http://www.iteye.com/problems/86110
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List<Bill> list = billFacade.findBillByUserId(userInfo); Map<String, Float> group = new HashMap<String, Float>(); String type = null; Float moneyTotal = 0f; for(Bill bill : list){ type = bill.getType(); moneyTotal = group.get(type); if(moneyTotal == null){ moneyTotal = 0f; } group.put(type, moneyTotal + bill.getMoney()); }
时间: 2024-10-28 16:36:09