Re: Can't connect to X11 window server using '0:0' as the value of the display and now java.awt.HeadlessException

2003-03-23 Thread Stephen Riek 

 On Thu, 2003-03-20 at 20:36, Micael wrote:
 For me the easiest thing was just to provide the right command line options 
 (java.awt.headless=true) when I started up Tomcat.
May I ask, how you did this ? I've also encountered
JNI_OnLoad errors runing on Solaris due, I suspect, the lack of
XWindows on my server.  I tried adding the headless flag to 
my catalina.sh script as follows ~
elif [ $1 = start ] ; then
  shift
  touch $CATALINA_BASE/logs/catalina.out
  if [ $1 = -security ] ; then
echo Using Security Manager
shift
$_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \
  -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -classpath $CLASSPATH \
  -Djava.security.manager \
  -Djava.security.policy==$CATALINA_BASE/conf/catalina.policy \
  -Dcatalina.base=$CATALINA_BASE \
  -Dcatalina.home=$CATALINA_HOME \
  -Djava.io.tmpdir=$CATALINA_TMPDIR \
  -Djava.awt.headless=true \
  org.apache.catalina.startup.Bootstrap $@ start \
   $CATALINA_BASE/logs/catalina.out 21 
  else
$_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \
  -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -classpath $CLASSPATH \
  -Dcatalina.base=$CATALINA_BASE \
  -Dcatalina.home=$CATALINA_HOME \
  -Djava.io.tmpdir=$CATALINA_TMPDIR \
  -Djava.awt.headless=true \
  org.apache.catalina.startup.Bootstrap $@ start \
   $CATALINA_BASE/logs/catalina.out 21 
  fi
But that just resulted in the following error,
java.awt.HeadlessException
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:121)
at java.awt.Window.(Window.java:266)
at java.awt.Frame.(Frame.java:398)
at java.awt.Frame.(Frame.java:363)
at ImageUtils.loadImage(Unknown Source)

where the loadImage() function is simply supposed to load an image,
 public static Image loadImage(String fileName) {
  Image image = Toolkit.getDefaultToolkit().getImage(fileName);
  MediaTracker mediaTracker = new MediaTracker(new Frame());
  mediaTracker.addImage(image, 0);
  try {
   mediaTracker.waitForID(0);
  }
  catch (InterruptedException ie) {
   //
  }
  return image;
 }
Any ideas/help would be great.
Stephen.
ps. I also tried PJA but couldn't get that to work either :(




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Re: Can't connect to X11 window server using '0:0' as the value of the display and now java.awt.HeadlessException

2003-03-23 Thread Micael 
I added the headless flag to catalina.sh as follows:

# - Execute The Requested Command -

echo Using CATALINA_BASE:   $CATALINA_BASE
echo Using CATALINA_HOME:   $CATALINA_HOME
echo Using CATALINA_TMPDIR: $CATALINA_TMPDIR
echo Using JAVA_HOME:   $JAVA_HOME
if [ $1 = jpda ] ; then
  if [ -z $JPDA_ADDRESS ]; then
JPDA_ADDRESS=8000
  fi
  if [ -z $JDPA_OPTS ]; then
JPDA_OPTS=-Xdebug 
-Xrunjdwp:transport=dt_socket,address=$JPDA_ADDRESS,server=y,suspend=n
  fi
  CATALINA_OPTS=$CATALINA_OPTS $JPDA_OPTS
  shift
fi
CATALINA_OPTS=-Djava.awt.headless=true

This worked fine.

