code: public static void main(String[] args) {
          try {
              Twitter twitter = new TwitterFactory().getInstance();
              System.out.println("Showing suggested user categories.");
              ResponseList<Category> categories = twitter.getSuggestedUserCategories();
              for (Category category : categories) {
                  System.out.println(category.getName() + ":" + category.getSlug());
              }
              System.out.println("done.");
              System.exit(0);
          } catch (TwitterException te) {
              te.printStackTrace();
              System.out.println("Failed to get suggested categories: " + te.getMessage());
              System.exit(-1);
          }
      }
docs: Usage: java twitter4j.examples.suggestedusers.GetSuggestedUserCategories
  
  @param args message