I have managed to compare the jar files and all my images are in both.
However, the later jar file includes all sorts of extraneous files which
are in the project but not referenced by any of my java source files.
the listing includes separate lines for the directory name too.
Judi R
On 17/09/2019 16:25, Thomas Wolf wrote:
The java development kit comes with the 'jar' command (the example of
how to do it uses that; on Unix machines the "diff" command lets you
view differences between two files). from a command-prompt, you would
type "jar tf theNameOfYourWorkingJarFile" to see a listing of all the
classes in that jar file.
Hope that helps,
Tom
On Tue, Sep 17, 2019 at 11:20 AM Judi Rastall <j...@rastall.com
<mailto:j...@rastall.com>> wrote:
Tom,
How do I look at the contents of a jar file? Is there a jar file
viewer or decompiler?
Judi
On 17/09/2019 16:03, Thomas Wolf wrote:
Judi,
I would compare the contents of your jar files - the one that
works vs. the one that now doesn't work. i.e. jar tf
workginJarFile.jar > l1; jar tf nonWorkingJarFile.jar > l2; diff
l1 l2. This might help you see if, for whatever reason, the
images didn't make it into your current jar file.
Good luck.
Tom
On Tue, Sep 17, 2019 at 9:59 AM Judi Rastall <j...@rastall.com
<mailto:j...@rastall.com>> wrote:
I am working on an application that needs to load various
images and there seem to be a million different ways to do
this in the examples I have found online. The method I have
found to work most reliably until recently is this:
LogoLabel.setIcon(new
javax.swing.ImageIcon(getClass().getResource("Images/WF5_200.gif")));
This is part of the setting up of a JLabel within a JPanel
and it runs perfectly well within NetBeans. I thought I was
doing quite well and have managed to call other functions
from JButtons in the main app.
At various times I have built (compiled) the project to a jar
file and have tested it to see that it runs OK under the
runtime engine. So far so good. However, in recent weeks the
jar file has stopped running. It builds with no error
messages but if I run it from my desktop shortcut the cursor
shows "waiting" for a couple of seconds and then reverts to
normal and nothing else happens. If I run it from the command
line within the \dist\ directory I can see an "Unknown
Source" error message followed by a pointer to the line of
code above that loads the gif file. It appears to me that the
compile/build function cannot interpret the file location. I
have tried placing a copy of the image in the same directory
as the source java file (and removing the images\ path) but
still no joy.
Now here's the strange thing. Until the end of August it
would build and run OK. I was able to retrieve the previous
jar file from my backup and it still runs perfectly well.
I cannot understand what has changed and would be grateful
for any suggestions as to where I might look to solve this
very frustrating problem.
With thanks,
Judi R
--
tjw...@gmail.com <mailto:tjw...@gmail.com>
http://landofwolf.blogspot.com/
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http://landofwolf.blogspot.com/
