Anonymous

package z.ex.loader;import java.io.File;import java.net.MalformedURLException;import java.net.URL;import java.net.URLClassLoader;public class Launcher {	/**	 * @param args	 */	public static void main(String[] args) {		try {			// build your classpath of whatever you want			File jar = new File("lib/repo.jar");			if (!jar.exists()) {				System.err.println("no repo.jar");				return;			}			File test = new File("lib/test.jar");			if (!test.exists()) {				System.err.println("no test.jar");				return;			}			System.out.println(Launcher.class.getName() + ": "					+ Launcher.class.getClassLoader());			URLClassLoader cl = new URLClassLoader(new URL[] { jar.toURL(),					test.toURL() });			Class lt_class = cl.loadClass("z.ex.test.LoadedTest");			Runnable testMain = (Runnable) lt_class.newInstance();			testMain.run();			// this fails			// Class.forName("z.ex.impl.RepoImpl");		} catch (MalformedURLException e) {			e.printStackTrace();		} catch (ClassNotFoundException e) {			e.printStackTrace();		} catch (InstantiationException e) {			e.printStackTrace();		} catch (IllegalAccessException e) {			e.printStackTrace();		} catch (SecurityException e) {			e.printStackTrace();		} catch (IllegalArgumentException e) {			e.printStackTrace();		}	}}