How to run Java program in F96-CE4?

[vtpup]

Beginner class question here.... I'm trying to run this:

https://sourceforge.net/projects/imaget ... converter/

What I tried so far in F96 CE-4 (computer in sig):

1.) Download that ImagetoGerberConverter .jar

2.) Install Java: PPM>Install Applications>Choose an SFS File>Java-8U251-x64.sfs

3.) Load the SFS

4.) Click on the program -- nothing

5.) Open terminal, type javaiftest

"which java: Java is not installed."

(I did also try making the image to gerber .jar executable, but no difference...)

Thanks fo any help.

[bigpup]

I loaded the java SFS you talk about. Got the one offered in Quickpet fossa->Net (it is the same java sfs you say you got loaded)
After it loaded it asked if I wanted to run it.
Clicked on run.
A setup opened with a lot of options for java, I just clicked on OK to close it. So it is using settings that were already set.

After you download the program file ImageToGerberLite.jar (this is what the download on that web site link offered to me)

You need to give it exec permission.

then left click on it to run it.

Maybe you need to run that setup for java to get it working

Maybe that java sfs is not really loaded.
I did those two terminal commands for java and got all kinds of return info.
.

Screenshot(1).jpg (45.33 KiB) Viewed 1412 times

[vtpup]

Thanks BigPup. If I follow your steps in F96-CE4, I get the Java SFS downloaded, and the question do I want to RUN it, I click run, but then I don't get a Setup running with options. Nothing happens.

So I don't think Java is actually installed, even though the SFS seems to have loaded.

I'm wondering if it is a F96-CE4 problem. Unfortunately this new laptop doesn't function well with regular Fossapup.

[vtpup]

I was able to run regular Fossapup64 (not F96-CE4) by adding a USB mouse and a USB Wifi dongle to my laptop. I could then install java (which went well, and DID present the setup screen) and then run the Image to Gerber Converter without a problem.

So installing Java seems to be a problem specific to my instance of F96-CE4.

I'm going to bring this up on the F96 CE rev 4 forum thread, since it might be a bug.

[rockedge]

@vtpup I looked back at how I installed openjdk-21 and openjre-21 (and openjdk-11) on F96-CE_4 which I have installed to run Vassal

I used the PPM. Searched for openjdk and installed:

• openjdk-21-jdk_21.0.4+7

• openjdk-21-jdk-headless_21.0.4+7

• openjdk-21-jre_21.0.4+7

• openjdk-21-jre-headless_21.0.4+7

Not sure that the headless versions are needed, I'll have to look back in time to see why I did install them unless it was throw the noodles against the wall and see what sticks methodology.

Vassal running:

Screenshot(78).jpg (21.54 KiB) Viewed 1361 times

Screenshot(79).jpg (44.62 KiB) Viewed 1361 times

[mikewalsh]

@vtpup :-

Hiya, Steve.

I can't speak for open-jre/jdk. Never had any success with it, so I gave up on it long ago......and have always used Java itself. (BTW: that Java SFS package is at least 20 releases behind. Just sayin'.)

Java is one of those rare beasts. Just installing it ain't enough. That won't cut the mustard; nothing less than an OS re-boot will persuade it to admit it's actually installed, on your system, and ready & available for use.

I use rerwin's oldJavaInfo utility package. I load - or otherwise install - Java itself. I then install the JavaInfo utility.....which also installs the Control Panel.

Once those are done & dusted, I click on the MenuEntry (under Utility) for 'Java Control Panel'. This will tell you the installed version, and allow adjusting some settings for it. However; on a 'first run' after installing/loading it, it always comes up with summat like "A version of Java is partly installed on your system. Please re-start your OS to complete the installation...", or similar.

I have to assume that a re-boot sets up a bunch of sym-links, or allows a config file to be updated, or.....well; you get the drift. After a re-boot - even here in Linux, where such things aren't usually needed - everything is "tickety-boo".

That's always been my experience.

===================================

If you visit my Google Drive a/c, here:-

https://drive.google.com/drive/folders/ ... sp=sharing

....you'll always find a fairly up-to-date pair of Java builds for both 32- and 64-bit. You will also find Richard Erwin's 'javaif' utility package. No 'arches' here; it's just a script. I mirrored it to make sure there was always a copy available to the community, since it's never failed to work for me.

