code: private boolean importDatabase(String sender) {
          PreparedStatement statement = null;
          try {
              statement = connect.prepareStatement("SELECT * FROM fe_accounts");
              ResultSet rs = statement.executeQuery();
              List<User> userList = new ArrayList<>();
              while (rs.next()) {
                  userList.add(new User(rs.getString("name"), rs.getDouble("money")));
              }
              rs.close();
              addAccountToString(sender, userList);
          } catch (SQLException e) {
              e.printStackTrace();
          } finally {
              Tools.closeJDBCStatement(statement);
              Tools.closeJDBCConnection(connect);
          }
          return true;
      }
docs: Import accounts from the database.
  
  @param sender The command sender so we can send back messages.
  @return True if the convert is done. Else false.