/** exit's the application */
public void exit() {
// saves posts
posts.saveFile();
// saves users and techs in one file
PersonList pl = new PersonList("Pessoas.dat", Person.PersonTypes.ALL);
for (int i = 0; i < users.size(); i++) pl.add(users.get(i));
for (int i = 0; i < techs.size(); i++) pl.add(techs.get(i));
pl.saveFile();
tickets.saveFile();
System.exit(0);
}
