关于全局变量和局部变量的疑惑,该怎么解决

double pertotalinsure=0.00;//0            double tmpinsurance=0.00;                         //金保无忧险种的份数进行校验，确保为份额的整数倍            for(int i=0;i<insurelist.size();i++)            {                Map insureMap=(Map)insurelist.get(i);                TMSaleData_Insure tinsure=new TMSaleData_Insure();                tinsure.fillWithNumberDefaultValue(insureMap,-1);                                //TMSaleData_Insure tinsure=(TMSaleData_Insure)insurelist.get(i);                if(!Util.NVL(tinsure.getPlanid()).equals(""))                {                    InsureType itype=this.model.ip.getInsureTypeByCode(tinsure.getPlanid());                                         if(itype!=null)                    {                        if(tinsure.getPlanid().equals(model.Insure_JBWY)||tinsure.getPlanid().equals(model.Insure_JBWY_ADD))                        {                            isjbwy=true;                            pertotalinsure+=tinsure.getInsurance()>0?tinsure.getInsurance():0;//1                            tmpinsurance=Util.toDouble(tdata.getInsurance(), 0.00);                        }                    }                 }            }                        if((tmpinsurance!=pertotalinsure)&&isjbwy&&tmpinsurance>0&&pertotalinsure>0)//2            {                ErrString.append(Util.format("[总保费：#0，各险种保费合计:#1，不一致],",                        Util.NVL(tmpinsurance),Util.NVL(pertotalinsure)));            }