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[java] The dreaded JARs! (Resource loading question)

Started by HopeDagger Jul 6, 2006 at 11:28 PM 2 replies 1k views

Original Post

Jul 6, 2006 at 11:28 PM

Me again. [smile] I have an applet that needs to load a variety of images from a JAR archive. Unfortunately, these puppies are refusing to be accessed. Here's what I've tried already in an attempt to load the images:


		Image img = parentApplet.getImage( parentApplet.getClass().getClassLoader().getResource("Data/Graphics&#47;"+folder+"&#<span class="java-number">47</span>;"</span>+key+<span class="java-literal">".png"</span>) );

<span class="java-comment">// and..</span>

		Image img = parentApplet.getImage( parentApplet.getCodeBase(), <span class="java-literal">"Data&#<span class="java-number">47</span>;Graphics&#<span class="java-number">47</span>;"</span>+folder+<span class="java-literal">"&#<span class="java-number">47</span>;"</span>+key+<span class="java-literal">".png"</span> );


</pre></div><!--ENDSCRIPT-->

When I simply provide the data WITHOUT a JAR file, simply placed in the same directory, it works beautifully, so I don't think it's a directory issue. It &#111;nly likes to bork when I package the information in a JAR archive. The rest of the applet loads just fine.

I'm wide open to ideas, and as always: thanks in advance. You Java folks rock. [smile]


EDIT: Oh, darn. Pretend those warped HTML codes GD.NET converted are really forward slashes.</code></pre></div>

Addictman

Jul 7, 2006 at 1:44 AM

Hi!

You're saying your images are within a jar file? If so, is it the same jar archive that contains the code that tries to load them, or is it a different jar file?

Take a look at this thread:

http://www.gamedev.net/community/forums/topic.asp?topic_id=398094

Let us know whether this solves your problem or not. Remember that when you are trying to load things *from* a jar, the "current directory" is the classpath, and not necessarily the current directory (the directory where the jar you call things from is located).

markr

Jul 7, 2006 at 2:32 AM

You may wish to try using a path with a leading "/" on it. Remember that JAR filenames are probably case sensitive.

I've looked at some of my code (which is J2ME Midlet not an Applet), and that's what I'm doing. From memory, I think that if you omit the leading "/", it probably doesn't work.

What exception are you getting?

Mark

HopeDagger

Jul 7, 2006 at 11:01 AM

@Addictman: That did the trick. Thanks a lot for the linkage. [smile]

@Mark: It wasn't the leading forward slash, but your help is still appreciated. (and your rating is alread maxed, so 'thanks' will have to suffice, hehe)

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