@SuppressWarnings({"HardCodedStringLiteral"}) @Nullable public static String getPropertyFromLaxFile( @NotNull final File file, @NotNull final String propertyName) { if (file.getName().endsWith(".properties")) { try { PropertyResourceBundle bundle; InputStream fis = new BufferedInputStream(new FileInputStream(file)); try { bundle = new PropertyResourceBundle(fis); } finally { fis.close(); } if (bundle.containsKey(propertyName)) { return bundle.getString(propertyName); } return null; } catch (IOException e) { return null; } } final String fileContent = getContent(file); // try to find custom config path final String propertyValue = findProperty(propertyName, fileContent); if (!StringUtil.isEmpty(propertyValue)) { return propertyValue; } return null; }