually web.xml is used to specify the classes, resources and configuration of the application and how the web server uses them to serve web requests.This file is usually added to WEB-INF folder and contains following

* Servlet entries and url mapping
* Plugins
* Some info regarding authentication / filters
* Landing Page
* Event Handlers

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   Like         Discuss         Correct / Improve     web.xml   servlets  deployment descriptor     Asked in 15 Companies      basic        frequent

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Related Questions

 Which of the following file is called deployment descriptor ?

a. application.xml
b. project.xml
c. web.xml
d. build.xml
  Can we have multiple servlets in a web application and How can we do that ?
 Is there any relationship between Web.xml and Spring.xml ?
 What is the difference between filter and filter-mappings xml tag within deployment descriptor ?


 Q3. Which of the following is not the benefit of Lazy Initialization in Hibernate ?Hibernate
a. Laod When required provides better performance
b. Object stays lighter
c. Less number of Database calls
d. Less load on Database

Ans.c. Less number of Database calls


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