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The servlet generated from the JSP file implements javax.servlet.jsp.HttpJspPage interface, which is responsible for its lifecycle. This interface is very similar to the servlet lifecycle, but with JSP-specific features. The lifecycle methods of the HttpJspPage interface correspond with the Servlet interface methods: HttpJspPage.jspInit(..) for jsp servlet initialization, HttpJspPage.jspService(..) for request servicing, and HttpJspPage.jspDestroy(..) for jsp servlet destruction.

On all subsequent requests, the server checks to see whether the original .jsp source file has changed. If...

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Cover of Apache Tomcat 7

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JSP intro