Thanks to all for the replies.
So we dont need JDK_HOME, and the message
>>>>> Neither the JAVA_HOME nor the JRE_HOME environment variable is defined
>>>>> At least one of these environment variable is needed to run this program
is obsolete.
Best regards,
From: Bobi St
Date: Thu, 21 Jul 2011 19:58:53
why is Why is JDK needed also for Tomcat 7 ? Does it use a compiler, or why not
simply using for example jre6 ?!?
I have to install always extra JDK because of it ...
> Von: Justin Randall
> 21. Juli, 2011 21:01 Uhr
> It uses the Java compiler for activities such as compiling JSPs into
Servlets into Java class files.
> All versions of Tomcat require the JDK.
>> I see. This makes sense.
>> P.s. On the other hand the ---or--- in the error message is
misleading: neither JDK_HOME ---nor--- JRE_HOME is set...
>>> Von: Konstantin Kolinko
>>> 21. Juli, 2011 21:09 Uhr
>>> Wrong. All currently supported versions (5.5, 6.0,
7.0)
>>> do not use JDK compiler by default even if it is
available.
>>> See documentation for details.
>>> All of them can run with JRE.
>>> It is good to have JDK around because of additional
utilities like jvisualvm etc.
>>>> Bobi St
>>>> 22. Juli, 2011 13:15 Uhr
>>>> So, I'm talking about Tomcat 7. According
to some description, it >>>> doesn't need JDK anymore.
For this reason under Windows (7) I >>>> didn't
set it at the beginning (neither did I install it), so the
>>>> error came: no JDK nor JRE was set (although JRE was set). I tried
>>>> to set JDK_HOME to jre6 as well, but the same
error message.
>>>> Only after installing (the latest) JDK,
and setting JDK_HOME >>>> towards it, I could
start Tomcat with the startup.bat
>>>>> chris derham
>>>>> Freitag, 22. Juli, 2011 14:06 Uhr
>>>>> Windows 7
>>>>> Tomcat 7.0.19
>>>>> java -version
>>>>> java version "1.6.0_25"
>>>>> Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
>>>>> Java HotSpot(TM) 64-Bit Server VM (build 20.0-b11, mixed mode)
>>>>> Open command prompt, navigate to <catalina_home>\bin. If JAVA_HOME is not
>>>>> set, tomcat complains no JAVA_HOME. If set to a JRE, complains should
>>>>> point
>>>>> to JDK. Output shown below
>>>>> D:\apps\tomcat\apache-tomcat-7.0.19\bin>set JAVA_HOME=
>>>>> D:\apps\tomcat\apache-tomcat-7.0.19\bin>catalina.bat run
>>>>> Neither the JAVA_HOME nor the JRE_HOME environment variable is defined
>>>>> At least one of these environment variable is needed to run this program
>>>>> D:\apps\tomcat\apache-tomcat-7.0.19\bin>set JAVA_HOME=C:\Program
>>>>> Files\Java\jre6
>>>>> D:\apps\tomcat\apache-tomcat-7.0.19\bin>catalina.bat run
>>>>> The JAVA_HOME environment variable is not defined correctly
>>>>> This environment variable is needed to run this program
>>>>> NB: JAVA_HOME should point to a JDK not a JRE
>>>>>> Mark Thomas
>>>>>> 22. Juli, 2011 14:13 Uhr
>>>>>> That is wrong. JAVA_HOME can't point to a JRE. You should be using
>>>>>> JRE_HOME here.
>>>>>>> Ognjen Blagojevic
>>>>>>> 22. Juli, 2011 14:16 Uhr
>>>>>>> C:\apps\apache-tomcat-7.0.11\bin>set JRE_HOME=
>>>>>>> C:\apps\apache-tomcat-7.0.11\bin>set JAVA_HOME=
>>>>>>> C:\apps\apache-tomcat-7.0.11\bin>startup.bat
>>>>>>> Neither the JAVA_HOME nor the JRE_HOME environment variable is defined
>>>>>>> At least one of these environment variable is needed to run this program
>>>>>>> C:\apps\apache-tomcat-7.0.11\bin>set JRE_HOME=C:\Program
>>>>>>> Files\Java\jre6\
>>>>>>> C:\apps\apache-tomcat-7.0.11\bin>startup.bat
