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..
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init(FilterConfig fg)
DoFilter(SReq req ,Sres res,FilterChain fc)
destroy()

What do you mean by singlethreadmodel interface?

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2 Answers   HCL,

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