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Jetty is a project at the Eclipse Foundation.
Homepage:http://www.eclipse.org/jetty
Downloads: http://download.eclipse.org/jetty/
Documentation:http://www.eclipse.org/jetty/documentation/current/
About:http://www.eclipse.org/jetty/about.php
Jetty Powered:http://www.eclipse.org/jetty/powered/
Contact the core Jetty developers at www.webtide.com
private support for your internal/customer projects ... custom extensions and distributions ... versioned snapshots for indefinite support ... scalability guidance for your apps and Ajax/Comet projects ... development services from 1 day to full product delivery
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JSP 2.0 vs JSP 2.1

Jetty does not implement JSP directly. Instead it uses a servlet to provide this functionality required by the servle specification. As part of Java EE 5 (the next version of J2EE), the companion of 2.5 servlet specification is the 2.1 JSP specification.

While all Java EE 5 technologies formally depend on java 5 (jre 1.5), this is a soft dependency for servlets and Jetty 6 will compile and run on jre 1.4. However, for JSP the dependency of java 5 is a hard dependency and jre 1.5 must be used to run the server with JSP 2.1

Thus Jetty 6 supports both JSP 2.0 and JSP 2.1 so that jre 1.4 users may be supported.

JSP 2.1 (Jesper)

JSP 2.0 (Jasper)

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Contact the core Jetty developers at www.webtide.com
private support for your internal/customer projects ... custom extensions and distributions ... versioned snapshots for indefinite support ... scalability guidance for your apps and Ajax/Comet projects ... development services from 1 day to full product delivery