java - 仅替换完全匹配

Question

我有一个字符串和一些类似的单词，如下所示:-

String sentence = "I have @ty and @ty-1 and @ty-2 as a sentence";

当我说

sentence = sentence.replaceAll("@ty", "space");

输出如下:-

sentence = "I have space and space-1 and space-2 as a sentence";

但是期望的输出是

sentence = "I have space and @ty-1 and @ty-2 as a sentence";

我也尝试过

sentence = sentence.replaceAll("@ty\\b", "space");

即使这样也没有给出正确的输出。

如何解决这个问题？

Answer 1

您可以使用正则表达式:

sentence = sentence.replaceAll("@ty(?!\\-)", "space");

说明:
(?!\\-) 是一个否定的前瞻，这意味着我们只查找 @ty ，后面没有破折号 -.