Java Utililty Methods Class Loader

final ClassLoader cl = new URLClassLoader(new URL[] { classFolder.toURI().toURL() });
return Class.forName(className, false, cl);

try {
    if (!USE_SEPARATE_CLASSLOADER) {
        return Class.forName(className);
    String classPathValue = System.getProperty("java.class.path");
    String[] classPath = classPathValue.split(File.pathSeparator);
    URL[] classPathUrl = new URL[classPath.length];
    for (int i = 0; i < classPathUrl.length; i++) {
...

try {
    return (Class<T>) Thread.currentThread().getContextClassLoader().loadClass(className);
} catch (ClassNotFoundException e) {
    URL[] cp = tryToGetContextClassPath();
    throw new IllegalArgumentException("Cannot load class [" + className + "] from classpath "
            + (cp == null ? "<unknown>" : Arrays.deepToString(cp)), e);

try {
    URL[] urls = new URL[] { new URL("file:" + dir + "/") };
    ClassLoader loader = URLClassLoader.newInstance(urls);
    return loader.loadClass(classname);
} catch (Exception e) {
    e.printStackTrace();
return null;
...

ClassLoader loader = Thread.currentThread().getContextClassLoader();
if (loader == null) {
    return Class.forName(name);
} else {
    return loader.loadClass(name);

ClassLoader loader = getCurrentLoader(fallbackClass);
return Class.forName(name, false, loader);

Set<Class<?>> classes = new HashSet<Class<?>>();
List<String> fullclassname = new ArrayList<String>();
for (String filename : filenames) {
    fullclassname.add(packageName + "." + filename);
try {
    URLClassLoader cl = new URLClassLoader(new URL[] { outputDir.toURI().toURL() },
            Thread.currentThread().getContextClassLoader());
...

ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
assert classLoader != null;
String path = packageName.replace(".", "/");
Enumeration<URL> resources = classLoader.getResources(path);
List<File> dirs = new ArrayList<>();
while (resources.hasMoreElements()) {
    URL resource = resources.nextElement();
    dirs.add(new File(resource.getFile()));
...

Map<String, String[]> classifiers = new HashMap<>();
URL dir_url = ClassLoader.getSystemResource(dataDirectoryName);
File dir = new File(dir_url.toURI());
for (String dirName : dir.list()) {
    File file = new File(
            ClassLoader.getSystemResource(dataDirectoryName + File.separator + dirName).toURI());
    if (file.isDirectory()) {
        classifiers.put(file.getName(), file.list());
...

InputStream input = null;
URL resource = classLoader.getResource(path);
if (resource != null) {
    try {
        input = resource.openStream();
    } catch (IOException exception) {
if (input == null) {
    try {
        input = new URL(path).openStream();
    } catch (IOException exception) {
if (input == null) {
    try {
        input = new FileInputStream(path);
    } catch (IOException exception) {
return input;