What is Servlet Filter And What does it work?
- 1 Answers
- 10442 Views
- TCS, I also Faced
- E-Mail Answers
Answer / surajkumar.java
Filters are powerful tools of Servlet platform. These are
just like a servlet which plugs into the request handling
process and executes in addition to the normal page
processing. Filters manipulate both request and response in
web application. Filters can be applied to any resources
like HTML, graphics, a JSP page, servlet etc, served by a
servlet engine. These are commonly used for authentication,
data format conversion and page redirect to other page and
catching etc.
A java class which implements javax.servlet.Filter is
configured as filter in web.xml file. For each request in
web application, the servlet container decides which filters
to apply, and adds those filters to a chain in the same
order they appear in web.xml. As a filter is just like a
servlet, it has its life cycle (init(), doFilter() and
destroy() methods).
| Is This Answer Correct ? | 22 Yes | 3 No |
what is the life cycle of jsp?
How can a dead thread be restarted?
What is a session? Can you share a session object between different theads?
When is the best time to validate input?
Which are the different segments of memory?
what is JTS?
What is prototype?
how can we load a file of a user in the database table?
life cycle of an applet?
what is meant by JRMP?
Explain the advantages and disadvantages of detached objects.
What is the relationship between local interfaces and container-managed relationships?
Core Java 
