I have two regular expressions which are working perfectly fine when use independently.
First : ^.+\\.((jpeg)|(gif)|(png))\\s*$ : search for .jpeg,gif or p
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The spaces in your combined expression are erroneous. You are requiring a space after end of line or before beginning of line, which is impossible in line-oriented input.
As a further improvement, you can remove the superfluous "anything" parts of the match, as well as a good number of redundant parentheses.
javax\.faces\.resource|rfRes|\.(jpeg|gif|png)\s*$
Notice also the proper quoting of literal full stop characters (a lone .
matches any character).
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