'Javaif' loads the 'Control Panel' as a by-product of whatever else it does.

Mike.

[rockedge]

Yes definitely reboot before you use it when installed from the PPM!!!

I forgot to mention that important step.

[bigpup]

Thanks BigPup. If I follow your steps in F96-CE4, I get the Java SFS downloaded, and the question do I want to RUN it, I click run, but then I don't get a Setup running with options. Nothing happens.

So I don't think Java is actually installed, even though the SFS seems to have loaded.

I'm wondering if it is a F96-CE4 problem. Unfortunately this new laptop doesn't function well with regular Fossapup.

What I posted about getting the program to work for me was doing it in my install F96-CE_4

Is the java sfs located in /mnt/home/?

Did you load it by using SFS load?

[vtpup]

@vtpup I looked back at how I installed openjdk-21 and openjre-21 (and openjdk-11) on F96-CE_4 which I have installed to run Vassal

I used the PPM. Searched for openjdk and installed:

• openjdk-21-jdk_21.0.4+7

• openjdk-21-jdk-headless_21.0.4+7

• openjdk-21-jre_21.0.4+7

• openjdk-21-jre-headless_21.0.4+7

Not sure that the headless versions are needed, I'll have to look back in time to see why I did install them unless it was throw the noodles against the wall and see what sticks methodology.

Vassal running:
Screenshot(78).jpg
Screenshot(79).jpg

Thanks Kindly, Rockedge. This worked for me!

FYI the JRE and headless versions all get automatically installed when you choose the first openjdk-21 file and install it.

[vtpup]

@vtpup :-

Hiya, Steve.

I can't speak for open-jre/jdk. Never had any success with it, so I gave up on it long ago......and have always used Java itself. (BTW: that Java SFS package is at least 20 releases behind. Just sayin'.)

Java is one of those rare beasts. Just installing it ain't enough. That won't cut the mustard; nothing less than an OS re-boot will persuade it to admit it's actually installed, on your system, and ready & available for use.

I use rerwin's oldJavaInfo utility package. I load - or otherwise install - Java itself. I then install the JavaInfo utility.....which also installs the Control Panel.

Once those are done & dusted, I click on the MenuEntry (under Utility) for 'Java Control Panel'. This will tell you the installed version, and allow adjusting some settings for it. However; on a 'first run' after installing/loading it, it always comes up with summat like "A version of Java is partly installed on your system. Please re-start your OS to complete the installation...", or similar.

I have to assume that a re-boot sets up a bunch of sym-links, or allows a config file to be updated, or.....well; you get the drift. After a re-boot - even here in Linux, where such things aren't usually needed - everything is "tickety-boo".

That's always been my experience.

===================================

If you visit my Google Drive a/c, here:-

https://drive.google.com/drive/folders/ ... sp=sharing

....you'll always find a fairly up-to-date pair of Java builds for both 32- and 64-bit. You will also find Richard Erwin's 'javaif' utility package. No 'arches' here; it's just a script. I mirrored it to make sure there was always a copy available to the community, since it's never failed to work for me.

'Javaif' loads the 'Control Panel' as a by-product of whatever else it does.

Mike.

Wow thanks Mike. That sounds complicated to me. Since Rockedge's suggestion above worked, I guess that's enough for what I needed it (temporarily) for. I do appreciate your always informative solutions! Still using a lot of your portables, day to day....

[vtpup]

Thanks BigPup. If I follow your steps in F96-CE4, I get the Java SFS downloaded, and the question do I want to RUN it, I click run, but then I don't get a Setup running with options. Nothing happens.

So I don't think Java is actually installed, even though the SFS seems to have loaded.

I'm wondering if it is a F96-CE4 problem. Unfortunately this new laptop doesn't function well with regular Fossapup.

What I posted about getting the program to work for me was doing it in my install F96-CE_4

Is the java sfs located in /mnt/home/?

Did you load it by using SFS load?

