@Override
      public boolean canClose(String inputString) {
        try {
          //noinspection ResultOfObjectAllocationIgnored
          new URL(inputString);
          return true;
        }
        catch (MalformedURLException e1) {
          Messages.showErrorDialog(e1.getMessage(), ProjectBundle.message("sdk.configure.javadoc.url.title"));
        }
        return false;
      }
@Override
      public boolean canClose(String inputString)