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A comment on Eclipse OpenJ9 – Open-source JVM. Parent comment

Re:Eclipse OpenJ9 – Open-source JVM by oblio on Saturday September 16, 2017 @04:25PM (#15266557)
ECJ is in Tomcat? What for?
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Re:Eclipse OpenJ9 – Open-source JVM by emmelaich on Saturday September 16, 2017 @04:27PM (#15266569)
Compiling Java :-)

To be more precise, a compiler is required for JSP, which is a mixture of html and java that is compiled to servlets.

Theoretically you can compile them ahead of time (before deployment) but as far as I can tell no-one does.

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Re:Eclipse OpenJ9 – Open-source JVM by solarengineer on Saturday September 16, 2017 @07:37PM (#15267354)
Those who want to provide only class files and no jsp code use the JSP pre-compilation approach. The JSP folks get compiled to Java servlet byte code the same as at runtime.
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