JSP are built by SUN Microsystem servlet technology.
JSP tag contain Java code and its file extension is .
A D V E R T I S E M E N T
jsp. The
JSP engine parses the .jsp and create a Java servlet source file. Then it
compile the source file into a class file,this is done first time only therefore
JSP is probably slower when first time it is accessed.After
this compiled servlet is executed and is therefore return faster.
Steps for JSP request:
When the user goes to a JSP page web browser makes the request via internet.
JSP request gets sent to the Web server.
Web server recognises the .jsp file and passes the JSP file to the JSP Servlet Engine.
If the JSP file has been called the first time,the JSP file is parsed,otherwise
Servlet is instantiated.
The next step is to generate a special Servlet from the JSP file. All the HTML
required is converted to println statements.
The Servlet source code is compiled into a class.
The Servlet is instantiated,calling the init and service methods.
HTML from the Servlet output is sent via the Internet.
HTML results are displayed on the user's web browser
