IOException --> NullPointerException in JavadocUtil.copyResource

These are not IOExceptions. They are null pointers

{{
protected static void copyResource(URL url, File file) throws IOException {
if (file == null)

{ throw new IOException("The file can't be null."); }

if (url == null)

{ throw new IOException("The url could not be null."); }

FileUtils.copyURLToFile(url, file);
}}}