[Jxplorer-users] regarding installing JXplorer on RedHat Linux

Discussion:

Haricharan Ramachandra

2006-08-03 18:25:41 UTC

Hi All

I am trying to install JXplorer on RedHat Linux 9. I downloaded
JXv3.1_install_linux.bin from www.jxplorer.org. I followed the instructions
in the read me onthe website and did the following

1. I downloaded JXv3.1_install_linux.bin from the website and placed it
in folder in my linux machine (One observation here is that when I click on
the download link instead of asking for saving the bin file to my local
machine, the web site opens a text file online, I had to right click to save
it to my local drive.

2. I used chmod 777 command to change the permissions

3. I ran sh ./JXv3.1_install_linux.bin from the folder where i had the
file saved in my Linux machine.

When i did it i got the following exception message and the install did
not go through. Please advice and thanks for you help in advance.

Please find the exception below

[***@localhost ftp]# sh ./JXv3.1_install_linux.bin
Preparing to install...
Extracting the installation resources from the installer archive...
Configuring the installer for this system's environment...

Launching installer...

Warning: -Xmx50331648 not understood. Ignoring.
Warning: -Xms16777216 not understood. Ignoring.
Invocation of this Java Application has caused an InvocationTargetException.
This application will now exit. (LAX)

Stack Trace:
java.lang.NoClassDefFoundError: while resolving class: ZeroGe
at java.lang.VMClassLoader.resolveClass(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.Class.initializeClass() (/usr/lib64/libgcj.so.5.0.0)
at _Jv_ResolvePoolEntry(java.lang.Class, int)
(/usr/lib64/libgcj.so.5.0.0)
at ZeroGd.<clinit>() (Unknown Source)
at java.lang.Class.initializeClass() (/usr/lib64/libgcj.so.5.0.0)
at _Jv_ResolvePoolEntry(java.lang.Class, int)
(/usr/lib64/libgcj.so.5.0.0)
at com.zerog.ia.installer.LifeCycleManager.a(boolean) (Unknown Source)
at com.zerog.ia.installer.LifeCycleManager.b(java.lang.String[]) (Unknown
Source)
at com.zerog.ia.installer.LifeCycleManager.a(java.lang.String[]) (Unknown
Source)
at com.zerog.ia.installer.Main.main(java.lang.String[]) (Unknown Source)
Caused by: java.lang.ClassNotFoundException: com.apple.mrj.MRJOSType not
found in [file:/tmp/install.dir.8608/InstallerData/,
file:/tmp/install.dir.8608/InstallerData/installer.zip,
file:JXv3.1_install_java.jar, file:/usr/share/java/libgcj-3.4.3.jar,
file:./, core:/]
at java.net.URLClassLoader.findClass(java.lang.String)
(/usr/lib64/libgcj.so.5.0.0)
at gnu.gcj.runtime.VMClassLoader.findClass(java.lang.String)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.ClassLoader.loadClass(java.lang.String, boolean)
(/usr/lib64/libgcj.so.5.0.0)
at _Jv_FindClass(_Jv_Utf8Const, java.lang.ClassLoader)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.Class.forName(java.lang.String, boolean,
java.lang.ClassLoader) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_BytecodeVerifier.verify_instructions_0()
(/usr/lib64/libgcj.so.5.0.0)
at _Jv_VerifyMethod(_Jv_InterpMethod) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_PrepareClass(java.lang.Class) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_WaitForState(java.lang.Class, int) (/usr/lib64/libgcj.so.5.0.0)
at java.lang.VMClassLoader.linkClass0(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.VMClassLoader.resolveClass(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
...9 more

thanks
Hari

Chris Betts

2006-08-04 07:49:30 UTC

Permalink

Hi Hari,

the first thing to check is that you have a recent version of
java installed and working - you should be able to type 'java -
version' at the command line and get a 'version 1.4.1' message back
(or similar).