At 08:15 AM 3/23/03 +, you wrote:

 On Thu, 2003-03-20 at 20:36, Micael wrote:
 For me the easiest thing was just to provide the right command line 
options
 (java.awt.headless=true) when I started up Tomcat.
May I ask, how you did this ? I've also encountered
JNI_OnLoad errors runing on Solaris due, I suspect, the lack of
XWindows on my server.  I tried adding the headless flag to
my catalina.sh script as follows ~
elif [ $1 = start ] ; then
  shift
  touch $CATALINA_BASE/logs/catalina.out
  if [ $1 = -security ] ; then
echo Using Security Manager
shift
$_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \
  -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -classpath $CLASSPATH \
  -Djava.security.manager \
  -Djava.security.policy==$CATALINA_BASE/conf/catalina.policy \
  -Dcatalina.base=$CATALINA_BASE \
  -Dcatalina.home=$CATALINA_HOME \
  -Djava.io.tmpdir=$CATALINA_TMPDIR \
  -Djava.awt.headless=true \
  org.apache.catalina.startup.Bootstrap $@ start \
   $CATALINA_BASE/logs/catalina.out 21 
  else
$_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \
  -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -classpath $CLASSPATH \
  -Dcatalina.base=$CATALINA_BASE \
  -Dcatalina.home=$CATALINA_HOME \
  -Djava.io.tmpdir=$CATALINA_TMPDIR \
  -Djava.awt.headless=true \
  org.apache.catalina.startup.Bootstrap $@ start \
   $CATALINA_BASE/logs/catalina.out 21 
  fi
But that just resulted in the following error,
java.awt.HeadlessException
at 
java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:121)
at java.awt.Window.(Window.java:266)
at java.awt.Frame.(Frame.java:398)
at java.awt.Frame.(Frame.java:363)
at ImageUtils.loadImage(Unknown Source)

where the loadImage() function is simply supposed to load an image,
 public static Image loadImage(String fileName) {
  Image image = Toolkit.getDefaultToolkit().getImage(fileName);
  MediaTracker mediaTracker = new MediaTracker(new Frame());
  mediaTracker.addImage(image, 0);
  try {
   mediaTracker.waitForID(0);
  }
  catch (InterruptedException ie) {
   //
  }
  return image;
 }
Any ideas/help would be great.
Stephen.
ps. I also tried PJA but couldn't get that to work either :(


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Re: Can't connect to X11 window server using '0:0' as the value of the display and now java.awt.HeadlessException

2003-03-23 Thread Stephen Riek 

Thanks Micael. Tried the same thing and got the same results. 
Looks like Catalina/Tomcat is indeed using headless mode but
it's not working with my Java (1.4) and operating system (SunOS 5.6).
I'm presuming you're using this to create/generate graphics in a
servlet ?  Do you mind posting sample Java that creates a
Toolkit or MediaTracker (and which therefore requires headless 
mode) ? I can't fathom what's wrong with mine. Mine works fine
when running on Win2K and Tomcat, but now dying on Sun.
Thanks for the help,
Stephen.
 
 Micael [EMAIL PROTECTED] wrote:
I added the headless flag to catalina.sh as follows:

# - Execute The Requested Command -

echo Using CATALINA_BASE: $CATALINA_BASE
echo Using CATALINA_HOME: $CATALINA_HOME
echo Using CATALINA_TMPDIR: $CATALINA_TMPDIR
echo Using JAVA_HOME: $JAVA_HOME

if [ $1 = jpda ] ; then
if [ -z $JPDA_ADDRESS ]; then
JPDA_ADDRESS=8000
fi
if [ -z $JDPA_OPTS ]; then
JPDA_OPTS=-Xdebug 
-Xrunjdwp:transport=dt_socket,address=$JPDA_ADDRESS,server=y,suspend=n
fi
CATALINA_OPTS=$CATALINA_OPTS $JPDA_OPTS
shift
fi
CATALINA_OPTS=-Djava.awt.headless=true

This worked fine.


