高效率的代码是件好事，但很多情况下，并非代码行数越少效率就越高。看下面这个“简单”的例子：if(newStatusCode.equals("SD") && (sellOffDate == null ||
todayDate.compareTo(sellOffDate)<0 || (lastUsedDate != null &&
todayDate.compareTo(lastUsedDate)>0)) ||
(newStatusCode.equals("OBS") && (OBSDate == null ||
todayDate.compareTo(OBSDate)<0))){
newStatusCode = "NYP";
}