otherwise I'm afraid I'm not much of a linux expert - you can
check some of the past posting about JXplorer on Linux at http://
sourceforge.net/mail/?group_id=55394 , or you may have more luck
installing the .tar.gz deploy file and running the shell script
(downloadable at: http://sourceforge.net/project/showfiles.php?
group_id=55394 ).

cheers,

Chris

Post by Haricharan Ramachandra
Hi All
I am trying to install JXplorer on RedHat Linux 9. I downloaded
JXv3.1_install_linux.bin from www.jxplorer.org. I followed the
instructions
in the read me onthe website and did the following
1. I downloaded JXv3.1_install_linux.bin from the website and placed it
in folder in my linux machine (One observation here is that when I click on
the download link instead of asking for saving the bin file to my local
machine, the web site opens a text file online, I had to right
click to save
it to my local drive.
2. I used chmod 777 command to change the permissions
3. I ran sh ./JXv3.1_install_linux.bin from the folder where i had the
file saved in my Linux machine.
When i did it i got the following exception message and the install did
not go through. Please advice and thanks for you help in advance.
Please find the exception below
Preparing to install...
Extracting the installation resources from the installer archive...
Configuring the installer for this system's environment...
Launching installer...
Warning: -Xmx50331648 not understood. Ignoring.
Warning: -Xms16777216 not understood. Ignoring.
Invocation of this Java Application has caused an
InvocationTargetException.
This application will now exit. (LAX)
java.lang.NoClassDefFoundError: while resolving class: ZeroGe
at java.lang.VMClassLoader.resolveClass(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.Class.initializeClass() (/usr/lib64/libgcj.so.5.0.0)
at _Jv_ResolvePoolEntry(java.lang.Class, int)
(/usr/lib64/libgcj.so.5.0.0)
at ZeroGd.<clinit>() (Unknown Source)
at java.lang.Class.initializeClass() (/usr/lib64/libgcj.so.5.0.0)
at _Jv_ResolvePoolEntry(java.lang.Class, int)
(/usr/lib64/libgcj.so.5.0.0)
at com.zerog.ia.installer.LifeCycleManager.a(boolean) (Unknown Source)
at com.zerog.ia.installer.LifeCycleManager.b(java.lang.String[]) (Unknown
Source)
at com.zerog.ia.installer.LifeCycleManager.a(java.lang.String[]) (Unknown
Source)
at com.zerog.ia.installer.Main.main(java.lang.String[]) (Unknown Source)
com.apple.mrj.MRJOSType not
found in [file:/tmp/install.dir.8608/InstallerData/,
file:/tmp/install.dir.8608/InstallerData/installer.zip,
file:JXv3.1_install_java.jar, file:/usr/share/java/libgcj-3.4.3.jar,
file:./, core:/]
at java.net.URLClassLoader.findClass(java.lang.String)
(/usr/lib64/libgcj.so.5.0.0)
at gnu.gcj.runtime.VMClassLoader.findClass(java.lang.String)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.ClassLoader.loadClass(java.lang.String, boolean)
(/usr/lib64/libgcj.so.5.0.0)
at _Jv_FindClass(_Jv_Utf8Const, java.lang.ClassLoader)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.Class.forName(java.lang.String, boolean,
java.lang.ClassLoader) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_BytecodeVerifier.verify_instructions_0()
(/usr/lib64/libgcj.so.5.0.0)
at _Jv_VerifyMethod(_Jv_InterpMethod) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_PrepareClass(java.lang.Class) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_WaitForState(java.lang.Class, int) (/usr/lib64/libgcj.so.
5.0.0)
at java.lang.VMClassLoader.linkClass0(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.VMClassLoader.resolveClass(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
...9 more
thanks
Hari
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Hervé BOUTEMY

2006-08-04 18:35:27 UTC

Permalink

Hi Hari,

I'm not a JXplorer expert, but a Linux user : as it seems more a problem with
Linux than with JXplorer, I think this is what is most needed.

