This filter accepts Files that are hidden.

Example, showing how to print out a list of the current directory's hidden files:

File dir = new File(".");
String[] files = dir.list( HiddenFileFilter.HIDDEN );
for ( int i = 0; i < files.length; i++ ) {
    System.out.println(files[i]);
}

Example, showing how to print out a list of the current directory's visible (i.e. not hidden) files:

File dir = new File(".");
String[] files = dir.list( HiddenFileFilter.VISIBLE );
for ( int i = 0; i < files.length; i++ ) {
    System.out.println(files[i]);
}