public void viewDetail(ArticleDTO article) {
   int rangeLimit = 10;
   int word = 0;
   char[] content = (article.getContent()).toCharArray();
   StringBuilder contents = new StringBuilder();
   System.out.println("ID: " + article.getId());
   System.out.println("Author: " + article.getAuthor());
   System.out.println("Title: " + article.getTitle());
   // System.out.println("Content: " + article.getContent());
   for (int i = 0; i < content.length; i++) {
     contents.append(content[i]);
     if (content[i] == ' ') {
       word++;
       if (word == rangeLimit) {
         contents.append(" ");
         word = 0;
       }
     }
   }
   System.out.println("content: \n" + contents.toString().trim());
   System.out.println("Publish Date: " + article.getPublishDate());
   System.out.println("\n\n");
 }