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POjar-in-jar class loading issue
 

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    <p>i followed the steps described at <a href="https://stackoverflow.com/questions/2706222/create-cross-platform-java-swt-application">Create cross platform Java SWT Application</a> . i create a jar which has a swt_browser.jar containing only my class using swt library. then i added other platrom-specific swt jars. i use the below code to load the swt_browser.jar and the platform specific swt library jar. but somehow the call for loading class SWTBrowser complains :</p> <pre><code>java.lang.ClassNotFoundException: org.eclipse.swt.widgets.Layout </code></pre> <p>can you tell what i am doing wrong?</p> <p>-----code for loading swt jars-------</p> <pre><code> ClassLoader parent = Main.class.getClassLoader(); URL.setURLStreamHandlerFactory(new RsrcURLStreamHandlerFactory(parent)); URL swtBrowserFileUrl = new URL("rsrc:swt_browser.jar"); URL swtFileUrl = new URL("rsrc:" + swtFileName); ClassLoader cl = new URLClassLoader(new URL[]{swtBrowserFileUrl, swtFileUrl}, parent); Method addUrlMethod = URLClassLoader.class.getDeclaredMethod("addURL", URL.class); addUrlMethod.setAccessible(true); addUrlMethod.invoke(cl, swtBrowserFileUrl); addUrlMethod.invoke(cl, swtFileUrl); Thread.currentThread().setContextClassLoader(cl); try { // Check we can now load the SWT class -this check passes! Class.forName("org.eclipse.swt.widgets.Layout", true, cl); } catch (ClassNotFoundException exx) { System.err.println("Launch failed: Failed to load SWT class from jar: " + swtFileName); throw new RuntimeException(exx); } //this line below throws exception : java.lang.ClassNotFoundException: org.eclipse.swt.widgets.Layout Class&lt;?&gt; c = Class.forName("com.sun.star.google.gui.SWTBrowser", true, cl); Object obj = c.newInstance(); Method run = c.getMethod("run", url.getClass()); //$NON-NLS-1$ run.invoke(obj, new Object[]{url}); </code></pre>
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