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From David Kerber <>
Subject Re: Tomcat 7: Why is JDK needed ?
Date Mon, 01 Aug 2011 23:57:16 GMT
On 8/1/2011 7:18 PM, Bobi St wrote:
> --- Caldarale, Charles R<>  schrieb am Mo, 1.8.2011:
>> it is obsolete in a way, because setting JAVA_HOME to JRE 
>> gives the message : "NB: JAVA_HOME should point to a JDK
>> not a JRE".
> The message is correct as stated; when JAVA_HOME is used, it *must* point to a JDK. 
If you want a specific JRE, you must set JRE_HOME, not JAVA_HOME.  If 
> ::: Well, if JDK is not needed anymore, why bother setting JAVA_HOME, why is it mentioned
at all ?
>> Why not only to set JRE_HOME ?!?
> Sorry, I can't parse that question.
> ::: I meant, if JDK is not needed anymore, why at all mentioning JAVA_HOME ?
>> the messaging seems at least to me a little confusing.
> Please explain why.  As far as I can see, you set JAVA_HOME to a JRE, which is invalid;
once you've done that, nothing useful can result.
> ::: Its all about JDK, if JDK is not needed anymore, why at all mentioning JAVA_HOME
to JDK ?
My guess would be backwards compatibility.  Also, there may be a reason 
that somebody might want to use a JDK instead of a JRE.

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