java regular expression to match file path

Question

I was trying out to create a regular expression to match file path in java like

C:\\abc\\def\\ghi\\abc.txt

I tried this ([

Answer 1

Just saying, one should replace the . in

([a-zA-Z]:)?(\\\\[a-zA-Z0-9_.-]+)+\\\\?

with \\.

. is meant for any character in a regular expression (Java style), while
\. is specifically meant for . character, and we need to escape the backslash