What are the new features in Servlet 4
Servlet is used to create a web application. It is sturdy and scalable because of java language. Before Servlet, CGI (Common Gateway Interface) scripting language used to be frequent as a server-side programming language. However, there were many risks to this technology. We have discussed these negative aspects below. We have a collection of Servlet Interview Questions and Answers. These questions and answers will help you to crack your future interviews.
There are many interfaces and training in the Servlet API such as
Servlet,
GenericServlet,
HttpServlet,
ServletRequest,
ServletResponse, etc.
Advantages of Servlet
There are many advantages of Servlet over CGI. The net container creates threads for managing the multiple requests to the Servlet. Threads have many advantages over the Processes such as they share a common memory area, lightweight, price of communication between the threads are low.
The advantages of Servlet are as Follows:
Better performance: because it creates a thread for every request, not process.
Robust: JVM manages Servlets, so we do not need to worry about the reminiscence leak, rubbish collection, etc.
Secure: due to the fact it uses java language.
Portability: due to the fact it makes use of Java language.
What’s new in Servlet 4
Servlet three pursuits to provide Web developers increased simplicity and ease of development while adhering to Web 2.0 principles. Key changes from Servlet 2.5 include the following:
Greater pluggability as an end result of Web fragments and new techniques to add servlets and filters.
Stream Prioritization
New annotations: Servlet Annotation, Servlet Filter Annotation,and Servlet Context Listener Annotation
Support for asynchronous processing
Security enhancements associated with user authentication
Request/Response multiplexing
Upgrade from HTTP 1.1
Server Push
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