Package org.apache.commons.io.filefilter

Class HiddenFileFilter

  • All Implemented Interfaces:
    FileFilter, FilenameFilter, Serializable, FileVisitor<Path>, PathFilter, PathVisitor, IOFileFilter
    public class HiddenFileFilter
extends AbstractFileFilter
implements Serializable
    This filter accepts Files that are hidden.

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

    Using Classic IO

     File dir = new File(".");
 String[] files = dir.list(HiddenFileFilter.HIDDEN);
 for (String file : files) {
     System.out.println(file);
 }

    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 (String file : files) {
     System.out.println(file);
 }

    Using NIO

     final Path dir = Paths.get("");
 final AccumulatorPathVisitor visitor = AccumulatorPathVisitor.withLongCounters(HiddenFileFilter.HIDDEN);
 //
 // Walk one dir
 Files.walkFileTree(dir, Collections.emptySet(), 1, visitor);
 System.out.println(visitor.getPathCounters());
 System.out.println(visitor.getFileList());
 //
 visitor.getPathCounters().reset();
 //
 // Walk dir tree
 Files.walkFileTree(dir, visitor);
 System.out.println(visitor.getPathCounters());
 System.out.println(visitor.getDirList());
 System.out.println(visitor.getFileList());
    Since:
    1.3
    See Also:
    Serialized Form

    • Field Detail

      • HIDDEN

        public static final IOFileFilter HIDDEN
        Singleton instance of hidden filter

      • VISIBLE

        public static final IOFileFilter VISIBLE
        Singleton instance of visible filter

    • Method Detail

      • accept

        public boolean accept​(File file)
        Checks to see if the file is hidden.
        Specified by:
        accept in interface FileFilter
        Specified by:
        accept in interface IOFileFilter
        Overrides:
        accept in class AbstractFileFilter
        Parameters:
        file - the File to check
        Returns:
        true if the file is hidden, otherwise false.

      • accept

        public FileVisitResult accept​(Path file,
                              BasicFileAttributes attributes)
        Checks to see if the file is hidden.
        Specified by:
        accept in interface IOFileFilter
        Specified by:
        accept in interface PathFilter
        Parameters:
        file - the File to check
        attributes - the file's basic attributes (TODO may be null).
        Returns:
        true if the file is hidden, otherwise false.
        Since:
        2.9.0