Top 3 Servlet and JSP Books for Java Developers in 2025 - Best of Lot

I often receive a request from my readers and fellow Java developers about book recommendations to learn Servlet and JSP, two of the key web technology for server-side web development in Java. Unfortunately, there are not many good books to learn Servlet and JSP for Java web developers. Despite being the most popular Java Web technology, there are very few good books to learn Servlet and JSP. The one book which everybody will suggest to you is the Head First Servlet and JSP, which is indeed one of the best books but it's outdated now. It doesn't cover the latest development in Servlet API, particularly Servlet 3.0, and also not been updated for the last 7 to 8 years, but considering others, it is still an excellent book to learn Servlet and JSP.

Tomcat – java.lang.OutOfMemoryError: PermGen space Cause and Solution

Tomcat web server often suffers from java.lang.OutOfMemoryError: PermGen space whenever you deploy and un-deploy your web application a couple of times. No matter you are using tomcat6, tomcat7, or using bundled tomcat in Netbeans or Eclipse you will face this error now and then while developing web application on tomcat server. I thought about this article after writing 2 Solution of OutOfMemoryError in Java. I have touched this issue there but then I thought to write a separate tutorial for tomcat outofmemoryerror because I am getting this error too frequently.

Top 10 EJB Interview Question and Answer asked in Java J2EE Interviews

10 EJB Interview Questions and Answer from my collection of interview questions. I have been sharing interview questions on various topics like Singleton interview questions, serialization interview questions, and most recently Spring interview questions. No doubt these questions are very important for performing better in J2EE and EJB interviews but also they open a new path for learning as you may find some concepts new even while revising your knowledge in EJB. EJB interviews have always been tough because its difficult to find people who have hands-on experience on Enterprise Java Beans (EJB) and most of the guys either have worked only on sample projects and are not aware of critical functionalities like distributed transaction management, container-managed persistence, and various other services which EJB provides.