wine users - May 2010 - Need Help debugging a Java based windows application to run

Hi All,

I am trying to run a java based communication client developed for winidows to
run on Ubuntu/Wine.

First I tried installing the app without having JRE under Wine, it halted with
an error while installing JRE. So, I installed JRE separately under wine and
then the application. It installed correctly.

Now, when I run the application, it starts (I can see it under the process list)
and then crashes (the process disappears).

I tried running the app through command line using the following. 
export WINEDEBUG=1 ; wine /path/tp/app.exe

Here is the output.

fixme:reg:GetNativeSystemInfo (0x327800) using GetSystemInfo()
USER.DIR=Z:\home\androit
USER.DIR=Z:\home\androit
java.lang.NullPointerException
	at java.io.File.<init>(Unknown Source)
	at com.company.app.findCurrentVersion(Unknown Source)
	at com.company.app.main(Unknown Source)
	at org.eclipse.equinox.launcher.Main.run(Unknown Source)

Can you please help me with this? What do I need?

Thanks,
PD

pd1980 wrote:
> Hi All,
>
> I am trying to run a java based communication client developed for winidows
to run on Ubuntu/Wine.
>
> First I tried installing the app without having JRE under Wine, it halted
with an error while installing JRE. So, I installed JRE separately under wine
and then the application. It installed correctly.
>
> Now, when I run the application, it starts (I can see it under the process
list) and then crashes (the process disappears).
>
> I tried running the app through command line using the following. 
> export WINEDEBUG=1 ; wine /path/tp/app.exe
>
> Here is the output.
>
> fixme:reg:GetNativeSystemInfo (0x327800) using GetSystemInfo()
> USER.DIR=Z:\home\androit
> USER.DIR=Z:\home\androit
>   
This is a Java error that is coming from the lack of Eclipse support.  
You may need to install Eclipse for Windows...
> java.lang.NullPointerException
> 	at java.io.File.<init>(Unknown Source)
> 	at com.company.app.findCurrentVersion(Unknown Source)
> 	at com.company.app.main(Unknown Source)
> 	at org.eclipse.equinox.launcher.Main.run(Unknown Source)
>   
James McKenzie

On Sun, 2010-05-23 at 18:30 -0700, James McKenzie wrote:
> pd1980 wrote:
> > Hi All,
> >
> > I am trying to run a java based communication client developed for
winidows to run on Ubuntu/Wine.
> >
> > First I tried installing the app without having JRE under Wine, it
halted with an error while installing JRE. So, I installed JRE separately under
wine and then the application. It installed correctly.
> >
> > Now, when I run the application, it starts (I can see it under the
process list) and then crashes (the process disappears).
> >
> > I tried running the app through command line using the following. 
> > export WINEDEBUG=1 ; wine /path/tp/app.exe
> >
> > Here is the output.
> >
> > fixme:reg:GetNativeSystemInfo (0x327800) using GetSystemInfo()
> > USER.DIR=Z:\home\androit
> > USER.DIR=Z:\home\androit
> >   
> This is a Java error that is coming from the lack of Eclipse support.  
> You may need to install Eclipse for Windows...
> > java.lang.NullPointerException
> > 	at java.io.File.<init>(Unknown Source)
> > 	at com.company.app.findCurrentVersion(Unknown Source)
> > 	at com.company.app.main(Unknown Source)
> > 	at org.eclipse.equinox.launcher.Main.run(Unknown Source)
> >
Eclipse is not needed: java.io.File is a standard library class and is
part of the JRE install.

"app.exe" isn't a standard Java way of running an application: its
probably some sort of wrapper round the "java JavaApplication" command
that starts the JVM and it evidently didn't set JAVA_HOME or the
classpath.

To the OP: make sure your run-time environment sets the JAVA_HOME
environment variable as explained in the installation notes for the JRE.
That should allow your application to find the standard class libraries.
 
The easiest way of doing this may be to use a wrapper script that sets
JAVA_HOME and any other environment variables you need before it issues
the "wine ...." command.


Martin

> probably some sort of wrapper round the "java JavaApplication"
command
> that starts the JVM and it evidently didn't set JAVA_HOME or the
> classpath.
> 
> To the OP: make sure your run-time environment sets the JAVA_HOME
> environment variable as explained in the installation notes for the JRE.
> That should allow your application to find the standard class libraries.
> 
> The easiest way of doing this may be to use a wrapper script that sets
> JAVA_HOME and any other environment variables you need before it issues
> the "wine ...." command.
> 
> 
> Martin

Thank you James. Thank you Martin.

I tried the following on the command line, and it still gives the same error.

Code:

export JAVA_HOME=/home/pd/.wine/drive_c/Program\ Files/Java/jre6/bin/java;
export WINEDEBUG=1 ; 
wine /path/tp/app.exe 




FYI, I installed jre into wine using the windows installer
jre-6u20-windows-i586-s.exe. I also have java installed into my linux host
separately. I am setting JAVA_HOME to bin/java located inside wine directory.

Thanks,
PD

> I tried the following on the command line, and it still gives the same
error.
> 
> Code:
> 
> export JAVA_HOME=/home/pd/.wine/drive_c/Program\ Files/Java/jre6/bin/java;
>
You might try:

export JAVA_HOME="C:\Program Files\Java\jre6"
 
because JAVA_HOME should point to the root of the JRE version, not the
JVM executable. In addition the Windows JRE and/or the wrapper EXE are
going to expect an absolute path with that format and its not obvious to
me whether wine will detect and modify absolute paths supplied as
environment variables.
> export WINEDEBUG=1 ; 
> wine /path/tp/app.exe 
> 
> 
> 
> 
> FYI, I installed jre into wine using the windows installer
jre-6u20-windows-i586-s.exe.
> I also have java installed into my linux host separately. 
> I am setting JAVA_HOME to bin/java located inside wine directory.
> 
Have you checked that this is being overridden by the wine version?
Using a simple script like this:

#!/bin/bash
export JAVA_HOME="C:\Program Files\Java\jre6"
echo "JAVA_HOME=$JAVA_HOME"
export WINEDEBUG=1
cd /path/tp
wine app.exe 

will save you typing as you experiment. I suggest that you change the
wine invocation since many Windows programs expect that their load
directory is also their current working directory and I know nothing
about the expectations of app.exe in this regard.


Martin