Try adding these lines to the start of main():
System.out.println("java.home: " + System.getProperty("java.home"));
System.out.println("JAVA_HOME: " + System.getenv("JAVA_HOME"));
System.out.println("PATH: " + System.getenv("JAVA_HOME"));
Ant will print out the error message if it can't find the class
com.sun.tools.javac.Main
via the classloader, so I would suggest you convince yourself that
your program can find
that class. Usually this will be true if you are running the program
with jdk/bin/java and not jdk/jre/bin/java,
regardless of JAVA_HOME and java.home.
Try modifying the ant launch script and hardcode a path to jdk/bin/
java - if you no longer get
a warning message then you know you are on the right track.
On 16 May 2009, at 15:11, David Nemer wrote:
Hello Martin,
The vars are all set up right. And it is "not" an ANT problem. The
problem
is that the "java.home" points to JAVA_HOME/jre , if I ever call
this method
"System.getProperty("java.home");" it will return to me JAVA_HOME/jre
(/opt/jdk1.6.0_06/jre in my case). And all we want is the pure
JAVA_HOME (no
/jre).
So I found this interesting post that explains better:
"println ( System.properties.'java.home' );
prints the path to the JRE for me as well. This is of course not
surprising
and exactly as it should be since this is the path to the JVM, not
to the
JDK.
I think it is clear that the Ant error message is completely
misleading. I
have added a bug report in the Ant Bugzilla (43794).
I think we have to find out what Ant does internally to allow the
javac task
to run, so that we know how Ant gets round this problem."
--
David Nemer
Sent from Kaiserslautern, RP, Germany
On Sat, May 16, 2009 at 3:50 PM, Martin Gainty <mgai...@hotmail.com>
wrote:
Herr Nemer
you would'nt be able to run ANT if your JAVA environment vars was
fouled up
JRE_HOME points to JRE folder (which contains only java.exe)
JDK_HOME points to location of BASE FOLDER of javac.exe
PATH=%JDK_HOME%/bin
Mit Freundliche Gruben
Martin
GMT+5
das Amerika
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Date: Sat, 16 May 2009 15:36:19 +0200
Subject: Re: Java in JDK but ANT can't find it!
From: davidne...@gmail.com
To: user@ant.apache.org
Hello Supareno,
I running it using the command line (running in a linux-server ).
And ant
is
also running properly.
Cheers,
--
David Nemer
On Sat, May 16, 2009 at 12:51 PM, supareno <reno.rkc...@free.fr>
wrote:
David ,
are you using an IDE to run this simple code or are you using the
command
line?
is the 'ant' command line tool is working properly in a terminal?
supareno
Hey all,
Well, I did some testing, and I tried to run this simples Java
code:
public static void main(String args[]){
String JAVA_HOME = System.getProperty("java.home");
System.out.println(JAVA_HOME);
}
And it prints out: /opt/jdk1.6.0_06/jre
So, as Ashley said before, it is not an Ant's problem, it is an
environment
or Java problem.
But, I checked, both, bash_profile and bashrc, and they all
point to
/opt/jdk1.6.0_06, no JRE at all. So I was wondering where else
could I
look
at so I can find where this JRE is set.
Does anyone know where the method System.getProperty goes to get
the
java.home? Like a file or something like that??
Cheers
PS: I also used that code to call and in my java code.
--
David Nemer
Sent from Kaiserslautern, RP, Germany
On Thu, May 14, 2009 at 5:36 PM, Ashley Williams <ashpub...@mac.com
>
wrote:
I did a lot of copying and pasting from this website to get my
own
code
up
and running:
http://www.ibm.com/developerworks/websphere/library/techarticles/0502_gawor/0502_gawor.html
However I still believe the problem is with your environment
rather
than
your code.
Try editing the ant batch file or shell script in order to
print out
JAVA_HOME and PATH and
just at the point where it runs
org.apache.tools.ant.launch.Launcher.
Then print out all environment variables at the top of your
build.xml
file.
And print out
java.home at the start of your java application.
If you are forking the compiler, could it not be inheriting the
environment
correctly?
On 14 May 2009, at 16:22, Cole, Derek E wrote:
Ashley, can you post a snippet of how you set up the project you
launch
programmatically from java?
What does your build file that you are running from java
contain in
it?
-----Original Message-----
From: Ashley Williams [mailto:ashpub...@mac.com]
Sent: Thursday, May 14, 2009 10:54 AM
To: Ant Users List
Subject: Re: Java in JDK but ANT can't find it!
Check your PATH to make sure you are launching your
application from
the jdk and not the jre.
I launch programatically and I don't get these errors with the
same
version of ant so it does
sound as if the problem lies outside of ant.
On 14 May 2009, at 15:46, David Nemer wrote:
This is what I'm trying to tell you! My JAVA_HOME it is set as
/opt/jdk1.6.0_06 I've triple checked it on my bash file! I also
check with
echo $JAVA_HOME and which java, they all tell the right path,
but
not ANT!
This is why I don't understand where does ant get this /jre !!
--
David Nemer
Sent from Kaiserslautern, RP, Germany
On Thu, May 14, 2009 at 4:42 PM, Ashley Williams <
ashpub...@mac.com>
wrote:
In your description you say that JAVA_HOME=/opt/jdk1.6.0_06/
jre
Seriously, try JAVA_HOME= /opt/jdk1.6.0_06 instead
On 14 May 2009, at 15:28, Cole, Derek E wrote:
When I had this problem, I KNOW that JAVA_HOME was set
correctly.
I
still ran into the problem. The OP here also said JAVA_HOME
was
set
correctly. There is some missing step here that prevents
the ant
Project
instance from knowing which Java to use.
-----Original Message-----
From: Ashley Williams [mailto:ashpub...@mac.com]
Sent: Thursday, May 14, 2009 9:56 AM
To: Ant Users List
Subject: Re: Java in JDK but ANT can't find it!
It looks like you are pointing to the jre not the jdk.
Try repointing the JAVA_HOME environment variable to the jdk
directory
instead,
On 14 May 2009, at 13:15, David Nemer wrote:
Hello Everyone,
I am running ANT programmatically in JAVA. So, my task is to
build the
BUILD.XML.
I'm able to do so, but it throws an exception saying:
/scratch2/nemer/test/xfire/build.xml:5: The following error
occurred
while
executing this line:
/scratch2/nemer/test/xfire/build-common.xml:81: Unable to
find a
javac
compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK.
It is currently set to "/opt/jdk1.6.0_06/jre"
But in the end it says: BUILD SUCCESSFUL (but it still
throws
that
exception).
I already set all of my environment variables to
/opt/jdk1.6.0_06/
(JAVA_HOME and also in PATH), which is a JDK! And even on
the
error
message
it says that the java is set to /opt/jdk1.6.0_06/jre
(which is a
JDK, I
don't know where it gets the jre from).
So, does any one know how can I solve this problem? Is
there a
configuration
file in ANT that we need to set up! I'm stuck there!!
I'm running the ant 1.7.1.
Cheers,
--
David Nemer
Sent from Saarbrucken, SL, Germany
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