Exception in thread "main" java.lang.InternalError: Can't connect to X11 wi

Hello Friends,
I dont know whether this would be the correct forum or not but my problem is very critical so please help me.
1. I am working on linux server where I have installed Tomcat4.x, Apache 2.0, JDK1.4.2. I have set all CLASSPATH.
Java is working fine. I am using one JCLASS component which is useful in chart creation.
3. Few days back the code regarding Frame cration was working fine but now its giving an error. I am actually running these files using cron and my requirement is also same.
4. I have tried almost all possibilities like
export DISPLAY=localhost:0.0
export DISPLAY=ipaddress:0.0, but no luck.
Can you explain me what could be the reason.
JAVA ERROR:
Exception in thread "main" 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:134)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:62)
at sun.awt.motif.MToolkit.<clinit>(MToolkit.java:81)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at java.awt.Toolkit$2.run(Toolkit.java:748)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:739)
at java.awt.Toolkit.getEventQueue(Toolkit.java:1519)
at java.awt.EventQueue.invokeLater(EventQueue.java:792)
at javax.swing.SwingUtilities.invokeLater(SwingUtilities.java:1170)
at FrameDemo.main(FrameDemo.java:35)
Please let me know your suggestions as possible as follows.
PuneProgrammer

You are probably creating images on the fly.
Due to a bug/annoyance in the JDK, it requires an X-display. This is not related to the Sun ONE Webserver but a general problem.
-Either install an X server, but this might not be possible because of a server security strip.
-install a virtual X xvfb or something alike to emulate this behaviour.
I thought it would be solved in newer JDK's but in which i'm not sure.

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    I'm assuming you're using JWSDP 1.6 as I see Fastinfoset.jar in your list. You are missing some jar files in your classpath there. The best way to know what you need is to look at the release notes for JWSDP 1.6. Since you're building a web serivce start with the table in there and lookup JAX-RPC. It'll show you what jar files are needed and what other libraries are needed. Now depending on what you're doing you don't really need all those.
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    Ryan

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