The first time a page is requested, it undergoes several conversions: from JSP to Java code to HTML. The first transformation from JSP to Java code causes a slight delay in performance that is easily avoided by pre-compiling your JSPs with the Java compiler.
You can pre-compile individual JSPs at application startup by specifying them in your web application deployment descriptor. Here is an example of what you’d add for a page called MyPage.jsp to web.xml in enclosing <web-app> tags:
<servlet> <servlet-name>MyPage.jsp</servlet-name> <jsp-file>/path/to/jsp/MyPage.jsp</jsp-file> <load-on-startup>1</load-on-startup> </servlet>
An explanation of each tag is as follows:
<servlet-name>identifies the servlet to be compiled<jsp-file>identifies the path to the servlet<load-on-startup>identifies the order this servlet should be compiled
