code: public InputStream getTemporaryResourceAsStream(String resourceName) throws ResourceNotFoundException {
  		InputStream is = null;
  		if (useFileSystemTempDir) {
  			File file = new File(resourceName);
  			try {
  				is = new FileInputStream(file);
  			} catch (FileNotFoundException e) {
  				throw new ResourceNotFoundException(resourceName);
  			}
  		} else {
  			is = doGetResourceAsStream(resourceName);
  		}
  
  		if (is == null) {
  			throw new ResourceNotFoundException(resourceName);
  		}
  
  		return is;
  	}
docs: /*
  (non-Javadoc)
  
  @see
  net.jawr.web.resource.ResourceHandler#getTemporaryResourceAsStream(java
  .lang.String)