At 08:15 AM 3/23/03 +, you wrote:

  On Thu, 2003-03-20 at 20:36, Micael wrote:
  For me the easiest thing was just to provide the right command line 
 options
  (java.awt.headless=true) when I started up Tomcat.
May I ask, how you did this ? I've also encountered
JNI_OnLoad errors runing on Solaris due, I suspect, the lack of
XWindows on my server. I tried adding the headless flag to
my catalina.sh script as follows ~
elif [ $1 = start ] ; then
 shift
 touch $CATALINA_BASE/logs/catalina.out
 if [ $1 = -security ] ; then
 echo Using Security Manager
 shift
 $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \
 -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -classpath $CLASSPATH \
 -Djava.security.manager \
 -Djava.security.policy==$CATALINA_BASE/conf/catalina.policy \
 -Dcatalina.base=$CATALINA_BASE \
 -Dcatalina.home=$CATALINA_HOME \
 -Djava.io.tmpdir=$CATALINA_TMPDIR \
 -Djava.awt.headless=true \
 org.apache.catalina.startup.Bootstrap $@ start \
  $CATALINA_BASE/logs/catalina.out 21 
 else
 $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \
 -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -classpath $CLASSPATH \
 -Dcatalina.base=$CATALINA_BASE \
 -Dcatalina.home=$CATALINA_HOME \
 -Djava.io.tmpdir=$CATALINA_TMPDIR \
 -Djava.awt.headless=true \
 org.apache.catalina.startup.Bootstrap $@ start \
  $CATALINA_BASE/logs/catalina.out 21 
 fi
But that just resulted in the following error,
java.awt.HeadlessException
 at 
 java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:121)
 at java.awt.Window.(Window.java:266)
 at java.awt.Frame.(Frame.java:398)
 at java.awt.Frame.(Frame.java:363)
 at ImageUtils.loadImage(Unknown Source)

where the loadImage() function is simply supposed to load an image,
 public static Image loadImage(String fileName) {
 Image image = Toolkit.getDefaultToolkit().getImage(fileName);
 MediaTracker mediaTracker = new MediaTracker(new Frame());
 mediaTracker.addImage(image, 0);
 try {
 mediaTracker.waitForID(0);
 }
 catch (InterruptedException ie) {
 //
 }
 return image;
 }
Any ideas/help would be great.
Stephen.
ps. I also tried PJA but couldn't get that to work either :(




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Re: Can't connect to X11 window server using '0:0' as the value of the display and now java.awt.HeadlessException

2003-03-23 Thread Micael 
Here are two uses, if they are of help.  I am using Red Hat 7.2 Linux.

FIRST:

public JPEGEncoder(Image image, int quality, OutputStream out) {
MediaTracker tracker = new MediaTracker(this);
tracker.addImage(image, 0);
try {
tracker.waitForID(0);
} catch (InterruptedException e) {
}
/* Quality of the image.
 * 0 to 100 and from bad image quality, high compression 
to good
 * image quality low compression*/
this.quality = quality;

/* Getting picture information
 * It takes the Width, Height and RGB scans of the image. */
info= new JPEGInfo(image);
imageHeight = info.imageHeight;
imageWidth  = info.imageWidth;
outStream   = new BufferedOutputStream(out);
dct = new JPEGDCT(quality);
huffman = new JPEGConvert(imageWidth,imageHeight);
}
SECOND:
public class JPEGCompression {
/* The parameter element compressionQuality is the compression 
(compressionQuality) from
 * 0 to 100. */
public void compress(String inputImage, String outputImage, String 
compressionQuality) {
FileOutputStream dataOut = null;
int  compression = 80;

File outputFile = new File(outputImage);
int i = 1;
// Makes sure there are no duplicates
while (outputFile.exists()) {
outputFile = new File(outputImage.substring(0, 
outputImage.lastIndexOf(.)) + (i++) + .jpg);
}

