Erro in the execution of the program with JDK 1.3.1

[Breno Cardoso Perucchi <br...@omegatec.net>]

Hello 

Can anybody tell me the one what I should do on that below? 
Those are the message of forum http://forum.java.sun.com - Java Programming - Java Virtual Machine

thanks


            Erro in the execution of the program with JDK 1.3.1
            Author: Breno_Perucchi  Oct 14, 2003 1:27 AM      
     
      Hello guys
      I installed the port JDK 1.3.1 in the system operation Freebsd . But I am having a problem of execution in my Java program. My program try to create bank ticket with bar code but it doesn't get to create the bar code 

      I already researched in the internet the followings error but up to now I didn't have any answer to solve my problem. I need the help. Below this the log of the java 

      Below the are log of the JDK 1.3.1
      003-10-08 17:50:56 StandardWrapperValve[barbecue]: Servlet.service() for servlet barbecue threw exception
      javax.servlet.ServletException: Servlet execution threw an exception
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)

      ----- Root Cause -----
      java.lang.InternalError: Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.
      at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
      at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:54)

      ----- Root Cause -----
      java.lang.NoClassDefFoundError: sun/awt/motif/MToolkit
      at java.lang.Class.forName0(Native Method)
      at java.lang.Class.forName(Class.java:115)  



                     Re: Erro in the execution of the program with JDK 1.3.1 
                  Author: andih 
                  In Reply To: Erro in the execution of the program with JDK 1.3.1  Oct 14, 2003 2:33 AM   

                  Reply 1 of 3   
           
     
            You either have no X server running or not the permissions to connect to the server. The message appears whenever at least one servlet uses direct or indirect SWING ( AWT) classes. 

            The second root may be followup error of the fact that it's not possible to connect to the X server. 
            There occured an error during initialzation of the MToolkit which the Classloder may report as a ClassNotFoundError. 

            Ensure that there exists a X Server and you have the permissions to connect to the X server. Set the DISPLAY environment variable.  
     



                  Re: Erro in the execution of the program with JDK 1.3.1 
                  Author: Breno_Perucchi 
                  In Reply To: Re: Erro in the execution of the program with JDK 1.3.1  Oct 14, 2003 11:28 AM   

                  Reply 2 of 3   
           
     
            I don't have X11 server installed 

            Do I have to install X11? Even if my program is executed in the Apache webserver ?
            This error with awt/motif/MToolkit can be originated by mistake above ?

            Thanks for your help  
     



                    Re: Erro in the execution of the program with JDK 1.3.1 
                  Author: SebastianM 
                  In Reply To: Re: Erro in the execution of the program with JDK 1.3.1  Oct 14, 2003 12:39 PM   

                  Reply 3 of 3   
           
     
            try passing the following switch with the JRE:

            -Djava.awt.headless=true

            as in

            java -Djava.awt.headless=true package.MyMainProgram
           
     

                    Re: Erro in the execution of the program with JDK 1.3.1 
                  Author: dpz 
                  In Reply To: Re: Erro in the execution of the program with JDK 1.3.1  Oct 15, 2003 11:02 AM   

                  Reply 4 of 4   
           
     
            If there is an X-server some where nearby, you can point your DISPLAY variable at it. Since I presume you aren't actually displaying anything the humnan sitting at that X-Server wont notice anything. You may need to do an 'xhost +<...>' on the X-Server in order to get access.

            Since you're running 1.3 the -Djava.awt.headless=true option isn't available.

            You might also look at Xvfb which is a headless X-Server for just such emergencies