Servlet technology is used to create a web application resides at server side and generates a dynamic web page. Servlet technology is robust and scalable because of java language. However, there were many disadvantages to this technology. We have discussed these disadvantages below. A web application is an application accessible from the web. CGI technology enables the web server to call an external program and pass HTTP request information to the external program to process the request.
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java - Reading and writing from text file in servlet - Stack Overflow
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Servlet Hello World
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Today we all are aware of the need of creating dynamic web pages i. If you like coding in Java, then you will be happy to know that using Java there also exists a way to generate dynamic web pages and that way is Java Servlet. Servlets are the Java programs that runs on the Java-enabled web server or application server. They are used to handle the request obtained from the web server, process the request, produce the response, then send response back to the web server.