File inputFile = new File(inputImage);

if (inputFile.exists()) {
try {
dataOut = new FileOutputStream(outputFile);
} catch(IOException e) {}
try {
compression = 
Integer.parseInt(compressionQuality);
} catch (NumberFormatException e) {
e.printStackTrace();
}
Image image = 
Toolkit.getDefaultToolkit().getImage(inputImage);
JPEGEncoder encoder = new JPEGEncoder(image, 
compression, dataOut);
encoder.compress();
try {
dataOut.close();
} catch(IOException e) {}
} else {
throw new IllegalArgumentException(We couldn't 
find  + inputImage + . Is it in another directory?);
}
}
}

At 09:09 AM 3/23/03 +, you wrote:

Thanks Micael. Tried the same thing and got the same results.
Looks like Catalina/Tomcat is indeed using headless mode but
it's not working with my Java (1.4) and operating system (SunOS 5.6).
I'm presuming you're using this to create/generate graphics in a
servlet ?  Do you mind posting sample Java that creates a
Toolkit or MediaTracker (and which therefore requires headless
mode) ? I can't fathom what's wrong with mine. Mine works fine
when running on Win2K and Tomcat, but now dying on Sun.
Thanks for the help,
Stephen.
 Micael [EMAIL PROTECTED] wrote:
I added the headless flag to catalina.sh as follows:
# - Execute The Requested Command 
-

echo Using CATALINA_BASE: $CATALINA_BASE
echo Using CATALINA_HOME: $CATALINA_HOME
echo Using CATALINA_TMPDIR: $CATALINA_TMPDIR
echo Using JAVA_HOME: $JAVA_HOME
if [ $1 = jpda ] ; then
if [ -z $JPDA_ADDRESS ]; then
JPDA_ADDRESS=8000
fi
if [ -z $JDPA_OPTS ]; then
JPDA_OPTS=-Xdebug
-Xrunjdwp:transport=dt_socket,address=$JPDA_ADDRESS,server=y,suspend=n
fi
CATALINA_OPTS=$CATALINA_OPTS $JPDA_OPTS
shift
fi
CATALINA_OPTS=-Djava.awt.headless=true
This worked fine.

At 08:15 AM 3/23/03 +, you wrote:

  On Thu, 2003-03-20 at 20:36, Micael wrote:
  For me the easiest thing was just to provide the right command line
 options
  (java.awt.headless=true) when I started up Tomcat.
May I ask, how you did this ? I've also encountered
JNI_OnLoad errors runing on Solaris due, I suspect, the lack of
XWindows on my server. I tried adding the headless flag to
my catalina.sh script as follows ~
elif [ $1 = start ] ; then
 shift
 touch $CATALINA_BASE/logs/catalina.out
 if [ $1 = -security ] ; then
 echo Using Security Manager
 shift
 $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \
 -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -classpath $CLASSPATH \
 -Djava.security.manager \
 -Djava.security.policy==$CATALINA_BASE/conf/catalina.policy \
 -Dcatalina.base=$CATALINA_BASE \
 -Dcatalina.home=$CATALINA_HOME \
 -Djava.io.tmpdir=$CATALINA_TMPDIR \
 -Djava.awt.headless=true \
 org.apache.catalina.startup.Bootstrap $@ start \
  $CATALINA_BASE/logs/catalina.out 21 
 else
 $_RUNJAVA

Re: Can't connect to X11 window server using '0:0' as the value of the display and now java.awt.HeadlessException

2003-03-23 Thread Micael 
The material George gave you is really good.  Do you have X11 installed, 
even if not running?  I am not a Solaris guy, so don't know what that may 
mean in that context.

