question: public NameFileFilter ( String [ ] names , IOCase caseSensitivity ) { if ( names == null ) { throw new IllegalArgumentException ( "The array of names must not be null" ) ; } this . names = new String [ names . length ] ; System . arraycopy ( names , 0 , this . names , 0 , names . length ) ; this . caseSensitivity = caseSensitivity == null ? IOCase . SENSITIVE : caseSensitivity ; }
target:  Constructs a new name file filter for an array of names specifying case-sensitivity. <p> The array is not cloned, so could be changed after constructing the instance. This would be inadvisable however.