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What is Jasper in Tomcat server?

Jasper is Tomcat’s JSP Engine. Tomcat 5.x uses Jasper 2, which is an implementation of the Sun Microsystems’s JavaServer Pages 2.0 specification.

	Jasper parses JSP files to compile them into Java code as servlets (that can be handled by Catalina).

	At runtime, Jasper is able to automatically detect JSP file changes and recompile them.