At 09:09 AM 3/23/03 +, you wrote:

Thanks Micael. Tried the same thing and got the same results.
Looks like Catalina/Tomcat is indeed using headless mode but
it's not working with my Java (1.4) and operating system (SunOS 5.6).
I'm presuming you're using this to create/generate graphics in a
servlet ?  Do you mind posting sample Java that creates a
Toolkit or MediaTracker (and which therefore requires headless
mode) ? I can't fathom what's wrong with mine. Mine works fine
when running on Win2K and Tomcat, but now dying on Sun.
Thanks for the help,
Stephen.
 Micael [EMAIL PROTECTED] wrote:
I added the headless flag to catalina.sh as follows:
# - Execute The Requested Command 
-

echo Using CATALINA_BASE: $CATALINA_BASE
echo Using CATALINA_HOME: $CATALINA_HOME
echo Using CATALINA_TMPDIR: $CATALINA_TMPDIR
echo Using JAVA_HOME: $JAVA_HOME
if [ $1 = jpda ] ; then
if [ -z $JPDA_ADDRESS ]; then
JPDA_ADDRESS=8000
fi
if [ -z $JDPA_OPTS ]; then
JPDA_OPTS=-Xdebug
-Xrunjdwp:transport=dt_socket,address=$JPDA_ADDRESS,server=y,suspend=n
fi
CATALINA_OPTS=$CATALINA_OPTS $JPDA_OPTS
shift
fi
CATALINA_OPTS=-Djava.awt.headless=true
This worked fine.

At 08:15 AM 3/23/03 +, you wrote:

  On Thu, 2003-03-20 at 20:36, Micael wrote:
  For me the easiest thing was just to provide the right command line
 options
  (java.awt.headless=true) when I started up Tomcat.
May I ask, how you did this ? I've also encountered
JNI_OnLoad errors runing on Solaris due, I suspect, the lack of
XWindows on my server. I tried adding the headless flag to
my catalina.sh script as follows ~
elif [ $1 = start ] ; then
 shift
 touch $CATALINA_BASE/logs/catalina.out
 if [ $1 = -security ] ; then
 echo Using Security Manager
 shift
 $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \
 -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -classpath $CLASSPATH \
 -Djava.security.manager \
 -Djava.security.policy==$CATALINA_BASE/conf/catalina.policy \
 -Dcatalina.base=$CATALINA_BASE \
 -Dcatalina.home=$CATALINA_HOME \
 -Djava.io.tmpdir=$CATALINA_TMPDIR \
 -Djava.awt.headless=true \
 org.apache.catalina.startup.Bootstrap $@ start \
  $CATALINA_BASE/logs/catalina.out 21 
 else
 $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \
 -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -classpath $CLASSPATH \
 -Dcatalina.base=$CATALINA_BASE \
 -Dcatalina.home=$CATALINA_HOME \
 -Djava.io.tmpdir=$CATALINA_TMPDIR \
 -Djava.awt.headless=true \
 org.apache.catalina.startup.Bootstrap $@ start \
  $CATALINA_BASE/logs/catalina.out 21 
 fi
But that just resulted in the following error,
java.awt.HeadlessException
 at
 java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:121)
 at java.awt.Window.(Window.java:266)
 at java.awt.Frame.(Frame.java:398)
 at java.awt.Frame.(Frame.java:363)
 at ImageUtils.loadImage(Unknown Source)

where the loadImage() function is simply supposed to load an image,
 public static Image loadImage(String fileName) {
 Image image = Toolkit.getDefaultToolkit().getImage(fileName);
 MediaTracker mediaTracker = new MediaTracker(new Frame());
 mediaTracker.addImage(image, 0);
 try {
 mediaTracker.waitForID(0);
 }
 catch (InterruptedException ie) {
 //
 }
 return image;
 }
Any ideas/help would be great.
Stephen.
ps. I also tried PJA but couldn't get that to work either :(




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copying, distribution, or action taken in reliance on the contents of the
information contained in this transmission is strictly prohibited. If you
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information contained in this transmission is strictly

Re: Can't connect to X11 window server using '0:0' as the value of the display and now java.awt.HeadlessException

2003-03-23 Thread Luciano Kiniti Issoe 
Hi all,

It have been a long time since I read any post... but I can't ignore someone in 
trouble.
I had a similar problem using java.AWT with linux...
It needs a graphics system server, like windows or X11 running in your server. 
But as X11 was too heavy for my system, my workaround was to start Xvfb (X virtual 
frame buffer). Google it  to 
get a Solaris Xvfb...
take a look also at 
http://developer.java.sun.com/developer/bugParade/bugs/4281163.html 

