package groupHistory; import java.io.File; import java.io.IOException; import java.net.URL; import java.util.ArrayList; import java.util.Enumeration; import java.util.List; /** * Scans all classes accessible from the context class loader which belong to the given package and subpackages. * * @param packageName The base package * @return The classes * @throws ClassNotFoundException * @throws IOException */ class Temporary1{ public static Class[] getClasses(String packageName) throws ClassNotFoundException, IOException { ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); assert classLoader != null; String path = packageName.replace('.', '/'); System.out.println(path); Enumeration<URL> resources = classLoader.getResources(path); List<File> dirs = new ArrayList<File>(); while (resources.hasMoreElements()) { URL resource = resources.nextElement(); dirs.add(new File(resource.getFile().replace("%20", " "))); } ArrayList<Class> classes = new ArrayList<Class>(); for (File directory : dirs) { classes.addAll(findClasses(directory, packageName)); } return classes.toArray(new Class[classes.size()]); } /** * Recursive method used to find all classes in a given directory and subdirs. * * @param directory The base directory * @param packageName The package name for classes found inside the base directory * @return The classes * @throws ClassNotFoundException */ public static List<Class> findClasses(File directory, String packageName) throws ClassNotFoundException { List<Class> classes = new ArrayList<Class>(); System.out.println(directory.exists()); if (!directory.exists()) { return classes; } File[] files = directory.listFiles(); for (File file : files) { if (file.isDirectory()) { assert !file.getName().contains("."); classes.addAll(findClasses(file, packageName + "." + file.getName())); } else if (file.getName().endsWith(".class")) { classes.add(Class.forName(packageName + '.' + file.getName().substring(0, file.getName().length() - 6))); } } return classes; } } public class Temporary{ public static void main(String[] args) { try{ Class[] classes = Temporary1.getClasses("."); System.out.println(classes.length); for (int i = 0; i < classes.length; i++) { System.out.println(classes[i].getName()); System.out.println(); } System.out.println("I am done "); }catch(Exception e){System.out.println(e.getMessage());} } }