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Gtk-WARNING **: cannot open dislplay: -> error

Hello,

CentOS5 on a remote datacenter server, with no GUI like gnome/kde.
I started it using the same command on Ubuntu Feisty:

Quote:

java -Xmx256m -Djava.awt.headless=true -jar /root/phex/phex.jar

And here's a little snippet.

Quote:

[root@blc ~]# java -Xmx256m -Djava.awt.headless=true -jar /root/phex/phex.jar

(.:3515): Gtk-WARNING **: cannot open display:

[root@blc ~]# java --v
gij: unrecognized option -- `--v'
Try `gij --help' for more information.

[root@blc ~]# gij --help
Usage: gij [OPTION] ... CLASS [ARGS] ...
to interpret Java bytecodes, or
gij -jar [OPTION] ... JARFILE [ARGS] ...
to execute a jar file

--cp LIST set class path
--classpath LIST set class path
-DVAR=VAL define property VAR with value VAL
-?, --help print this help, then exit
-X print help on supported -X options, then exit
--ms=NUMBER set initial heap size
--mx=NUMBER set maximum heap size
--verbose[:class] print information about class loading
--showversion print version number, then keep going
--version print version number, then exit

Options can be specified with `-' or `--'.

See GCJ: The GNU Compiler for Java - GNU Project - Free Software Foundation (FSF) for information on reporting bugs
[root@blc ~]#

Please help.
Thank you.

I don't think Phex will run on GCJ. GCJ is not fully supporting Java 1.5 yet, I think.
I recommend you try to use Sun Java.

Quote:

Originally Posted by GregorK (Post 298579)

I don't think Phex will run on GCJ. GCJ is not fully supporting Java 1.5 yet, I think.
I recommend you try to use Sun Java.

Hi, initially I had tried to do so, and didn't work.
So I resorted to yum install java.

If you could be so kind to help me remove all these 'offending' javas and show me how I can install sun java, I'd be very grateful.

Thank you.

Quote:

Originally Posted by GregorK (Post 298652)

Try this:
man update-java-alternatives

or this:

How to install a specific version of Java on Ubuntu « The Wayward Word Press

Hi,

I'm on CentOS5.

Quote:

[root@blc ~]# man update-java-alternatives
No manual entry for update-java-alternatives
[root@blc ~]#

Thought I have read Ubuntu somewhere...
But why dont you try google?? It brings you a huge bunch of CentOS5 and Java related pages... like:
HowTos/JavaOnCentOS - CentOS Wiki

To be honest, I tried 'em all. I'm a googler more than a forumer, lol.
And nothing seems to be working.

Do you have an X-Server installed on the server?

Some Java classes still need the presence of an X-Server, even though they don't use it.