Regards,

miagi


On Sun, 23 Mar 2003 12:15:04 -0800, Micael [EMAIL PROTECTED] escreveu :

 De: Micael [EMAIL PROTECTED]
 Data: Sun, 23 Mar 2003 12:15:04 -0800
 Para: Tomcat Users List [EMAIL PROTECTED]
 Assunto: Re: Can't connect to X11 window server using '0:0' as the   value of the 
 display and now 
java.awt.HeadlessException
 
 The material George gave you is really good.  Do you have X11 installed, 
 even if not running?  I am not a Solaris guy, so don't know what that may 
 mean in that context.
 
 At 09:09 AM 3/23/03 +, you wrote:
 
 Thanks Micael. Tried the same thing and got the same results.
 Looks like Catalina/Tomcat is indeed using headless mode but
 it's not working with my Java (1.4) and operating system (SunOS 5.6).
 I'm presuming you're using this to create/generate graphics in a
 servlet ?  Do you mind posting sample Java that creates a
 Toolkit or MediaTracker (and which therefore requires headless
 mode) ? I can't fathom what's wrong with mine. Mine works fine
 when running on Win2K and Tomcat, but now dying on Sun.
 Thanks for the help,
 Stephen.
 
   Micael [EMAIL PROTECTED] wrote:
 I added the headless flag to catalina.sh as follows:
 
 # - Execute The Requested Command 
 -
 
 echo Using CATALINA_BASE: $CATALINA_BASE
 echo Using CATALINA_HOME: $CATALINA_HOME
 echo Using CATALINA_TMPDIR: $CATALINA_TMPDIR
 echo Using JAVA_HOME: $JAVA_HOME
 
 if [ $1 = jpda ] ; then
 if [ -z $JPDA_ADDRESS ]; then
 JPDA_ADDRESS=8000
 fi
 if [ -z $JDPA_OPTS ]; then
 JPDA_OPTS=-Xdebug
 -Xrunjdwp:transport=dt_socket,address=$JPDA_ADDRESS,server=y,suspend=n
 fi
 CATALINA_OPTS=$CATALINA_OPTS $JPDA_OPTS
 shift
 fi
 CATALINA_OPTS=-Djava.awt.headless=true
 
 This worked fine.
 
 
 At 08:15 AM 3/23/03 +, you wrote:
 
On Thu, 2003-03-20 at 20:36, Micael wrote:
For me the easiest thing was just to provide the right command line
   options
(java.awt.headless=true) when I started up Tomcat.
  May I ask, how you did this ? I've also encountered
  JNI_OnLoad errors runing on Solaris due, I suspect, the lack of
  XWindows on my server. I tried adding the headless flag to
  my catalina.sh script as follows ~
  elif [ $1 = start ] ; then
   shift
   touch $CATALINA_BASE/logs/catalina.out
   if [ $1 = -security ] ; then
   echo Using Security Manager
   shift
   $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \
   -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -classpath $CLASSPATH \
   -Djava.security.manager \
   -Djava.security.policy==$CATALINA_BASE/conf/catalina.policy \
   -Dcatalina.base=$CATALINA_BASE \
   -Dcatalina.home=$CATALINA_HOME \
   -Djava.io.tmpdir=$CATALINA_TMPDIR \
   -Djava.awt.headless=true \
   org.apache.catalina.startup.Bootstrap $@ start \
$CATALINA_BASE/logs/catalina.out 21 
   else
   $_RUNJAVA $JAVA_OPTS $CATALINA_OPTS \
   -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -classpath $CLASSPATH \
   -Dcatalina.base=$CATALINA_BASE \
   -Dcatalina.home=$CATALINA_HOME \
   -Djava.io.tmpdir=$CATALINA_TMPDIR \
   -Djava.awt.headless=true \
   org.apache.catalina.startup.Bootstrap $@ start \
$CATALINA_BASE/logs/catalina.out 21 
   fi
  But that just resulted in the following error,
  java.awt.HeadlessException
   at
   java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:121)
   at java.awt.Window.(Window.java:266)
   at java.awt.Frame.(Frame.java:398)
   at java.awt.Frame.(Frame.java:363)
   at ImageUtils.loadImage(Unknown Source)
  
