Servlets Interview Questions

Servlets Interview questions with answers

Servlets Interview - August 02, 2008, 17:00 pm by Amit Satpute What is Servlets and explain the advantages of Servlet life cycle? Answer - Servlets are the programs that run under web server environment.... Explain life cycle of Servlet. Answer - Servlets life cycle involve three important methods.... What are different Authentication options available in Servlets. Answer - There are four ways of Authentication options available in servlets...... Explain why HttpServlet is declared abstract. Answer - The Constructor HttpServlet() does nothing because this is an abstract class......... Is possible to have a constructor for a servlet? Answer - Yes, it is possible to have a constructor for a servlet....... What is the difference between an Applet and a Servlet? Answer - Applets are applications designed to be transmitted over the network...... Define HTTP Tunneling? Answer - In some organizations, the intranet is blocked by a firewall to the internet.......... List out the difference between ServletConfig and ServletContext? Answer - Both are interfaces in the package javax.servlet............... What is the difference between doGet() and doPost()? Answer - doGet() and doPost() are HTTP requests handled by servlet classes.......... What is the difference between using getSession(true) and getSession(false) methods? Answer - getSession(true) will check whether a session already exists for the user.......... List out the difference between a JavaBean from a Servlet? Answer - Servlets are Java based analog to CGI programs, implemented by means of .......... Explain how servlets differ from RMI. Explain the advantages and disadvantages of each technology. Answer - RMI (Remote Method Invocation) are a means of client server communication........ Define servlet mapping. Answer - Servlet mapping controls how you access a servlet. It is recommended that you don’t use......... Explain javax.servlet.http package.