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I read many articles to understand Java servlet but I did not succeed.
Can you please give brief introduction of Java servlets (in easy language). What is a servlet? What are the advantages?
I can't understand the difference between server-side programming languages (PHP, ASP) and servlets.
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A servlet is a Java programming language class that is used to extend the capabilities of servers that host applications accessed by means of a request-response programming model. Although servlets can respond to any type of request, they are commonly used to extend the applications hosted by web servers.
The Servlet and JSP are incredibly simple ways to handle an incoming request, and to develop HTML that gets displayed inside a client's web browser, respectively. All the existing Java-based web frameworks simply build on top of the Servlet and JSP API.
Java™ servlets and Java server pages (JSPs) are Java programs that run on a Java application server and extend the capabilities of the Web server. Java servlets are Java classes that are designed to respond to HTTP requests in the context of a Web application.
Apache Tomcat is a long-lived, open source Java servlet container that implements core Java enterprise (now Jakarta EE) specifications, including the Jakarta Servlet, Jakarta Server Pages, and Jakarta WebSocket specs.
A servlet is simply a class which responds to a particular type of network request - most commonly an HTTP request. Basically servlets are usually used to implement web applications - but there are also various frameworks which operate on top of servlets (e.g. Struts) to give a higher-level abstraction than the "here's an HTTP request, write to this HTTP response" level which servlets provide.
Servlets run in a servlet container which handles the networking side (e.g. parsing an HTTP request, connection handling etc). One of the best-known open source servlet containers is Tomcat.
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