private void listAllTopics() {
this.topiclist = new ArrayList<Topic>();
try {
this.topiclist = bm.loadTopics();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
System.out.println("list size = " + this.topiclist.size());
this.sortTopiclistByDate(this.topiclist);
}
