How to includes all images in jar file using eclipse

Question

I made a java application and bundled all classes in a jar file. When I run the project from eclipse, my application is running successfully. But when I try to run my .jar file, I am not getting the icons used by my application. In the code I get my icons from images directory present in project folder. How can I present these image files to the end user when using a jar?

I am loading the image like so:

 final public ImageIcon iReport=new ImageIcon("images/Report.png");

I have also tried

final public ImageIcon iquit=new ImageIcon(getClass().getResource("images/quit.png"));

and

final public ImageIcon iquit=new ImageIcon(getClass().getResource("/images/quit.png"));

But this results in an error:

Exception in thread "main" java.lang.NullPointerException
at javax.swing.ImageIcon.<init>(Unknown Source)

Show us some code? How are loading them that it works sometimes but not others? — Adam Batkin, Jun 16 '11 at 13:55
You should review how you access the image resource in your code. Make sure its a relative url accessible within the jar file! — gotomanners, Jun 16 '11 at 13:55

score 11 · Accepted Answer · answered Jun 16 '11 at 14:06

11

You need to get it from the classpath instead of from the local disk file system.

Assuming that images is actually a package and that this package is inside the same JAR as the current class, then do so:

final public ImageIcon iReport = 
    new ImageIcon(getClass().getResource("/images/Report.png"));

answered Jun 16 '11 at 14:06

BalusC

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Then the path is plain wrong. Do you understand when you need to use the leading slash `/`? Do you understand how relative paths work? – BalusC Jun 16 '11 at 14:19
Ok thanks,I get it....but now I am getting different problem ,it all works fine using eclipse but doesnt work after making jar....actually jar file is not running. – sAaNu Jun 16 '11 at 17:44
Where exactly are you calling this line? In the class inside the JAR? Are you sure that the image is in a package called `images`? – BalusC Jun 16 '11 at 17:49
Yes images are in package images,and jar file also content it but my jar file is not executing ....how could it be? – sAaNu Jun 16 '11 at 17:56

score 2 · Answer 2 · answered Jun 16 '11 at 14:07

The files in jar files are treated as "Resources". you need to access them as a classpath resource, regular File access methods does not work there.

Try this:

final public ImageIcon iReport = (new ImageIcon(getClass().getResource("images/Report.png")));

score 1 · Answer 3 · answered Jun 27 '13 at 15:03

1

I know this was asked long ago, but it might help others with the same problem, like me. I was already using getClass().getResource("..."), but the resource didn't get exported with .jar file. I solved the problem by refreshing the 'Resources' folder, and its every subfolder.

answered Jun 27 '13 at 15:03

Velja

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I hope this [answer](http://stackoverflow.com/a/9278270/1057230) will definitely help you :-) More info can be found in this [answer](http://stackoverflow.com/a/9866659/1057230) – nIcE cOw Jul 14 '13 at 16:40

score 1 · Answer 4 · edited Oct 09 '13 at 09:01

1

100% works

final public ImageIcon iReport = new ImageIcon(getClass().getResource("/Report.png"));

Don't forget about "/" at path for image.

edited Oct 09 '13 at 09:01

ppeterka

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answered Oct 09 '13 at 08:38

SorcerOK

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How to includes all images in jar file using eclipse

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