Reading the stacktrace, I find "/usr/lib64/libgcj.so.5.0.0" : you're using a
64 bits version of Linux ? That would explain much things : 64 bits support
on Linux is not as good as 32 bits (where I don't have *any* problem for
years now).

I found this bug report :
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6345079

It seems that ZeroG installer shows a bug in Sun's JVM for 64 bits Linux.

Then the best thing you'll have to do in my opinion (after voting for this
bug) is to try tar.gz installer, as suggested by Chris, hoping that JXplorer
won't show another JVM's bug...

regards,

Hervé

Post by Chris Betts
Hi Hari,
the first thing to check is that you have a recent version of
java installed and working - you should be able to type 'java -
version' at the command line and get a 'version 1.4.1' message back
(or similar).
otherwise I'm afraid I'm not much of a linux expert - you can
check some of the past posting about JXplorer on Linux at http://
sourceforge.net/mail/?group_id=55394 , or you may have more luck
installing the .tar.gz deploy file and running the shell script
(downloadable at: http://sourceforge.net/project/showfiles.php?
group_id=55394 ).
cheers,
Chris

Post by Haricharan Ramachandra
Hi All
I am trying to install JXplorer on RedHat Linux 9. I downloaded
JXv3.1_install_linux.bin from www.jxplorer.org. I followed the instructions
in the read me onthe website and did the following
1. I downloaded JXv3.1_install_linux.bin from the website and placed it
in folder in my linux machine (One observation here is that when I click on
the download link instead of asking for saving the bin file to my local
machine, the web site opens a text file online, I had to right click to save
it to my local drive.
2. I used chmod 777 command to change the permissions
3. I ran sh ./JXv3.1_install_linux.bin from the folder where i had the
file saved in my Linux machine.
When i did it i got the following exception message and the install did
not go through. Please advice and thanks for you help in advance.
Please find the exception below
Preparing to install...
Extracting the installation resources from the installer archive...
Configuring the installer for this system's environment...
Launching installer...
Warning: -Xmx50331648 not understood. Ignoring.
Warning: -Xms16777216 not understood. Ignoring.
Invocation of this Java Application has caused an
InvocationTargetException.
This application will now exit. (LAX)
java.lang.NoClassDefFoundError: while resolving class: ZeroGe
at java.lang.VMClassLoader.resolveClass(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.Class.initializeClass() (/usr/lib64/libgcj.so.5.0.0)
at _Jv_ResolvePoolEntry(java.lang.Class, int)
(/usr/lib64/libgcj.so.5.0.0)
at ZeroGd.<clinit>() (Unknown Source)
at java.lang.Class.initializeClass() (/usr/lib64/libgcj.so.5.0.0)
at _Jv_ResolvePoolEntry(java.lang.Class, int)
(/usr/lib64/libgcj.so.5.0.0)
at com.zerog.ia.installer.LifeCycleManager.a(boolean) (Unknown Source)
at com.zerog.ia.installer.LifeCycleManager.b(java.lang.String[]) (Unknown
Source)
at com.zerog.ia.installer.LifeCycleManager.a(java.lang.String[]) (Unknown
Source)
at com.zerog.ia.installer.Main.main(java.lang.String[]) (Unknown Source)
com.apple.mrj.MRJOSType not
found in [file:/tmp/install.dir.8608/InstallerData/,
file:/tmp/install.dir.8608/InstallerData/installer.zip,
file:JXv3.1_install_java.jar, file:/usr/share/java/libgcj-3.4.3.jar,
file:./, core:/]
at java.net.URLClassLoader.findClass(java.lang.String)
(/usr/lib64/libgcj.so.5.0.0)
at gnu.gcj.runtime.VMClassLoader.findClass(java.lang.String)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.ClassLoader.loadClass(java.lang.String, boolean)
(/usr/lib64/libgcj.so.5.0.0)
at _Jv_FindClass(_Jv_Utf8Const, java.lang.ClassLoader)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.Class.forName(java.lang.String, boolean,
java.lang.ClassLoader) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_BytecodeVerifier.verify_instructions_0()
(/usr/lib64/libgcj.so.5.0.0)
at _Jv_VerifyMethod(_Jv_InterpMethod) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_PrepareClass(java.lang.Class) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_WaitForState(java.lang.Class, int) (/usr/lib64/libgcj.so.
5.0.0)
at java.lang.VMClassLoader.linkClass0(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.VMClassLoader.resolveClass(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
...9 more
thanks
Hari
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Haricharan Ramachandra

