What is a Java Servlet?

Java Servlets are Server-aspect Java program Modules that sySTEM and answer consumer requests and enforce the servlet Interface. It enables in enhancing Web Server Functionality with minimum overhead, renovation and support.

A servlet acts as an middleman between the Client and the server. As servlet modules run at the server, they could acquire and reply to requests made through the consumer. Request and response items of the servlet provide a handy way to handle HTTP requests and ship textual content facts lower back to the consumer.

Since a servlet is incorporated with the Java language, it additionally possesses all the Java functions which include high Portability, Platform independence, security and Java Database Connectivity.

What Does Java Servlet Mean?

There are two Java Servlet kinds: Basic and HTTP.

HTTP servlets are used as follows:

• When an HTML Form is submitted, the servlet tactics and stores the Data.
• When a consumer materials a Database Query, the results are furnished to the client through the servlet.
• In maximum cases, the server uses the Common Gateway Interface (CGI).

However, Java Servlets have many advantages over CGI, which include:

• A servlet runs inside the identical manner, removing the need to create a new technique for each request.
• The CGI Software should be reloaded for each CGI request. A servlet, but, does not require reloading and remains inside the reminiscence between requests.
• A servlet answers more than one requests simultaneously via the use of one Instance, saving Memory and easily managing persistent information.
• The servlet Engine runs in a Sandbox or restricted environment, protective the server from probably dangerous servlets.