java - 删除包含表达式的单词？

Question

我希望删除任何包含“油”的词。我以为 \b 捕获任何包含“油”的词，但似乎只替换了这个词本身:

String str = "foil boil oil toil hello";
str = str.replaceAll("\\boil\\b", "");

输出:

foil boil toil hello

期望的输出:

hello

Answer 1

简单匹配前缀和后缀[a-z]*!

匹配(和替换):

/ ?[a-z]*oil[a-z]* ?/

View an online regex demo.