2006-08-04 22:37:59 UTC

Permalink

Thanks Chris,

I checked the Java version and it is Jdk1.4.2 on my machine, i got to know
from Herve that it might be due to the Linux 32/64bit version problem. but
on the download website there is no mantion of 32/64 bit version for the
Linux JXplorer.

thanks
Hari

-----Original Message-----
From: Chris Betts [mailto:***@pegacat.com]
Sent: Friday, August 04, 2006 12:50 AM
To: Haricharan Ramachandra
Cc: jxplorer-***@lists.sourceforge.net; ***@apere.com; Srikanth
T
Subject: Re: [Jxplorer-users] regarding installing JXplorer on RedHat
Linux

Hi Hari,

the first thing to check is that you have a recent version of
java installed and working - you should be able to type 'java -
version' at the command line and get a 'version 1.4.1' message back
(or similar).

otherwise I'm afraid I'm not much of a linux expert - you can
check some of the past posting about JXplorer on Linux at http://
sourceforge.net/mail/?group_id=55394 , or you may have more luck
installing the .tar.gz deploy file and running the shell script
(downloadable at: http://sourceforge.net/project/showfiles.php?
group_id=55394 ).

cheers,

Chris

Post by Haricharan Ramachandra
Hi All
I am trying to install JXplorer on RedHat Linux 9. I downloaded
JXv3.1_install_linux.bin from www.jxplorer.org. I followed the
instructions
in the read me onthe website and did the following
1. I downloaded JXv3.1_install_linux.bin from the website and
placed it
in folder in my linux machine (One observation here is that when I
click on
the download link instead of asking for saving the bin file to my
local
machine, the web site opens a text file online, I had to right
click to save
it to my local drive.
2. I used chmod 777 command to change the permissions
3. I ran sh ./JXv3.1_install_linux.bin from the folder where i
had the
file saved in my Linux machine.
When i did it i got the following exception message and the
install did
not go through. Please advice and thanks for you help in advance.
Please find the exception below
Preparing to install...
Extracting the installation resources from the installer archive...
Configuring the installer for this system's environment...
Launching installer...
Warning: -Xmx50331648 not understood. Ignoring.
Warning: -Xms16777216 not understood. Ignoring.
Invocation of this Java Application has caused an
InvocationTargetException.
This application will now exit. (LAX)
java.lang.NoClassDefFoundError: while resolving class: ZeroGe
at java.lang.VMClassLoader.resolveClass(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.Class.initializeClass() (/usr/lib64/libgcj.so.5.0.0)
at _Jv_ResolvePoolEntry(java.lang.Class, int)
(/usr/lib64/libgcj.so.5.0.0)
at ZeroGd.<clinit>() (Unknown Source)
at java.lang.Class.initializeClass() (/usr/lib64/libgcj.so.5.0.0)
at _Jv_ResolvePoolEntry(java.lang.Class, int)
(/usr/lib64/libgcj.so.5.0.0)
at com.zerog.ia.installer.LifeCycleManager.a(boolean) (Unknown
Source)
at com.zerog.ia.installer.LifeCycleManager.b(java.lang.String[])
(Unknown
Source)
at com.zerog.ia.installer.LifeCycleManager.a(java.lang.String[])
(Unknown
Source)
at com.zerog.ia.installer.Main.main(java.lang.String[]) (Unknown
Source)
com.apple.mrj.MRJOSType not
found in [file:/tmp/install.dir.8608/InstallerData/,
file:/tmp/install.dir.8608/InstallerData/installer.zip,
file:JXv3.1_install_java.jar, file:/usr/share/java/libgcj-3.4.3.jar,
file:./, core:/]
at java.net.URLClassLoader.findClass(java.lang.String)
(/usr/lib64/libgcj.so.5.0.0)
at gnu.gcj.runtime.VMClassLoader.findClass(java.lang.String)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.ClassLoader.loadClass(java.lang.String, boolean)
(/usr/lib64/libgcj.so.5.0.0)
at _Jv_FindClass(_Jv_Utf8Const, java.lang.ClassLoader)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.Class.forName(java.lang.String, boolean,
java.lang.ClassLoader) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_BytecodeVerifier.verify_instructions_0()
(/usr/lib64/libgcj.so.5.0.0)
at _Jv_VerifyMethod(_Jv_InterpMethod) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_PrepareClass(java.lang.Class) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_WaitForState(java.lang.Class, int) (/usr/lib64/libgcj.so.
5.0.0)
at java.lang.VMClassLoader.linkClass0(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.VMClassLoader.resolveClass(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
...9 more
thanks
Hari
----------------------------------------------------------------------
---
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Join SourceForge.net's Techsay panel and you'll get the chance to
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Hervé BOUTEMY

