[Sussex] vvv confused with java - jre, sdk and jvm

[Clive Chapman]

----- Original Message ----- 
From: "John D." <john at johnsemail.eclipse.co.uk>
To: "LUG email list for the Sussex Counties" <sussex at mailman.lug.org.uk>
Sent: Monday, July 25, 2005 12:40 AM
Subject: Re: [Sussex] vvv confused with java - jre, sdk and jvm


> Richie Jarvis wrote:
>> Steve Dobson wrote:
>>
>>> Richie, John
>>>
>>> On Sun, Jul 24, 2005 at 06:33:30PM +0100, Richie Jarvis wrote:
>>>
>>>> The normal problem with java is that by default, Linux uses GCJ, which 
>>>> is compiled Java, and will not run most java apps out of the box.  The 
>>>> way to tell is to type at the prompt of the user you are trying to run 
>>>> the application under:
>>>>
>>>> java -version
>>>>
>>>> If it comes back with something referencing GCJ, then you know you are 
>>>> having this problem.  The trick to get it to use Sun's JRE (Java 
>>>> Runtime Environment) is to add $JAVA_HOME before everything else in the 
>>>> path:
>>>>
>>>> export PATH=$JAVA_HOME:$PATH
>>>>
>>>
>>> John said earlier that he had set JAVA_HOME to /usr/lib/jvm/java
>>> If the Java system John install is the same as the JDK I install then
>>> you need to add set PATH thus:
>>>   export PATH=$JAVA_HOME/bin:$PATH
>>>
>>>
>>>
>> Ah yes - oops - forgot that bit....
>
> Which creates more confusion on my part. Below is the output of what I 
> want to do, I'll comment in between some of the bits. So..........
>
>
> john at johnspc:~> ./lps-3.0.2/Server/tomcat-5.0.24/bin/startup.sh
> Using CATALINA_BASE:   /home/john/lps-3.0.2/Server/tomcat-5.0.24
> Using CATALINA_HOME:   /home/john/lps-3.0.2/Server/tomcat-5.0.24
> Using CATALINA_TMPDIR: /home/john/lps-3.0.2/Server/tomcat-5.0.24/temp
> Using JAVA_HOME:       /usr/lib/jvm/java
> <!----- above is the command that I need to issue, to start the tomcat 
> server, which as I understand it, is the server interface for the 
> Openlaszlo app, which apparently needs java SDK
> So using the command that Richie said to see what version I get gives 
> me-----!>
>
> john at johnspc:~> java -version
> java version "1.5.0_03"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_03-b07)
> Java HotSpot(TM) Client VM (build 1.5.0_03-b07, mixed mode, sharing)
> <!-----As you can see, my efforts of (apparently) deleting the references 
> to various versions of java that either I installed or might have 
> installed as default, and then re-installed the 1.5.0_03 seem to be seen 
> by the user account - well I think thats what it's telling me anyway. So 
> then-----!>
>
> john at johnspc:~> export PATH=$JAVA_HOME/bin:$PATH
> john at johnspc:~> ./lps-3.0.2/Server/tomcat-5.0.24/bin/startup.sh
> Using CATALINA_BASE:   /home/john/lps-3.0.2/Server/tomcat-5.0.24
> Using CATALINA_HOME:   /home/john/lps-3.0.2/Server/tomcat-5.0.24
> Using CATALINA_TMPDIR: /home/john/lps-3.0.2/Server/tomcat-5.0.24/temp
> Using JAVA_HOME:       /usr/lib/jvm/java
> <!-----And no I didn't see the typo, well I think it's a typo i.e. the 
> missing space before the final "$PATH" part of the command, so after 
> re-reading the post, I did this and got the reply as below-----!>
>
> john at johnspc:~> export PATH=$JAVA_HOME/bin: $PATH
> bash: export: 
> `/usr/lib/jvm/java/bin:/usr/lib/jvm/java:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin': 
> not a valid identifier
> john at johnspc:~>
> <!-----Which still leaves me completely stumped, because if I look at the 
> "echo $JAVA_HOME" it's still telling me this-----!>
>
> john at johnspc:~> echo $JAVA_HOME
> /usr/lib/jvm/java
> john at johnspc:~>
>
>
>
>
> Regards
>
> John D.
>
> p.s. Oh and I'll see if I can get the install instructions from the 
> Openlaszlo site so that you can see what the references to the Tomcat 
> server are all about (cos I haven't got much of an idea).
>
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