Answer / srikanth

filters are used to preprocessing and postprocessing of
tasks like login,authorization,data compression,data
encoding etc

for this u need to override intit(),dofilter(),and destroy()

Answer / suresh royal

Filter is a special web resource program that is capable of
trapping the request and taking the response of other web
resource programs.

Filter is a interface .

A servlet program which is implemented javax.servlet.Filter
interface is called "Servlet Filter"

Filter having three methods..
==================================
init(FilterConfig fg)
DoFilter(SReq req ,Sres res,FilterChain fc)
destroy()

What is use of parseQueryString ?

1 Answers  

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How servlets can be automatically reloaded?

3 Answers  

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How to handle the debug errors in servlets?

2 Answers  

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What is the importance of init() method in Servlet ?

0 Answers   BirlaSoft,

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What is servlet container?

0 Answers  

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Name the different ways of session tracking.

0 Answers  

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When the methods init() and Distroy() will be called?

2 Answers  

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Is dispatcher servlet a singleton?

0 Answers  

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hi actully i hav form columns with origin and destination names .as like as i need to create one more column with name amount. my requirement is when i select origin and destination columns automatically i need to get amount from database.how can i. please tel me with relative code

0 Answers   CTS,

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can servlet have instance variables?

8 Answers   Syscon, Wipro,

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What are the different ways we can maintain state between requests?

0 Answers  

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Are Servlets by default thread safe or not? thanks in advance regards Sudhakar

3 Answers  

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