Java Utililty Methods ClassLoader

final Matcher mSysOut = PAT_SYS_OUT_LOG.matcher(line);
final boolean chk1 = mSysOut.find();
if (chk1) {
    return mSysOut;
final Matcher mLog4j = PAT_LOG4J.matcher(line);
final boolean chk2 = mLog4j.find();
if (chk2) {
...

return getResourceUrl(path) != null;

if (procId == null || "".equals(procId)) {
    return false;
initJVMToolJarClassLoader();
try {
    Object vm = method_AttachToVM.invoke(null, procId);
    if (vm != null) {
        return true;
...

Properties props = new Properties();
FileInputStream fis = new FileInputStream(propsFile);
props.load(fis);
fis.close();
return props;

final Properties props = new Properties();
final URL url = ClassLoader.getSystemResource(filename);
if (url != null) {
    try {
        props.load(url.openStream());
    } catch (final IOException e) {
        e.printStackTrace();
        props.put("stamp", "loading from url " + url + " for " + filename + " failed " + e);
...

Properties p = new Properties();
URL url = ClassLoader.getSystemResource(propertiesName);
if (url == null) {
    throw new FileNotFoundException("Properties file not on classpath: " + propertiesName);
InputStream is = url.openStream();
try {
    p.load(is);
...

Properties props = new Properties();
ClassLoader cl = Thread.currentThread().getContextClassLoader();
URL url = cl.getResource(propsName);
props.load(url.openStream());
return props;

File toolsJar = locateToolsJar();
ClassLoader cl = wrapIntoClassLoader(toolsJar);
try {
    return cl.loadClass("com.sun.tools.attach.VirtualMachine");
} catch (ClassNotFoundException e) {
    throw new IllegalStateException("Unable to find com.sun.tools.attach.VirtualMachine", e);

try {
    String configsDataDir = System.getProperty("repox.data.dir");
    String configurationFile;
    if (configDataDirAlreadyExists(configsDataDir, configurationFilename))
        configurationFile = URLDecoder.decode(configsDataDir + File.separator + configurationFilename,
                "ISO-8859-1");
    else {
        URL configurationURL = Thread.currentThread().getContextClassLoader()
...

URL fileURL = Thread.currentThread().getContextClassLoader().getResource(file);
if (fileURL == null) {
    throw new FileNotFoundException(file);
return new File(fileURL.toURI());