get the extension of a file . concode_field_sep PlaceHolder placeHolder concode_field_sep void copyFile concode_elem_sep String getWorkingDir concode_elem_sep String getFileSizeDescription
String function ( File arg0 ) { String loc0 = null ; String loc1 = arg0 . getName ( ) ; int loc2 = loc1 . lastIndexOf ( '.' ) ; if ( loc2 > 0 && loc2 < loc1 . length ( ) - 1 ) { loc0 = loc1 . substring ( loc2 + 1 ) . toLowerCase ( ) ; } return loc0 ; }