Solution given by Danny
Navigate to <Netbeans installation directory>/etc
and open the netbeans.conf
file.
Add -J-Dfile.encoding=UTF-8
at the end of the line that starts with netbeans_default_options
(make sure to include the leading space).
Restart Netbeans and it should be in UTF-8
To verify go to help -> about
and check System: Windows Vista version 6.0 running on x86; UTF-8; nl_NL (nb)
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