Java Utililty Methods Class Loader

return (URLClassLoader) URLClassLoader.getSystemClassLoader();

ClassLoader cl = null;
if (directories == null || directories.length == 0) {
    System.out.println("Directory is null or 0 length");
    return cl;
ArrayList urlList = new ArrayList();
for (int i = 0; i < directories.length; i++) {
    File directory = directories[i];
...

try {
    File file = new File(path);
    URL url = file.toURL();
    return new URLClassLoader(new URL[] { url }, Thread.currentThread().getContextClassLoader());
} catch (Exception e) {
    return Thread.currentThread().getContextClassLoader();

return clazz.getClassLoader();

final Lock readLock = LOCK.readLock();
readLock.lock();
if (CLASSLOADER_MAP.containsKey(baseFolder)) {
    readLock.unlock();
    return CLASSLOADER_MAP.get(baseFolder);
} else {
    final Lock writeLock = LOCK.writeLock();
    writeLock.lock();
...

URL rootUrl = forClass.getClassLoader().getResource(".");
return new File(rootUrl.getFile());

Collection<URLClassLoader> loaders = new ArrayList<URLClassLoader>(8);
ClassLoader loader = baseClassLoader;
while (loader != null) {
    if ("sun.misc.Launcher$ExtClassLoader".equals(loader.getClass().getName())) {
        break;
    if (loader instanceof URLClassLoader) {
        loaders.add((URLClassLoader) loader);
...

ArrayList stack = new ArrayList();
while (cl != null) {
    if (cl instanceof URLClassLoader) {
        stack.add(cl);
    cl = cl.getParent();
URLClassLoader[] ucls = new URLClassLoader[stack.size()];
...

String className = "/" + clazz.getName().replace('.', '/') + ".class";
URL u = clazz.getResource(className);
String s = u.toString();
if (s.startsWith("jar:file:/")) {
    int pos = s.indexOf(".jar!/");
    if (pos != -1) {
        if (File.separator.equals("\\")) {
            s = s.substring("jar:file:/".length(), pos + ".jar".length());
...

Class myClass = Class.forName(className);
URL locationUrl = myClass.getProtectionDomain().getCodeSource().getLocation();
String location = locationUrl.toString();
if (location.startsWith("jar")) {
    locationUrl = ((JarURLConnection) locationUrl.openConnection()).getJarFileURL();
    location = locationUrl.toString();
if (location.startsWith("file")) {
...