正则表达式用问号替换逗号分隔的单词

Question

I want to replace the following strings:

chrome, internet explorer, mozlla, opera

or

john, jack, jill, bill

with

?, ?, ?, ?

I need a regular expression for Java which can replace the above string. Find all words and replace with question marks

Answer 1

Something like this:

String output = myString.replaceAll("(chrome|internet|explorer|mozlla|opera)", "?");

[Edit] You are changing the question faster then I can answer.

To replace any word:

String output = myString.replaceAll("\b(\w+)\b", "?");

\b - first or last character in the word
\w - alphanumeric
+ - one or more repetitions