programming concepts called as servlets, these servlets handles the requests and responses of websites. to learn this topic you need some basic knowledge in core java. we covered the following concepts . about servlets,servlet architecture,life cycle,servlet request object methods and welcome servlet program generate your knowledge in servlets doget and dopost ,export restriction,remote ip,user,url explained in good maner. validate user,session tracking,auto refresh,browser detection discussed with examples feed back form is an example to handle the servlets will give you a good knowledge file location,file move to another location , pramaeters,send files ,servlets and email program raise your knowledge.