code: public static PropertyFile find(final ClassLoader classloader, final String... fileNames)
  	{
  		URL resolvedResource = null;
  		String resolvedFile = null;
  
  		for (String fileName : fileNames)
  		{
  			if (fileName.charAt(0) == '/')
  			{
  				File file = new File(fileName);
  
  				if (file.exists())
  				{
  					try
  					{
  						return PropertyFile.readOnly(file);
  					}
  					catch (IOException e)
  					{
  						throw new IllegalArgumentException("Error loading property file: " +
  						                                   fileName +
  						                                   ". Error: " +
  						                                   e.getMessage(), e);
  					}
  				}
  			}
  			else
  			{
  				// Try to resolve the filename (for logging any errors)
  				final URL resource = classloader.getResource(fileName);
  
  				if (resource != null)
  				{
  					resolvedFile = fileName;
  					resolvedResource = resource;
  					break;
  				}
  			}
  		}
  
  		if (resolvedFile == null)
  		{
  			if (fileNames.length == 1)
  				throw new IllegalArgumentException("Error finding property file in classpath: " + fileNames[0]);
  			else
  				throw new IllegalArgumentException("Error finding property files in classpath: " + Arrays.asList(fileNames));
  		}
  		else if (log.isInfoEnabled())
  			log.info("{find} Loading properties from " + resolvedFile);
  
  		return openResource(classloader, resolvedResource, resolvedFile);
  	}
docs: Find a property file
  
  @param classloader
  @param fileName
  
  @return