2006-08-06 08:48:00 UTC

Permalink

Post by Haricharan Ramachandra
Thanks Chris,
I checked the Java version and it is Jdk1.4.2 on my machine, i got to
know from Herve that it might be due to the Linux 32/64bit version problem.
but on the download website there is no mantion of 32/64 bit version for
the Linux JXplorer.

The 32/64bit version question does not affect JXplorer itself, but Linux and
JVM : programs written in Java (like JXplorer) are not dependant on such
questions, they are dependant on a JVM and its version.
Since you've got a 1.4.2 JVM, the problem is not on the version of the JVM
that JXplorer needs.

Now we can conclude that the bug lies in the JVM : JXplorer can't do anything
about it.
The only hope is that the JVM bug is triggered by the graphical installer
(ZeroG) : if you download .tar.gz version of JXplorer, this installer isn't
there. Perhaps JXplorer itself will work on the buggy JVM...

Please try and let us know.

Hervé

Post by Haricharan Ramachandra
thanks
Hari
-----Original Message-----
Sent: Friday, August 04, 2006 12:50 AM
To: Haricharan Ramachandra
T
Subject: Re: [Jxplorer-users] regarding installing JXplorer on RedHat
Linux
Hi Hari,
the first thing to check is that you have a recent version of
java installed and working - you should be able to type 'java -
version' at the command line and get a 'version 1.4.1' message back
(or similar).
otherwise I'm afraid I'm not much of a linux expert - you can
check some of the past posting about JXplorer on Linux at http://
sourceforge.net/mail/?group_id=55394 , or you may have more luck
installing the .tar.gz deploy file and running the shell script
(downloadable at: http://sourceforge.net/project/showfiles.php?
group_id=55394 ).
cheers,
Chris

