Question

如何消除此,|中的最后String：

String model ="07:40,09:00,10:20,11:40,|09:00,10:20,11:40,|07:40,09:00,10:20,11:40,|10:20,11:40,|";

模型是变量String，结果应该是这样的：

String result="07:40,09:00,10:20,11:40,|09:00,10:20,11:40,|07:40,09:00,10:20,11:40,|10:20,11:40";

Answer 1

如果它总是,|并且您不知道它是否会出现，请使用replaceFirst：

model = model.replaceFirst(",\\|$", "");

P.S。 $代表String的结尾

Answer 2

   String model ="07:40,09:00,10:20,11:40,|09:00,10:20,11:40,|07:40,09:00,10:20,11:40,|10:20,11:40,|";
   String result = model.substring(0, model.length() -2);
   System.out.println(result);

javadoc： substring（int beginIndex，int endIndex）：返回一个新字符串，它是该字符串的子字符串。

Answer 3

如果这总是出现，你可以剪掉字符串的结尾。为此，您可以使用此代码：

result = model.substring(0, path.length() - 2);

如果只是偶尔发生，你可以这样做：

if (model.substring(path.length - 2, path.length).equals(",|")) {
    result = model.substring(0, path.length() - 2);
} else {
    result = model
}

Answer 4

尝试 StringUtils ：

import org.apache.commons.lang3.StringUtils;

// model = "07:40,09:00,10:20,11:40,|09:00,10:20,11:40,|07:40,09:00,10:20,11:40,|10:20,11:40,|"
model = StringUtils.removeEnd(model, ",|");
// Now 
// model = "07:40,09:00,10:20,11:40,|09:00,10:20,11:40,|07:40,09:00,10:20,11:40,|10:20,11:40";

Answer 5

String correctedModel=new StringBuilder(model).deleteCharAt(model.lastIndexOf('|')).toString();

检查文档StringBuilder.deleteChartAt()和String.lastIndexOf()

消除String java中的char

5 个答案: