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POJava Annotations don't work with external Jar Files
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copied!<p>So, I'm currently working on a plugin system (plugins are jar files located in a plugins folder) for my command line "operating system". Works fine but the API doesn't.</p> <p>I am using Annotations to get the Plugin main class and the event classes. However, it doesn't seem to find my Annotations.</p> <p>This is what I use to load my plugins:</p> <pre><code>public static void loadPlugin(File file) { try { URL urlList[] = { new File("plugins/" + file.getName()).toURI().toURL() }; URLClassLoader classLoader = new URLClassLoader(urlList); Class<?> pluginclass, eventclass = pluginclass = null; String name, version = name = null; Priority priority = Priority.NORMAL; String[] classes = Utils.getJarClasses(file, "plugin").toArray(new String[] {}); for (String s : classes) { System.out.println(s); Class<?> c = classLoader.loadClass(s); Plugin p = c.getAnnotation(Plugin.class); EventHandler e = c.getAnnotation(EventHandler.class); if (p != null) { System.out.println("not null!"); pluginclass = c; name = p.name(); version = p.version(); priority = p.priority(); } if (e != null) { eventclass = c; } } switch (priority) { case NORMAL: plugins.add(new Class<?>[] { pluginclass, eventclass }); case DEVELOPER_API: apis.add(new Class<?>[] { pluginclass, eventclass }); } print("Loaded Plugin: " + name + " V" + version + " with priority " + priority.toString() + "."); } catch (Exception e) { e.printStackTrace(); } } </code></pre> <p>It's printing out the class it's currently looping through just fine, but <strong>p</strong> and <strong>e</strong> are always null, no matter what. <strong>version</strong> and <strong>name</strong> are always null, too, obviously.</p> <p>My Annotation classes have got <code>@Retention(RetentionPolicy.RUNTIME)</code>, that's the main reason why I'm asking here.</p> <p>I have tested a similar system, just that one didn't use jar files (classes inside of a package, instead) and worked fine.</p> <p>Thanks in advance.</p>

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