On 09/14/2009 01:10 AM, sj david wrote:
Hi Fedora,
Hello David
...
I Setup the Eclipse IDE & Tomcat server on Fedora 9. I am facing
following problems while enabling graphical APIs on the application:
*1*. I have a running java application with JCharts on Windows which
works fine with Eclipse & Tomcat server. But when I am trying to deploy
the same on Fedora 9. JCharts are not able to render & I am getting the
following error:
: "/*Gtk Warning: cannot open display*/".
First, it is time to move from Fedora 9, it is not supported anymore :-)
Now the problem could be that the Tomcat server is running under a user
with no access to the display and that is the correct way to install it.
JFreeChart uses a lot Java2D, that until Java 1.4 required to have
access to a display (in Linux a X Server), but Sun introduced a in 1.4
the System property java.awt.headless that make it possible to use
Java2D and many other graphic related classes/methods.
You need to add the argument -Djava.awt.headless=true to the script that
start Tomcat, when calling the java executable
If I disable the call to JCharts APIs, My application works fine. Can
you please help me here.
*2*. To overcome this issue, I move to another Chart API: JFreeCharts. I
added the jar in the classpath & also added its java files in the
project, but whenever I am running my application from Eclipse with
Tomcat, Tomcat is not able to load this JFreeChart class files, saying :
*java.lang.NoClassDefFoundError*
. Please help me here.
Thanks
David.
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