Finding files with specific text recursively using grep - unix

find-text-recursively.sh

#!/bin/bash

# without regex pattern
grep --recursive --include=\*.java -nHIi "utf-8" /my/dir
grep --recursive --include=\*.{java,xml} -nHIi "utf-8" /my/dir

# with regex pattern
grep --recursive --include=\*.{xml,java,jspx} -nHIiE "(utf-8|iso8859-1|windows-1252)" /my/dir

##
## keep the a comma (,) when searching through a single file extension. ie: {,xml}
grep --recursive --include=\*.{,java} -nHIi "utf-8" /my/dir