java can't connect to Xserver
 

hi need to run the following commands to debug a program
1 # Compile the java installation program
2 javac -classpath java java/Install/Install.java
3 # Execute the compiled java program
4 java -classpath java Install.Install -compile

but when i am executing i take the following message



akroneiro:/usr/local/JabberwockyBinary # ./install
Xlib: connection to ":0.0" refused by server
Xlib: Invalid XDM-AUTHORIZATION-1 key (failed key comparison)
Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using ':0.0' as th
e 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 java.awt.Font.initializeFont(Font.java:308)
at java.awt.Font.<init>(Font.java:344)
at javax.swing.plaf.metal.DefaultMetalTheme$FontDelegate.getFont(DefaultMetalTheme.java:195)
at javax.swing.plaf.metal.DefaultMetalTheme.getFont(DefaultMetalTheme.java:153)
at javax.swing.plaf.metal.DefaultMetalTheme.getControlTextFont(DefaultMetalTheme.java:129)
at javax.swing.plaf.metal.MetalLookAndFeel$FontActiveValue.createValue(MetalLookAndFeel.java:1399
)
at javax.swing.UIDefaults.getFromHashtable(UIDefaults.java:196)
at javax.swing.UIDefaults.get(UIDefaults.java:126)
at javax.swing.MultiUIDefaults.get(MultiUIDefaults.java:44)
at javax.swing.UIDefaults.getFont(UIDefaults.java:346)
at javax.swing.UIManager.getFont(UIManager.java:491)
at javax.swing.LookAndFeel.installColorsAndFont(LookAndFeel.java:89)
at javax.swing.plaf.basic.BasicLabelUI.installDefaults(BasicLabelUI.java:302)
at javax.swing.plaf.basic.BasicLabelUI.installUI(BasicLabelUI.java:254)
at javax.swing.JComponent.setUI(JComponent.java:449)
at javax.swing.JLabel.setUI(JLabel.java:238)
at javax.swing.JLabel.updateUI(JLabel.java:248)
at javax.swing.JLabel.<init>(JLabel.java:141)
at javax.swing.JLabel.<init>(JLabel.java:171)
at Install.Install.main(Install.java:71)





as you can see it can't connect as 0:0
the display has value


echo $DISPLAY
:0.0

What i must do?

xhost
 

try (as the user you are logged in as): xhost +

This is the X perms equivalent of putting chmod 0777 on a file but should stop your Xauth failures.

(A better, slightly more secure command is `xhost +local` which allows any local user to use the X display).

Then run the java thing again. Presumably you are running the java program as someone other than the one you logged into your XFree86 session with?

If that doesn't work, it could be some dodgy java - the line says it things :0.0 is invalid... so perhaps set it to:

export DISPLAY=localhost:0.0
or
export DISPLAY=akroneiro:0.0


Kev

thx
 

thx for your time...
Look that only the last command seems working but still nothing

akroneiro:/usr/local/JabberwockyBinary # export DISPLAY=localhost:0.0
akroneiro:/usr/local/JabberwockyBinary # xhost +
Xlib: connection to "localhost:0.0" refused by server
Xlib: Invalid XDM-AUTHORIZATION-1 key (failed key comparison)
xhost: unable to open display "localhost:0.0"

akroneiro:/usr/local/JabberwockyBinary # export DISPLAY=akroneiro:0.0
akroneiro:/usr/local/JabberwockyBinary # ./install
Xlib: connection to "akroneiro:0.0" refused by server
Xlib: Invalid XDM-AUTHORIZATION-1 key (failed key comparison)
Exception in thread "main" java.lang.InternalError: Can't connect to X11 window
server using 'akroneiro:0.0' as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:1
34)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvi
ronment.java:62)
at java.awt.Font.initializeFont(Font.java:308)
at java.awt.Font.<init>(Font.java:344)
at javax.swing.plaf.metal.DefaultMetalTheme$FontDelegate.getFont(Default
MetalTheme.java:195)
at javax.swing.plaf.metal.DefaultMetalTheme.getFont(DefaultMetalTheme.ja
va:153)
at javax.swing.plaf.metal.DefaultMetalTheme.getControlTextFont(DefaultMe
talTheme.java:129)
at javax.swing.plaf.metal.MetalLookAndFeel$FontActiveValue.createValue(M
etalLookAndFeel.java:1399)
at javax.swing.UIDefaults.getFromHashtable(UIDefaults.java:196)
at javax.swing.UIDefaults.get(UIDefaults.java:126)
at javax.swing.MultiUIDefaults.get(MultiUIDefaults.java:44)
at javax.swing.UIDefaults.getFont(UIDefaults.java:346)
at javax.swing.UIManager.getFont(UIManager.java:491)
at javax.swing.LookAndFeel.installColorsAndFont(LookAndFeel.java:89)
at javax.swing.plaf.basic.BasicLabelUI.installDefaults(BasicLabelUI.java
:302)
at javax.swing.plaf.basic.BasicLabelUI.installUI(BasicLabelUI.java:254)
at javax.swing.JComponent.setUI(JComponent.java:449)
at javax.swing.JLabel.setUI(JLabel.java:238)
at javax.swing.JLabel.updateUI(JLabel.java:248)
at javax.swing.JLabel.<init>(JLabel.java:141)
at javax.swing.JLabel.<init>(JLabel.java:171)
at Install.Install.main(Install.java:71)

thx
 

it works fine....!!!
The problem was that i was running the xterm as normal user and then i was entering in root mode...
The problem solved when i ran the Xserver as root

xhost +
Xlib: connection to "localhost:0.0" refused by server

says you are running the xhost command NOT as the person you originally logged in as.
The user that logs in controls "X11" - so if you log in as user1 and then su - user2 or something and try to run xhost as user2 you will get connection refused.

Presumably you are running Debian, su - ing and then running the command? Even root under Woody can't issue that command. Run it *as the user you have logged in as - not the one about to run the java command*

Kev

use following command
debian1:/etc# grep -r "DisallowTCP" *
gdm/factory-gdm.conf:DisallowTCP=true
gdm/factory-gdm.conf:# at the security/DisallowTCP setting!
gdm/gdm.conf:DisallowTCP=true
gdm/gdm.conf:# at the security/DisallowTCP setting!
grep: rc2.d/K77ntp-simple: No such file or directory
grep: rc3.d/K77ntp-simple: No such file or directory
X11/gdm/factory-gdm.conf:DisallowTCP=true
X11/gdm/factory-gdm.conf:# at the security/DisallowTCP setting!
X11/gdm/gdm.conf:DisallowTCP=true
X11/gdm/gdm.conf:# at the security/DisallowTCP setting!

Change all the DisallowTCP=true to false then restart x server and u can run any java gui