Post by Haricharan Ramachandra
Hi All
I am trying to install JXplorer on RedHat Linux 9. I downloaded
JXv3.1_install_linux.bin from www.jxplorer.org. I followed the
instructions
in the read me onthe website and did the following
1. I downloaded JXv3.1_install_linux.bin from the website and
placed it
in folder in my linux machine (One observation here is that when I
click on
the download link instead of asking for saving the bin file to my
local
machine, the web site opens a text file online, I had to right
click to save
it to my local drive.
2. I used chmod 777 command to change the permissions
3. I ran sh ./JXv3.1_install_linux.bin from the folder where i
had the
file saved in my Linux machine.
When i did it i got the following exception message and the
install did
not go through. Please advice and thanks for you help in advance.
Please find the exception below
Preparing to install...
Extracting the installation resources from the installer archive...
Configuring the installer for this system's environment...
Launching installer...
Warning: -Xmx50331648 not understood. Ignoring.
Warning: -Xms16777216 not understood. Ignoring.
Invocation of this Java Application has caused an
InvocationTargetException.
This application will now exit. (LAX)
java.lang.NoClassDefFoundError: while resolving class: ZeroGe
at java.lang.VMClassLoader.resolveClass(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.Class.initializeClass() (/usr/lib64/libgcj.so.5.0.0)
at _Jv_ResolvePoolEntry(java.lang.Class, int)
(/usr/lib64/libgcj.so.5.0.0)
at ZeroGd.<clinit>() (Unknown Source)
at java.lang.Class.initializeClass() (/usr/lib64/libgcj.so.5.0.0)
at _Jv_ResolvePoolEntry(java.lang.Class, int)
(/usr/lib64/libgcj.so.5.0.0)
at com.zerog.ia.installer.LifeCycleManager.a(boolean) (Unknown
Source)
at com.zerog.ia.installer.LifeCycleManager.b(java.lang.String[])
(Unknown
Source)
at com.zerog.ia.installer.LifeCycleManager.a(java.lang.String[])
(Unknown
Source)
at com.zerog.ia.installer.Main.main(java.lang.String[]) (Unknown
Source)
com.apple.mrj.MRJOSType not
found in [file:/tmp/install.dir.8608/InstallerData/,
file:/tmp/install.dir.8608/InstallerData/installer.zip,
file:JXv3.1_install_java.jar, file:/usr/share/java/libgcj-3.4.3.jar,
file:./, core:/]
at java.net.URLClassLoader.findClass(java.lang.String)
(/usr/lib64/libgcj.so.5.0.0)
at gnu.gcj.runtime.VMClassLoader.findClass(java.lang.String)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.ClassLoader.loadClass(java.lang.String, boolean)
(/usr/lib64/libgcj.so.5.0.0)
at _Jv_FindClass(_Jv_Utf8Const, java.lang.ClassLoader)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.Class.forName(java.lang.String, boolean,
java.lang.ClassLoader) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_BytecodeVerifier.verify_instructions_0()
(/usr/lib64/libgcj.so.5.0.0)
at _Jv_VerifyMethod(_Jv_InterpMethod) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_PrepareClass(java.lang.Class) (/usr/lib64/libgcj.so.5.0.0)
at _Jv_WaitForState(java.lang.Class, int) (/usr/lib64/libgcj.so.
5.0.0)
at java.lang.VMClassLoader.linkClass0(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
at java.lang.VMClassLoader.resolveClass(java.lang.Class)
(/usr/lib64/libgcj.so.5.0.0)
...9 more
thanks
Hari
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Sergio Gelato

2006-08-06 21:19:39 UTC

Permalink

Post by Haricharan Ramachandra
I checked the Java version and it is Jdk1.4.2 on my machine, i got to know
from Herve that it might be due to the Linux 32/64bit version problem. but
on the download website there is no mantion of 32/64 bit version for the
Linux JXplorer.

You may have a 1.4.2 VM installed (which one? java.sun.com? Blackdown?
IBM?) but the stack trace clearly indicates that you weren't using that
one but a GNU gcj based version (which is probably Java 1.1, too old for
JXplorer).

That means the ZeroG script is picking the wrong VM. Try setting the
JAVA_HOME environment variable to the base directory of the Java
installation you wish to use before running the installer.

About 32 vs. 64 bits: indeed JXplorer shouldn't care whether the Java VM
is a native amd64 executable or an i386 one. But there *are* amd64 JVMs
out there.