code: public String findString(String uri) throws IOException {
          String fullUri = path + uri;
  
          URL resource = getResource(fullUri);
          if (resource == null) {
              throw new IOException("Could not find a resource in : " + fullUri);
          }
  
          return readContents(resource);
      }
docs: Reads the contents of the URL as a {@link String}'s and returns it.
  
  @param uri
  @return a stringified content of a resource
  @throws IOException if a resource pointed out by the uri param could not be find
  @see ClassLoader#getResource(String)