public ArrayList<Expense> getCurrentMonthExpenses() {
   ArrayList<Expense> monthExp = new ArrayList<Expense>();
   ArrayList<Expense> expenses;
   DateTime datetimer = new DateTime();
   Calendar today = datetimer.today();
   int current_month = datetimer.currentMonth();
   int current_week = datetimer.currentWeekNumber();
   int current_year = datetimer.currentYear();
   ExpenseRepository repo = new ExpenseRepository();
   expenses = repo.getExpenses();
   CalendarDate expDate;
   for (Expense e : expenses) {
     expDate = e.getDate();
     if (expDate.getYear() == current_year && expDate.getMonth() == current_month) {
       monthExp.add(e);
     }
   }
   return monthExp;
 }