Java 代码优化：计算当前周期未完成数量和百分比

double purchaseQuantity = vo.getPurchaseQuantity() == null ? 0 : vo.getPurchaseQuantity();\n double cucurrentIncompleteQuantity = purchaseQuantity - vo.getCurrentPeriodQuantity();\n vo.setCucurrentIncompleteQuantity(cucurrentIncompleteQuantity);\n double cucurrentIncompletePercentage = vo.getCurrentPeriodQuantity() == 0 ? 0 : cucurrentIncompleteQuantity / vo.getCurrentPeriodQuantity();\n vo.setCucurrentIncompletePercentage(decimalFormat.format(cucurrentIncompletePercentage));