Java tutorial
//package com.java2s; //License from project: Open Source License import java.io.File; import java.util.ArrayList; import java.util.List; public class Main { private static List<Class> findClasses(File directory, String packageName) { List<Class> classes = new ArrayList<Class>(); 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")) { try { classes.add(Class .forName(packageName + '.' + file.getName().substring(0, file.getName().length() - 6))); } catch (ClassNotFoundException e) { e.printStackTrace(); } } } return classes; } }