Loading images from jars for Swing HTML

Question

While this answer works to load images from Jar files for ImageIcons, I cannot seem to get the right path for images referenced in Swing HTML.

This displays an image in the Swing HTML when the resources are not bundled into a jar:

new JLabel("<html><table cellpadding=0><tr><td><img src='file:icons/folder_link.png'></td></tr><tr><td>100</td></tr></table></html>") );

Inside of the jar, the image can be successfully referenced (and displayed) into an ImageIcon:

Icon topIcon = new ImageIcon( getClass().getResource("icons/folder_link.png" ) );

However, my attempt to use the getResource technique for Swing HTML doesn't work.

String p = getClass().getResource("icons/folder_link.png" ).getPath();
new JLabel("<html><table cellpadding=0><tr><td><img src='" + p + "'></td></tr><tr><td>100</td></tr></table></html>") );

What's the secret?

score 16 · Accepted Answer · answered Jun 16 '11 at 14:35

16

Without actually having tried it, I would assume that the HTML renderer can access your image if you include the resource URL in your HTML code:

String p = getClass().getResource("icons/folder_link.png" ).toString();
new JLabel("<html><table cellpadding=0><tr><td><img src='" + p + "'></td></tr><tr><td>100</td></tr></table></html>") );

answered Jun 16 '11 at 14:35

jarnbjo

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Also, _don't forget to wrap the url in apostrophes_ (like me). Strangely enough, without apostrophes it worked in eclipse but not when bundled in a jar. – Snozzlebert Sep 26 '17 at 09:38

score 9 · Answer 2 · edited Jun 16 '11 at 14:41

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URL is the secret

Try this mate:

URL p = getClass().getResource("icons/folder_link.png" );
new JLabel("<html><table cellpadding=0><tr><td><img src='" + p + "'></td></tr><tr><td>100</td></tr></table></html>") );

Then you could also do this:

Icon topIcon = new ImageIcon(p);

and then set this icon as the icon for your JLabel if you want to do that!

edited Jun 16 '11 at 14:41

Martijn Courteaux

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answered Jun 16 '11 at 14:36

gotomanners

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Your answer converts the URL object toString(). – jedierikb Jun 16 '11 at 18:26

score 6 · Answer 3 · edited May 23 '17 at 10:29

6

Answer expanded and moved to Is it possible/how to embed and access HTML Files in a JAR?

edited May 23 '17 at 10:29

Community

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answered Jun 16 '11 at 14:53

Andrew Thompson

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Waldheinz · Answer 4 · 2011-06-17T07:34:26.927

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Because even the original demo from Sun for using HTML in Swing does not embed the images in HTML (for generating buttons with image icons), I doubt that there is even support for displaying images in place. I remember reader "limited subset of HTML" somewhere, but can't find a reference right now.

Edit: Please see Andrew's comment and answer, it really works.

edited Jun 17 '11 at 07:34

answered Jun 16 '11 at 14:42

Waldheinz

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"I doubt that there is even support for displaying images in place." While the `JEditorPane` will only display a limited sub-set of HTML with simple CSS - you are way off track there. See my example. – Andrew Thompson Jun 17 '11 at 01:50

Loading images from jars for Swing HTML

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