簡單應用單例模式

進行參數傳值及本類屬性值調用

 public class TBalancesUtil {    private double before_amount;    private double fen_qi_amountAll;    private double fen_qi_amount;    private TBalances tBalances;    private TBalances tBalancesNew;    private TGrocery tGrocery;    private String period_name;    private int period_fen_qi_shu;    public TBalancesUtil() {    }    private static class Inner {        private static TBalancesUtil getInstance(TBalances tBalances, TBalances tBalancesNew, TGrocery tGrocery, String period_name, int period_fen_qi_shu) {            return new TBalancesUtil(tBalances, tBalancesNew, tGrocery, period_name, period_fen_qi_shu);        }    }    public static TBalancesUtil getSingle(TBalances tBalances, TBalances tBalancesNew, TGrocery tGrocery, String period_name, int period_fen_qi_shu) {        return Inner.getInstance(tBalances, tBalancesNew, tGrocery, period_name, period_fen_qi_shu);    }    public TBalancesUtil(TBalances tBalances, TBalances tBalancesNew, TGrocery tGrocery, String period_name, int period_fen_qi_shu) {        this.tBalances = tBalances;        this.tBalancesNew = tBalancesNew;        this.tGrocery = tGrocery;        this.period_name = period_name;        this.period_fen_qi_shu = period_fen_qi_shu;        this.before_amount = MathUtil.multiply(MathUtil.multiply(tBalances.getServicemoney(), tGrocery.getFixed_rate(), tGrocery.getKeep_decimal()), tGrocery.getBefore_amount_rate(), tGrocery.getKeep_decimal());        this.fen_qi_amountAll = MathUtil.multiply(MathUtil.multiply(tBalances.getServicemoney(), tGrocery.getFixed_rate(), tGrocery.getKeep_decimal()), tGrocery.getFen_qi_amount_rate(), tGrocery.getKeep_decimal());        this.fen_qi_amount = MathUtil.divide(MathUtil.multiply(MathUtil.multiply(tBalances.getServicemoney(), tGrocery.getFixed_rate(), tGrocery.getKeep_decimal()), tGrocery.getFen_qi_amount_rate(), tGrocery.getKeep_decimal()), tBalances.getFen_qi_shu(), tGrocery.getKeep_decimal());    }    public TBalances firstMouth() {        tBalancesNew.setId(tBalances.getId());        tBalancesNew.setContnum(tBalances.getContnum());        tBalancesNew.setAccount_time(tBalances.getAccount_time());        tBalancesNew.setFen_qi_shu(tBalances.getFen_qi_shu());        tBalancesNew.setServicemoney(tBalances.getServicemoney());        tBalancesNew.setBefore_amount(before_amount);        tBalancesNew.setDone_fen_qi_amount(fen_qi_amount);        tBalancesNew.setRemained_fen_qi_shu(tBalances.getFen_qi_shu() - 1);        tBalancesNew.setRemained_fen_qi_amount(fen_qi_amountAll - fen_qi_amount);        tBalancesNew.setCreate_date(tBalances.getCreate_date());        tBalancesNew.setPeriod_name(period_name);        tBalancesNew.setFen_qi_amount(fen_qi_amount);        tBalancesNew.setPeriod_fen_qi_amount(fen_qi_amount);        tBalancesNew.setPeriod_fen_qi_shu(1);        tBalancesNew.setContract_status(1);        return tBalancesNew;    }    public TBalances lastMouth() {        tBalancesNew.setId(tBalances.getId());        tBalancesNew.setContnum(tBalances.getContnum());        tBalancesNew.setAccount_time(tBalances.getAccount_time());        tBalancesNew.setFen_qi_shu(tBalances.getFen_qi_shu());        tBalancesNew.setServicemoney(tBalances.getServicemoney());        tBalancesNew.setDone_fen_qi_amount(fen_qi_amountAll);        tBalancesNew.setCreate_date(tBalances.getCreate_date());        tBalancesNew.setBefore_amount(0.00);        tBalancesNew.setRemained_fen_qi_shu(period_fen_qi_shu);        tBalancesNew.setRemained_fen_qi_amount(0.00);        tBalancesNew.setFen_qi_amount(MathUtil.subtract(fen_qi_amountAll, MathUtil.multiply(fen_qi_amount, (period_fen_qi_shu - 1), 2), 2));        tBalancesNew.setContract_status(2);        tBalancesNew.setPeriod_name(period_name);        tBalancesNew.setPeriod_fen_qi_amount(MathUtil.subtract(fen_qi_amountAll, MathUtil.multiply(fen_qi_amount, (period_fen_qi_shu - 1), 2), 2));        tBalancesNew.setPeriod_fen_qi_shu(period_fen_qi_shu);        return tBalancesNew;    }    public TBalances middleMouth() {        tBalancesNew.setId(tBalances.getId());        tBalancesNew.setContnum(tBalances.getContnum());        tBalancesNew.setAccount_time(tBalances.getAccount_time());        tBalancesNew.setFen_qi_shu(tBalances.getFen_qi_shu());        tBalancesNew.setServicemoney(tBalances.getServicemoney());        tBalancesNew.setPeriod_fen_qi_shu(period_fen_qi_shu);        tBalancesNew.setContnum(tBalances.getContnum());        tBalancesNew.setAccount_time(tBalances.getAccount_time());        tBalancesNew.setFen_qi_shu(tBalances.getFen_qi_shu());        tBalancesNew.setDone_fen_qi_amount(MathUtil.multiply(period_fen_qi_shu, fen_qi_amount, 2));        tBalancesNew.setServicemoney(tBalances.getServicemoney());        tBalancesNew.setCreate_date(tBalances.getCreate_date());        tBalancesNew.setBefore_amount(0.00);        tBalancesNew.setRemained_fen_qi_shu(period_fen_qi_shu);        tBalancesNew.setRemained_fen_qi_amount(MathUtil.subtract(fen_qi_amountAll, MathUtil.multiply(period_fen_qi_shu, fen_qi_amount, 2), 2));        tBalancesNew.setFen_qi_amount(fen_qi_amount);        tBalancesNew.setContract_status(tBalances.getContract_status());        tBalancesNew.setPeriod_name(period_name);        tBalancesNew.setPeriod_fen_qi_amount(fen_qi_amount);        return tBalancesNew;    }}