  where the loadImage() function is simply supposed to load an image,
   public static Image loadImage(String fileName) {
   Image image = Toolkit.getDefaultToolkit().getImage(fileName);
   MediaTracker mediaTracker = new MediaTracker(new Frame());
   mediaTracker.addImage(image, 0);
   try {
   mediaTracker.waitForID(0);
   }
   catch (InterruptedException ie) {
   //
   }
   return image;
   }
  Any ideas/help would be great.
  Stephen.
  ps. I also tried PJA but couldn't get that to work either :(
  
  
  
  
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RE: Can't connect to X11 window server using '0:0' as the value of the display and now java.awt.HeadlessException

2003-03-20 Thread Chad Johnson 
Hey,
  From the 1.4.x api docs:

HeadlessException: Thrown when code that is dependent on a keyboard,
display, or mouse is called in an environment that does not support a
keyboard, display, or mouse.

That Frame seems to be the culprit of this.

-Chad Johnson

-Original Message-
From: Georges Roux [mailto:[EMAIL PROTECTED] 
Sent: Thursday, March 20, 2003 11:09 AM
To: Tomcat Users List
Subject: Re: Can't connect to X11 window server using '0:0' as the value
of the display and now java.awt.HeadlessException


Hi,

I put System.setProperty(java.awt.headless, true);
in my servlet init method it's ok, but now when I open a Frame, I get
the exception HeadlessException:

java.awt.HeadlessException
at 
java.awt.GraphicsEnvironnement.checkHeadless(GraphicsEnvironement.java:1
21)
at java.awt.window.init(Window.java:226)
at java.awt.Frame.init(Frame.java:398)
...

What can I do?

Georges



Chad Johnson wrote:

If I had to wager a guess you'll need to run tomcat in a 'headless' 
JVM. To do that add :

-Djava.awt.headless=true

To the :

CATALINA_OPTS

environment variable.

-Chad Johnson

-Original Message-
From: Georges Roux [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 18, 2003 5:32 PM
To: [EMAIL PROTECTED]
Subject: Can't connect to X11 window server using '0:0' as the value of
the display


Hello everybody,

Hi run Tomcat 4.1.18 Standalone on Linux debian(sid)and use 
J2sdk1.4.1_01.

I have a servlet which manipulate exif informations in jpg images. it 
works well but when I try to run it on tomcat it fails (error 500)

I have the following error:
Can't connect to X11 window server using '0:0' as the value of the 
display

What can I do?

Georges


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-- 

18:54 18:54 connard
18:55 18:54 t'as que ca a faire? ;)
18:56 18:55 je m'ennuies ferme ouais ! encore 5mn avant la fin du taf,
  donc j'en profite pour passer dans les fortunes :)


+==+
|  |
|  Georges Roux|
|  URL : georgesroux.pacageek.org  |
|  email : [EMAIL PROTECTED]|
|  mobile : +33 (0) 613977573  |
+==+



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Re: Can't connect to X11 window server using '0:0' as the value of the display and now java.awt.HeadlessException

2003-03-20 Thread Micael 
You using Linux?  What is your environment?  Anyway, setting the JVM is the 
way to go if you are using Linux.

