text: need of containers(eg servlet container). different types of containers and their needs.? this is related to servlet containers like tomcat. i wanted to know what more about containers. are they needed because of the servlet life cycle ? wanted to know more about servlet life cycle. what are the other types of containers considering such types of life cycle. how do they work. servlet container can b termed as servlet engine too,a central component of web server........this engine compiles the servelets. yes they are needed b/coz of the life cycle of the servelet containers. for more information try a search engine.