Files-Directory listing in Java

This example lists the files and subdirectories in a directory.
File dir = new File("directoryName");
    String[] children = dir.list();
    if (children == null) {
        // Either dir does not exist or is not a directory
    } else {
        for (int i=0; i < children.length; i++) {
            // Get filename of file or directory
            String filename = children[i];
    // It is also possible to filter the list of returned files.
    // This example does not return any files that start with `.'.
    FilenameFilter filter = new FilenameFilter() {
        public boolean accept(File dir, String name) {
            return !name.startsWith(".");
    children = dir.list(filter);
    // The list of files can also be retrieved as File objects
    File[] files = dir.listFiles();
    // This filter only returns directories
    FileFilter fileFilter = new FileFilter() {
        public boolean accept(File file) {
            return file.isDirectory();
    files = dir.listFiles(fileFilter);
Traversing the Files and Directories Under a Directory This example implements methods that recursively visits all files and directories under a directory.
// Process all files and directories under dir public static void visitAllDirsAndFiles(File dir) { process(dir); if (dir.isDirectory()) { String[] children = dir.list(); for (int i=0; i
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  1. Joshua says:

    Excellent, thanks!

  2. shardul says:

    gr8 job

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