Cannot get exported application to run on Ubuntu

hondaman9..

Cannot get exported application to run on Ubuntu

in Integration and Hardware • 1 year ago

After much work I have Processing running on Ubuntu 10.4, and my program running in Processing on Ubuntu (was using Win7). I can run the program, modify it, etc., and now all libraries etc., are functional. I set up an Ubuntu box for this as I want to ultimately provide my program as a stand-alone application on Ubuntu. Before I export my own code as an application I am trying to achieve this with the examples that come with Processing so as to have a known working setup. However, I cannot get any exported applications to work. I am testing with the example program "BrickTower".

I updated the Firefox Java plugin and can get the browser applet to work, but running the exported desktop application gives no response or error. I have tried running it with a double-click and from terminal with sudo prefix in case this was a permissions issue. All to no avail.

In the absence of any error, does anyone have any suggestions as to what's up with this? In Win7 the Applet and desktop application work. I have searched extensively on this topic and have so far have read a lot but nothing speaking to my issue with Ubuntu.

Any suggestions/help is much appreciated.

Replies(4)

monkstone

Re: Cannot get exported application to run on Ubuntu

1 year ago

It has has always worked for me (double click on script or ./BrickTower for script in a console), I can only think it is a permission thing. You could always open a terminal cd to the correct directory ie cd application.linux and try:-

bash -x BrickTower

See what that gives, if indeed it doesn't run application (I would be surprised if it didn't).

hondaman9..

Re: Cannot get exported application to run on Ubuntu

1 year ago

When I try ./BrickTower from the command line I get:

./BrickTower: 4: java: not found

When I try with bash I get:

++ dirname BrickTower
APPDIR=.
java -Djava.library.path=. -cp ./lib/BrickTower.jar:./lib/core.jar BrickTower
BrickTower: line 4: java: command not found

Not quite sure what this means, but perhaps I don't have the correct java installation to run an exported application?

When I check using java -version I get:

The program 'java' can be found in the following packages:

* gcj-4.4-jre-headless

* openjdk-6-jre-headless

* cacao

* gij-4.3

* jamvm

Try: sudo apt-get install <selected package>

Is there a specification for Processing 1.5 that specifies the versions of Java required to run?

Thanks for all the help.

monkstone

Re: Cannot get exported application to run on Ubuntu

1 year ago

You can tell debian systems, and ubuntu is a debian system where to find java using the update-alternatives program.

sudo update-alternatives --config java

Selection    Path                       Priority   Status
------------------------------------------------------------
* 0            /opt/jdk1.7.0_01/bin/java   502       auto mode
1            /opt/jdk1.6.0_26/bin/java   50        manual mode
2            /opt/jdk1.7.0_01/bin/java   502       manual mode

This is what I get because I'm on 64 bit System and have installed (manually) java sdk from oracle. You should use a sdk from oracle for processing, the download of processing includes such an sdk (32 bit) in the java folder, immediately under the processing folder. However it probably pays to have at least java runtime (from oracle) installed independently. The update-alternatives program manages the symbolic links to the java runtime ( and other programs) and provides /usr/bin/java using the selected java.

To install a new alternative:-

sudo update-alternatives --install /usr/bin/java java /opt/jdk1.7.0_01/bin/java 10

The number at the end is required, and sets the priority for auto mode selection

To set an alternative, using the manual mode (overrides priority setting):-

sudo update-alternatives --config java

hondaman9..

Re: Cannot get exported application to run on Ubuntu

1 year ago

Thanks Monkstone for the help. However I get a "no alternatives available" for Java when I try the above.

Nonetheless, on the theory that this was a Java version/completeness/present issue, I reinstalled the OpenJDK Java6 runtime from the Ubuntu Software Center and this seems to have fixed the issue, in that P5 applications now run just fine and as expected.

This begs the question, if I want to send someone my Processing application, how can I be sure they have everything they need on their Linux system to run the program? Is there any way to get an executable file from Processing that has no dependencies that can simply be run?

Thanks for all the help

Top Reply