Can the JIT be turned off in JavaSE 5?

[Basler Mark]

Hi Guys,



I am having trouble finding whether the JIT is always on in JavaSE 5 or
that it can still be turned off by using "-Djava.compiler='NONE'".



I want the JIT on, but I just found a script that is being used in a
legacy system that has this setting and I want to see if it matters
anymore...



I did find an excerpt in "Java in a Nutshell" that states:

"This environment variable and property are no longer used as of Java
1.4, which uses the HotSpot VM, which includes efficient JIT
technology."





I have been looking around on the java.sun.com site and found references to -Djava.compiler in the following places...



http://java.sun.com/javase/6/docs/technotes/guides/jni/spec/invocation.html

http://java.sun.com/javase/6/webnotes/6u4.html

http://java.sun.com/j2se/1.5.0/docs/guide/plugin/developer_guide/debugger.html

http://java.sun.com/j2se/1.5.0/docs/guide/deployment/deployment-guide/jcp.html

http://java.sun.com/developer/onlineTraining/Programming/JDCBook/perf2.html


So I am really not 100% sure, either way...



Can someone who definitively knows let me know...

I also posted this on the Java forum at http://forums.sun.com/thread.jspa?threadID=5382536&messageID=10689611#10689611




Thanks for your help - Mark :-)

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