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POHow do I list the files inside a JAR file?
 

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  1. POHow do I list the files inside a JAR file?
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    <p>I have this code which reads all the files from a directory.</p> <pre><code> File textFolder = new File("text_directory"); File [] texFiles = textFolder.listFiles( new FileFilter() { public boolean accept( File file ) { return file.getName().endsWith(".txt"); } }); </code></pre> <p>It works great. It fills the array with all the files that end with ".txt" from directory "text_directory".</p> <p>How can I read the contents of a directory in a similar fashion <strong>within</strong> a JAR file? </p> <p>So what I really want to do is, to list all the images inside my JAR file, so I can load them with: </p> <pre><code>ImageIO.read(this.getClass().getResource("CompanyLogo.png")); </code></pre> <p>(That one works because the "CompanyLogo" is "hardcoded" but the number of images inside the JAR file could be from 10 to 200 variable length.) </p> <p><strong>EDIT</strong></p> <p>So I guess my main problem would be: How to know the <strong>name of the JAR file</strong> where my main class lives?</p> <p>Granted I could read it using <code>java.util.Zip</code>.</p> <p>My Structure is like this:</p> <p>They are like:</p> <pre><code>my.jar!/Main.class my.jar!/Aux.class my.jar!/Other.class my.jar!/images/image01.png my.jar!/images/image02a.png my.jar!/images/imwge034.png my.jar!/images/imagAe01q.png my.jar!/META-INF/manifest </code></pre> <p>Right now I'm able to load for instance "images/image01.png" using: </p> <pre><code> ImageIO.read(this.getClass().getResource("images/image01.png)); </code></pre> <p>But only because I know the file name, for the rest I have to load them dynamically.</p>
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    1. COJust a thought - why not zip/jar images into a separate file and read the entries in it from your class in another jar?
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    2. COBecause it would need an "extra" step for distribution/installation. :( You know, end users.
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    3. COWell, I might be mistaken but jars can be embedded inside other jars. The one-jar(TM) packaging solution http://www.ibm.com/developerworks/java/library/j-onejar/ works on this basis. Except, in your case you do not require the ability load classes.
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