java 后台，根据年份执行一次任务，数据库+1，次年清零

搞个事件编号 ， 规则是： 年份+4位办理次数

    public static String code(String sYear) {
        
        String itemId = "00000000";//事件记录主键
        String sql = "select * from 记录表 where itemid = ? ";
        Object[] objects = { itemId };
        RecordSet rs = SQL.execute(sql, objects);
        String year ="";
        String code ="";
        Integer in = null;
        while(rs.next()){
            year = rs.getString("YEAR");
            in = Integer.parseInt(rs.getString("CODE"));
        }
        if(year.equals(sYear)){//sYear是传入的本年年份
            ++in;
            code = in.toString();
            if(code.length()==1){
                code = "000"+code;
            }else if(code.length()==2){
                code = "00"+code;
            }else if(code.length()==3){
                code = "0"+code;
            }
             Object[] obj = {sYear,code,itemId};
             String sq = "update  记录表 set YEAR= ?, CODE= ? where itemid = ? ";
             RecordSet r = SQL.execute(sq, obj);
            return code;
        }else{
             code="0001";
             Object[] obj = {sYear,code,itemId};
             String sq = "update  数据表 set YEAR= ?, CODE= ? where itemid = ? ";
             RecordSet r = SQL.execute(sq, obj);
            return sYear+code;
        }
    }

有大神帮帮看有好点的办法吗？