At 06:09 PM 3/20/03 +0100, you wrote:
Hi,

I put System.setProperty(java.awt.headless, true);
in my servlet init method it's ok, but now when I open a Frame,
I get the exception HeadlessException:
java.awt.HeadlessException
   at 
java.awt.GraphicsEnvironnement.checkHeadless(GraphicsEnvironement.java:121)
   at java.awt.window.init(Window.java:226)
   at java.awt.Frame.init(Frame.java:398)
   ...

What can I do?

Georges



Chad Johnson wrote:

If I had to wager a guess you'll need to run tomcat in a 'headless' JVM.
To do that add :
-Djava.awt.headless=true

To the :

CATALINA_OPTS

environment variable.

-Chad Johnson

-Original Message-
From: Georges Roux [mailto:[EMAIL PROTECTED] Sent: Tuesday, 
March 18, 2003 5:32 PM
To: [EMAIL PROTECTED]
Subject: Can't connect to X11 window server using '0:0' as the value of
the display

Hello everybody,

Hi run Tomcat 4.1.18 Standalone on Linux debian(sid)and use
J2sdk1.4.1_01.
I have a servlet which manipulate exif informations in jpg images. it
works well but when I try to run it on tomcat it fails (error 500)
I have the following error:
Can't connect to X11 window server using '0:0' as the value of the
display
What can I do?

Georges

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--

18:54 18:54 connard
18:55 18:54 t'as que ca a faire? ;)
18:56 18:55 je m'ennuies ferme ouais ! encore 5mn avant la fin du taf,
 donc j'en profite pour passer dans les fortunes :)
+==+
|  |
|  Georges Roux|
|  URL : georgesroux.pacageek.org  |
|  email : [EMAIL PROTECTED]|
|  mobile : +33 (0) 613977573  |
+==+


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Re: Can't connect to X11 window server using '0:0' as the value of the display and now java.awt.HeadlessException

2003-03-20 Thread Glenn Parsons 
At 07:18 PM 3/20/2003 +, you wrote:
ok: there is another solution to the headless thing: (I wrote a
graphical servlet that runs on a linux box without X, and had the same
problems: The headless seemed to work, well, kinda, but not to my
liking): So I went the xvfb route: This is a virtual frame buffer to can
install on a linux box that emulates an X session, which then kinda
solves all the graphical problems in one step. You set the xvfb to the
resolution required and just start and forget about it.
Worth I shot, I'd say, and might safe you hours of frustration [It did
me ;-) ].
 I had tried xvfb and had some difficulties. Any pointers? suggestions?

Thanks,
Glenn


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Re: Can't connect to X11 window server using '0:0' as the value of the display and now java.awt.HeadlessException

2003-03-20 Thread Glenn Parsons 


At 07:59 PM 3/20/2003 +, you wrote:
Difficult to say: What kind of problems?

I start mine using

Xvfb :0 -screen 0 1600x1200x32 

{I just added it to rc.local }

Will retry with resolution change.

Thanks,
Glenn


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Re: Can't connect to X11 window server using '0:0' as the value of the display and now java.awt.HeadlessException

2003-03-20 Thread Micael 
For me the easiest thing was just to provide the right command line options 
(java.awt.headless=true) when I started up Tomcat.

At 02:27 PM 3/20/03 -0500, you wrote:
At 07:18 PM 3/20/2003 +, you wrote:
ok: there is another solution to the headless thing: (I wrote a
graphical servlet that runs on a linux box without X, and had the same
problems: The headless seemed to work, well, kinda, but not to my
liking): So I went the xvfb route: This is a virtual frame buffer to can
install on a linux box that emulates an X session, which then kinda
solves all the graphical problems in one step. You set the xvfb to the
resolution required and just start and forget about it.
Worth I shot, I'd say, and might safe you hours of frustration [It did
me ;-) ].
 I had tried xvfb and had some difficulties. Any pointers? suggestions?

Thanks,
Glenn


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copying, distribution, or action taken in reliance on the contents of the 
information contained in this transmission is strictly prohibited.  If you 
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