Java Utililty Methods Resource File

List of utility methods to do Resource File

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Description

The list of methods to do Resource File are organized into topic(s).

Method

InputStreamgetStreamFromResource(Class clazz, String resourceName)
Get a string from a Resource . 
if (resourceName.startsWith("res://") && clazz != null) {
    URL url = clazz.getResource(resourceName.substring(6));
    if (url == null) {
        throw new FileNotFoundException("Resource " + resourceName + " not found on CLASSPATH.");
    return url.openStream();
} else {
    try {
...
FilegetTestResourceFile(String pName, Class pClass)
get Test Resource File 
URL lFile = pClass.getResource(pName);
return new File(lFile.getFile());
InputStreaminputStream(Class baseClass, String resourceName)
input Stream 
URL url = baseClass.getResource(resourceName);
if (url == null) {
    throw new FileNotFoundException(String.format("Resource file is not found. %s", resourceName));
return url.openStream();
booleanisFullIRI(String resource)
Determines if the resource is a full iri 
try {
    new URL(resource);
    return true;
} catch (MalformedURLException ex) {
    return false;
ListloadAutoConfigFiles(ClassLoader classLoader, String resourceName)
load Auto Config Files 
try {
    List<URL> urlList = new ArrayList<URL>();
    Enumeration<URL> urls = classLoader.getResources(resourceName);
    for (; urls.hasMoreElements();) {
        URL url = urls.nextElement();
        urlList.add(url);
    return urlList;
...
InputStreamloadConfigFile(String resource, Class clazz)
load Config File 
ClassLoader classLoader = null;
try {
    Method method = Thread.class.getMethod("getContextClassLoader");
    classLoader = (ClassLoader) method.invoke(Thread.currentThread());
} catch (Exception e) {
    System.out.println("loadConfigFile error: ");
    e.printStackTrace();
if (classLoader == null) {
    classLoader = clazz.getClassLoader();
try {
    if (classLoader != null) {
        URL url = classLoader.getResource(resource);
        if (url == null) {
            System.out.println("Can not find resource:" + resource);
            return null;
        if (url.toString().startsWith("jar:file:")) {
            System.out.println("Get resource \"" + resource + "\" from jar:\t" + url.toString());
            return clazz.getResourceAsStream(resource.startsWith("/") ? resource : "/" + resource);
        } else {
            System.out.println("Get resource \"" + resource + "\" from:\t" + url.toString());
            return new FileInputStream(new File(url.toURI()));
} catch (Exception e) {
    System.out.println("loadConfigFile error: ");
    e.printStackTrace();
return null;
StringloadUTF8(String resource)
load UTF 
File source = getFile(resource);
if (source == null) {
    return null;
InputStream in = new FileInputStream(source);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
pipe(in, bos);
in.close();
...
InputStreamopenInputStream(String resourceString, ClassLoader classLoader)
open Input Stream 
int indexOfColon = resourceString.indexOf(':');
String prefix = resourceString.substring(0, indexOfColon);
if ("classpath".equalsIgnoreCase(prefix)) {
    String path = resourceString.substring(indexOfColon + 1);
    return classLoader.getResourceAsStream(path);
return new URL(resourceString).openStream();
StringparseASX(String inputResource)
parse ASX 
String inputFile = "";
try {
    String contents = readTextFromUrl(new URL(inputResource));
    for (String line : contents.split("\n")) {
        if (line.toLowerCase().contains("href")) {
            String pattern = "(?i).*href=\"(.*)\".*";
            inputFile = line.replaceAll(pattern, "$1");
            break;
...
voidprintUsage(ResourceBundle bundle)
Prints the usage through system out. 
System.out.println(bundle.getString("message.info.usage"));