使用正则表达式修剪字符串

Question

我不是正则表达式的专家。假设我有这个字符串：

String str = "0,tcp,1.00,0.00,0.11,0.00,0.00,0.00,0.00,1.00,normal."

如果我想删除,normal并将其替换为点，则字符串将变为如下所示：

String str = "0,tcp,1.00,0.00,0.11,0.00,0.00,0.00,0.00,1.00."

我怎样才能在正则表达式中这样做？

非常感谢。

Answer 1

您可以使用,\\w+\\.$这样的正则表达式，其匹配任何以String结尾的,，然后.和String.replaceAll(String, String)

String str = "0,tcp,1.00,0.00,0.11,0.00,0.00,0.00,0.00,1.00,normal."
        .replaceAll(",\\w+\\.$", "\\.");
System.out.println(str);

输出（按要求）

0,tcp,1.00,0.00,0.11,0.00,0.00,0.00,0.00,1.00.