Java Utililty Methods Resource File

List of utility methods to do Resource File

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Resource File

Description

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

Method

void copyDecompressed(String resource, File output)
copy Decompressed

URL input = Resources.getResource(resource);
ByteStreams.copy(new GZIPInputStream(input.openStream()), new FileOutputStream(output));

File copyResource(String name)
copy Resource

InputStream is = URLClassLoader.getSystemResourceAsStream(name);
String tempDir = System.getProperty("java.io.tmpdir");
File tmp = new File(tempDir + File.separator + name);
tmp.deleteOnExit();
ByteStreams.copy(is, new FileOutputStream(tmp));
return tmp;

String expendResource(String fileName)
expend Resource

URL url = Thread.currentThread().getContextClassLoader().getResource(fileName);
if (url != null) {
 return new File(url.getPath()).toString();
} else {
 throw new IOException(String.format("Resource file [%s] doesn't exist", fileName));

URL[] getAllResources(Class clazz, String resource)
get All Resources

if (resource == null || resource.trim().length() == 0) {
 throw new IllegalArgumentException("resource is null!");
ArrayList<URL> urlList = new ArrayList<URL>();
if (clazz != null) {
 URL url = clazz.getResource(resource);
 if (url != null) {
 urlList.add(url);
...

String getBaseLineFolder(String resourceFile)
get Base Line Folder

String result = null;
try {
 ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
 URL localUrl = classLoader.getResource(resourceFile);
 if (localUrl != null) {
 result = convertFileUrlToPath(localUrl);
} catch (Exception ex) {
...

Map> getBundlesContainingResource(BundleContext bundleContext, String resourcePattern)
Returns all bundles that contain a class

Map<Bundle, List<String>> result = new HashMap<Bundle, List<String>>();
Bundle[] bundles = bundleContext.getBundles();
for (Bundle bundle : bundles) {
 List<String> entries = findEntries(bundle, resourcePattern);
 if (entries != null && entries.size() != 0) {
 result.put(bundle, entries);
return result;

byte[] getBytes(Class contextClass, String resourceName)
get Bytes

URL resourceUrl = Resources.getResource(contextClass, resourceName);
return getBytes(resourceUrl);

URL getClassResource(Class clazz)
get Class Resource

String simpleName = clazz.getSimpleName();
return clazz.getResource(simpleName + ".class");

String getContentAsString(String resource)
get Content As String

InputStreamReader isr = getInputStreamReader(resource);
return getContentAsString(isr);

URL getDefaultWebXmlResourceLocation()
get Default Web Xml Resource Location

return Thread.currentThread().getContextClassLoader()
 .getResource("org/bladerunnerjs/model/appserver/non-j2ee-app-web.xml");