Hi Robert, 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 server. - 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 (System.properties("java.awt.headless","true")) Appreciate your help !!!! Thanks again, David <div class="gmail_quote">On Sun, Sep 13, 2009 at 11:03 PM, Robert Marcano <<a href="mailto:robert@marcanoonline.com">robert@marcanoonline.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">On 09/14/2009 01:10 AM, sj david wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hi Fedora, </blockquote> Hello David ... <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im"> 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: </div> : "/*Gtk Warning: cannot open display*/". </blockquote> 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 <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im"> 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. </div> ------------------------------------------------------------------------ -- fedora-devel-java-list mailing list <a href="mailto:fedora-devel-java-list@redhat.com" target="_blank">fedora-devel-java-list@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/fedora-devel-java-list" target="_blank">https://www.redhat.com/mailman/listinfo/fedora-devel-java-list</a> </blockquote> -- fedora-devel-java-list mailing list <a href="mailto:fedora-devel-java-list@redhat.com" target="_blank">fedora-devel-java-list@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/fedora-devel-java-list" target="_blank">https://www.redhat.com/mailman/listinfo/fedora-devel-java-list</a> </blockquote></div>