Thank you very much for the information.
Just want to dig more. I am using Java 6.0 & Tomcat 5.
- For JChart: How I can give access to display (X Server) to Tomcat
- REgd JFreeChart: In which file in need to add
-Djava.awt.headless=true ? I already did that in tomcat5.conf. And also I
setup the same in the code before calling the JFreeChart API
Appreciate your help !!!!
On Sun, Sep 13, 2009 at 11:03 PM, Robert Marcano
On 09/14/2009 01:10 AM, sj david wrote:
> Hi Fedora,
> 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 :
> . Please help me here.
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