Minor Description
The FileFilterUtils class provides many factory methods, but holds back a few needed ones
like FileFilterUtils.suffixFileFilter(String str) (same regarding the PrefixFileFilter)
the SuffixFileFilter has another constructor the provides the case - sensibility
for the file filter, a much needed one for windows and linux systems.
usage ex :
FileFilterUtils.SuffixFileFilter(String suffix, IOCase caseSensitivity);