优化这段Java代码：if (("S".equals(dept) && "Y".equals(bagInfo.getBagSOpen()) && !"Y".equals(bagInfo.getBagSFinished())) || ("C".equals(dept) && "Y".equals(bagInfo.getBagCOpen()) && !"Y".equals(bagInfo.getBagCFinished())) || ("C".equals(dept) && "Y".equals(bagInfo.getBagGOpen()) && !"Y".equals(bagInfo.getBagGFinished()))) { record.setBagState("0"); record.setBagDescribe("需开包"); } else if (("S".equals(dept) && "Y".equals(bagInfo.getBagSOpen()) && "Y".equals(bagInfo.getBagSFinished())) || ("C".equals(dept) && "Y".equals(bagInfo.getBagCOpen()) && "Y".equals(bagInfo.getBagCFinished())) || ("C".equals(dept) && "Y".equals(bagInfo.getBagGOpen()) && "Y".equals(bagInfo.getBagGFinished()))) { record.setBagState("0"); record.setBagDescribe("开包完成"); } else if ((("S".equals(dept) && "N".equals(bagInfo.getBagSOpen()) && "N".equals(bagInfo.getBagSFinished())) || ("C".equals(dept) && "N".equals(bagInfo.getBagCOpen()) && "N".equals(bagInfo.getBagCFinished())) || ("C".equals(dept) && "N".equals(bagInfo.getBagGOpen()) && "N".equals(bagInfo.getBagGFinished())))) { record.setBagState("0"); record.setBagDescribe("正常"); } else { record.setBagState("0"); record.setBagDescribe("未知"); }

可以将多个if-else语句合并为一个switch-case语句，将相同的代码提取出来，减少代码重复：

switch (dept) {
    case "S":
        if ("Y".equals(bagInfo.getBagSOpen())) {
            if ("Y".equals(bagInfo.getBagSFinished())) {
                setBagState(record, "0", "开包完成");
            } else {
                setBagState(record, "0", "需开包");
            }
        } else if ("N".equals(bagInfo.getBagSOpen()) && "N".equals(bagInfo.getBagSFinished())) {
            setBagState(record, "0", "正常");
        } else {
            setBagState(record, "0", "未知");
        }
        break;
    case "C":
        if ("Y".equals(bagInfo.getBagCOpen())) {
            if ("Y".equals(bagInfo.getBagCFinished())) {
                setBagState(record, "0", "开包完成");
            } else {
                setBagState(record, "0", "需开包");
            }
        } else if ("Y".equals(bagInfo.getBagGOpen())) {
            if ("Y".equals(bagInfo.getBagGFinished())) {
                setBagState(record, "0", "开包完成");
            } else {
                setBagState(record, "0", "需开包");
            }
        } else if ("N".equals(bagInfo.getBagCOpen()) && "N".equals(bagInfo.getBagCFinished())) {
            setBagState(record, "0", "正常");
        } else if ("N".equals(bagInfo.getBagGOpen()) && "N".equals(bagInfo.getBagGFinished())) {
            setBagState(record, "0", "正常");
        } else {
            setBagState(record, "0", "未知");
        }
        break;
    default:
        setBagState(record, "0", "未知");
        break;
}

private void setBagState(Record record, String state, String describe) {
    record.setBagState(state);
    record.setBagDescribe(describe);
}