what are design patterns?

Answer Posted / srinivas.parigi

design patterns are a good solutions for reoccuring
problems in the development of appliation, and these are
designed by senior software developers by using very good
frameworks.
using design pattens a junior can spend less time to solve
the problems insted of spending lot of time for reoccuring
problems in the development of applications.
Ex :
single thread model,DataAccessObject,DataAccesLogic,
mvc-II(most popular today using in all development of
applications)
ejb design patterns(EDP) : SLDP(service locator design
pattern),Business deligate desing patt,Home cash
DP,DataTransfer Object (DTO)SessionFecade(SF),etc

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