java正则表达式：以任何顺序匹配多个逗号分隔的字符串

Question

I have an incoming String like "Product Options, Server Applications, CurrentVersion" I have to create a REGEX to match a Value to the above string containing all comma separated strings in any order Case insensitive.

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1. eg "Currentversion, Product options, server applications" should match

2. "Productoptions, currentversion, server applications" should NOT match

3. "server applications, Product options, Currentversion" should match

Answer 1

Here's the answer I came up with:

For regex based solution the following should work-

String r =^(?=.*Product Options)(?=.*Server Applications)(?=.*CurrentVersion).*$
Pattern p= Pattern.compile(r, Pattern.CASE_INSENSITIVE);
p.matcher(s).matches()

This should match the strings found in any order