Java Utililty Methods Class Find

List<Class> classes = new ArrayList<Class>();
File directory = null;
try {
    ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
    if (classLoader == null)
        throw new ClassNotFoundException("Can't get class loader.");
    String path = '/' + packageName.replace('.', '/');
    URL resource = classLoader.getResource(path);
...

List<Class> classes = new ArrayList<Class>();
if (packageName == null || packageName.trim().length() == 0 || superClass == null
        || superClass.length == 0) {
    return classes;
List<String> files = new ArrayList<String>();
ClassLoader oldLoader = Thread.currentThread().getContextClassLoader();
try {
...

String resource = clazz.getName().replace('.', '/') + ".class";
return findResourceBase(resource, clazz.getClassLoader());

TreeSet<String> classes = new TreeSet<String>();
if (directory.startsWith("file:") && directory.contains("!")) {
    String[] split = directory.split("!");
    URL jar = new URL(split[0]);
    ZipInputStream zip = new ZipInputStream(jar.openStream());
    ZipEntry entry = null;
    while ((entry = zip.getNextEntry()) != null) {
        if (entry.getName().endsWith(".class")) {
...

TreeSet<String> classes = new TreeSet<String>();
if (path.startsWith("file:") && path.contains("!")) {
    String[] split = path.split("!");
    URL jar = new URL(split[0]);
    ZipInputStream zip = new ZipInputStream(jar.openStream());
    ZipEntry entry;
    while ((entry = zip.getNextEntry()) != null) {
        if (entry.getName().endsWith(".class")) {
...

List<Class<?>> classes = new ArrayList<Class<?>>();
recurse(classes, packageName, a);
return classes;

ClassLoader loader = Thread.currentThread().getContextClassLoader();
Set<Class<T>> classes = new HashSet<Class<T>>();
String path = packageName.replace('.', '/');
URL resource = loader.getResource(path);
if (resource != null) {
    String filePath = resource.getFile();
    if (filePath != null && new File(filePath).isDirectory()) {
        for (String file : new File(filePath).list()) {
...

String jarRelatedPath = "/" + context.getName().replace(".", "/") + ".class";
URL location = context.getResource(jarRelatedPath);
String jarPath = "";
try {
    jarPath = URLDecoder.decode(location.getPath(), "UTF-8");
} catch (UnsupportedEncodingException e) {
    throw new RuntimeException(e);
return jarPath.substring(0, jarPath.lastIndexOf("/") + 1);

try {
    final URL url = cls.getClassLoader().getResource(cls.getName().replace('.', '/') + ".class");
    final File file = new File(url.getFile()); 
    if (file.exists())
        return file;
} catch (Exception ex) {
try {
...

List<Class<?>> classes = new ArrayList<Class<?>>();
for (Class<?> c : getClasses(cls)) {
    if (cls.isAssignableFrom(c) && !cls.equals(c)) {
        classes.add(c);
return classes;