"".equals()
时间: 2024-06-23 08:02:42 浏览: 186
`".equals()"` 是 Java 中字符串类(`String`)中的一个方法,用于比较两个字符串是否相等。这个方法接受一个参数,另一个字符串,然后检查它们的内容是否完全相同。如果两个字符串的每个字符都一样,包括长度和顺序,那么 `".equals()"` 就会返回 `true`,否则返回 `false`。
例如:
```java
String str1 = "Hello";
String str2 = "Hello";
String str3 = "World";
System.out.println(str1.equals(str2)); // 输出: true
System.out.println(str1.equals(str3)); // 输出: false
```
相关问题
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())) || ("G".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())) || ("G".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())) || ("G".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"); }
可以将代码中的重复部分提取出来,使用一个方法来判断是否符合条件并设置 record 的值。具体实现如下:
```
private void setRecordBagState(String dept, BagInfo bagInfo, Record record) {
if (("Y".equals(getBagOpen(dept, bagInfo)) && !"Y".equals(getBagFinished(dept, bagInfo)))) {
record.setBagState("0");
record.setBagDescribe("需开包");
} else if (("Y".equals(getBagOpen(dept, bagInfo)) && "Y".equals(getBagFinished(dept, bagInfo)))) {
record.setBagState("0");
record.setBagDescribe("开包完成");
} else if (("N".equals(getBagOpen(dept, bagInfo)) && "N".equals(getBagFinished(dept, bagInfo)))) {
record.setBagState("0");
record.setBagDescribe("正常");
} else {
record.setBagState("0");
record.setBagDescribe("未知");
}
}
private String getBagOpen(String dept, BagInfo bagInfo) {
switch (dept) {
case "S":
return bagInfo.getBagSOpen();
case "C":
return bagInfo.getBagCOpen();
case "G":
return bagInfo.getBagGOpen();
default:
return "";
}
}
private String getBagFinished(String dept, BagInfo bagInfo) {
switch (dept) {
case "S":
return bagInfo.getBagSFinished();
case "C":
return bagInfo.getBagCFinished();
case "G":
return bagInfo.getBagGFinished();
default:
return "";
}
}
```
然后在原代码中调用 `setRecordBagState` 方法即可:
```
setRecordBagState(dept, bagInfo, record);
```
public static String wuxing(String gzYear, String gzMonth, String gzDay, String gzTime) { // 天干年 String gYear = gzYear.substring(0, 1); if ("甲".equals(gYear) || "乙".equals(gYear)) { gYear = "木"; } if ("丙".equals(gYear) || "丁".equals(gYear)) { gYear = "火"; } if ("戊".equals(gYear) || "己".equals(gYear)) { gYear = "土"; } if ("庚".equals(gYear) || "辛".equals(gYear)) { gYear = "金"; } if ("壬".equals(gYear) || "癸".equals(gYear)) { gYear = "水"; } // 天干月 String gMonth = gzMonth.substring(0, 1); if ("甲".equals(gMonth) || "乙".equals(gMonth)) { gMonth = "木"; } if ("丙".equals(gMonth) || "丁".equals(gMonth)) { gMonth = "火"; } if ("戊".equals(gMonth) || "己".equals(gMonth)) { gMonth = "土"; } if ("庚".equals(gMonth) || "辛".equals(gMonth)) { gMonth = "金"; } if ("壬".equals(gMonth) || "癸".equals(gMonth)) { gMonth = "水"; } // 天干日 String gDay = gzDay.substring(0, 1); if ("甲".equals(gDay) || "乙".equals(gDay)) { gDay = "木"; } if ("丙".equals(gDay) || "丁".equals(gDay)) { gDay = "火"; } if ("戊".equals(gDay) || "己".equals(gDay)) { gDay = "土"; } if ("庚".equals(gDay) || "辛".equals(gDay)) { gDay = "金"; } if ("壬".equals(gDay) || "癸".equals(gDay)) { gDay = "水"; } // 天干时 String gTime = gzTime.substring(0, 1); if ("甲".equals(gTime) || "乙".equals(gTime)) { gTime = "木"; } if ("丙".equals(gTime) || "丁".equals(gTime)) { gTime = "火"; } if ("戊".equals(gTime) || "己".equals(gTime)) { gTime = "土"; } if ("庚".equals(gTime) || "辛".equals(gTime)) { gTime = "金"; } if ("壬".equals(gTime) || "癸".equals(gTime)) { gTime = "水"; }
这段代码看起来是一个方法,名字叫做"wuxing",它接受四个参数:gzYear、gzMonth、gzDay、gzTime,都是String类型。在方法体内,它对这四个参数进行处理,将它们的首个字符与五行相对应,比如 "甲" 和 "乙" 对应 "木","丙" 和 "丁" 对应 "火",以此类推。最后,它将这四个处理后的字符串返回。我猜测这段代码可能是用于中医五行分析或者其他类似的领域。
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