Yes, thanks Bigpup, I did have the .sfs located in /mnt/home. I originally installed it by the exact steps I gave, and that automatically puts it in /mnt/home, and also sets it up in Boot manager as an automatically booted sfs, and finally also asks you if you want to load it right now. Which I answered yes to. When that failed to start Java, I did also check the boot manager and /mnt/home to verify, then rebooted and tried to run the Gerber application again. No go. I then tried in terminal

Code: Select all

javaiftest

which told me java wasn't present. So I feel like I exhausted all possibilities re the .sfs.

As also mentioned, a reboot into regular Fossapup64 and load of the same java.sfs went via BootManager without a hitch and I was easily able to open the Gerber app.

I can try again to get it going in F96-CE4, just to absolutely be sure, since yo got it going in the same OS. I don't like mysteries!

[vtpup]

Bigpup, see above. Just to try it again, I removed Rockedge's PPM installed Java. Rebooted. Went through the whole process of trying to install the Java sfs again. No go.

Yup it was in /mnt/home
Yup it was listed in the BootManager as loaded.
Yup I rebooted again and tried running a java program again and also checked for it via "javaiftest" in terminal again, with same negative result. I'm pretty much ready to give up on it.

Back to the PPM installed Java from Ubuntu repo. Thanks for trying to help!

[mow9902]

I'm not entirely sure what this issue is about - but I happily run java apps using F96-CE4

(a) In /mnt/home I currently have a folder jre1.8.0_431 containing the most recent JRE environment.
(b) I also have this symlinked as java in /mnt/home
(c) In ~/root/my-applications I have a folder named /bin and inside the ~/root/my-applications/bin folder I have a symlink pointing to /mnt/home/java/bin/java
(d) The default 'run action' for a .jar file is set as java -jar "$@"

So, when I click on a java app (jar file) it simply loads the JRE pointed to by the symlink. So, I can actually run different versions of JRE by swapping the symlink as required.

Not sure if this helps - but I have been using this successfully for quite some time.

[rockedge]

@mow9902 Wow...I like your method to run Java!

[mow9902]

I'd be interested to see if it works the same for other users of F96-CE4. Did you try it?

[mikewalsh]

@mow9902 / @rockedge :-

I'm kinda partway there. I have a pair of external "current" builds of Java, sym-linked into every Pup's /opt (depending on arch). Hadn't thought of the other thing you mentioned, about the link to /java/bin/java.

I'll have to give that a try; I'm ALL for automation wherever possible, 'cos that's what computers are about, aren't they?

Do I take it you keep all your Java apps in ~/my-applications/bin?

Mike.

[rockedge]

Do I take it you keep all your Java apps in ~/my-applications/bin?

Yes I tend to use ~/my-applications for the Java applications themselves.

[mikewalsh]

Do I take it you keep all your Java apps in ~/my-applications/bin?

Yes I tend to use ~/my-applications/bin for the Java applications themselves.

@rockedge :-

Mm. That's the difference between us, y'see. I prefer slightly more manual control over things..!

I just 'install' Java apps in the normal way, though from time to time intermediate scripts are needed for 'cd'-ing into the app directory. That's always been a fact of life with Java; summat to do with the way the apps are coded to function, I guess......and where they tend to look for stuff.

I have external set-ups for YAD, ffmpeg, Fred's rshift tray utility AND Java. Each has scripts set-up to give me a Menu entry for a wee 'linker' GUI that lets me link OR unlink any of these from the system at any time. Like this:-

Just personal choice. I like my GUIs; what can I say?

Mike.

[rockedge]

I'd be interested to see if it works the same for other users of F96-CE4. Did you try it?

Yes!! I did as you described but only symlinked from /mnt/sdc1/jdk-23.0.1/bin/java location to /root/my-applications/bin/java and it works well.

[mow9902]

@rockedge
Glad to hear it works for others as well. Makes it real simple to upgrade JRE when required, and keeps JRE programs wherever you want.

@mikewalsh
No - actually, I keep all of my applications (including java apps) in the ~/my-applications directory. In the ~/my-applications/bin directory I only keep extra executables which aren't already provided for some reason, or if I want to 'replace/ the provided version with a different version by replacing the provided version with a symlink to my version in ~/my-applications/bin

[rockedge]

@mikewalsh
I meant also ~/my-applications not the /bin for the java applications themselves.

I updated the previous post to reflect that

[Jasper]

@vtpup

Have you resolved your issue?