JAVA_HOME and PLUGIN_HOME

howdy, im a linux n00b, and just started a java class in school.
i am running ubuntu atm, and so far ive found most of it pretty user friendly.
im trying to run java_vm but i get an error:
"java_vm process: You need to set both JAVA_HOME and PLUGIN_HOME"
does anyone know what i need to do to fix this?
thanks

They are environment variables you need to set
set | fgrep -e PLUGIN_HOME -e JAVA_HOME

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HTTP Status 500 -
type Exception report
message
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exception
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=========================ERROR
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====================

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