Example usage for java.nio.file Files walk

Introduction

In this page you can find the example usage for java.nio.file Files walk.

Prototype

public static Stream<Path> walk(Path start, int maxDepth, FileVisitOption... options) throws IOException 

Source Link

Document

Return a Stream that is lazily populated with Path by walking the file tree rooted at a given starting file.

Usage

From source file:org.mitre.mpf.mvc.util.NIOUtils.java

public static long getSubFilesAndDirsCount(final Path p) {
    long count = 0;
    //help from http://stackoverflow.com/questions/18300105/number-of-subfolders-in-a-folder-directory
    try {//from www .ja v  a 2  s .  co  m
        count = Files.walk(p, 1, FileVisitOption.FOLLOW_LINKS).count() - 1; // '-1' because the Path param (p) is also counted in
    } catch (IOException e) {
        log.error("Error determing the count of sub files and directories.", e);
    }

    return count;
}

---

From source file:jonelo.jacksum.concurrent.Jacksum2Cli.java

private void loadFilesToHash(List<Path> allFiles, Map<Path, Long> fileSizes, Map<Path, Long> fileLastModified)
        throws IOException {

    final int maxDepth = this.recursive ? Integer.MAX_VALUE : 1;
    final FileSystem fs = FileSystems.getDefault();
    final FileVisitOption[] options = this.ignoreSymbolicLinksToDirectories ? new FileVisitOption[0]
            : new FileVisitOption[] { FileVisitOption.FOLLOW_LINKS };

    for (String filename : this.filenames) {
        Files.walk(fs.getPath(filename), maxDepth, options).filter(path -> Files.isRegularFile(path))
                .forEach(path -> {//ww  w.  ja  v  a  2 s . c o  m
                    allFiles.add(path);
                    try {
                        fileSizes.put(path, Files.size(path));
                        fileLastModified.put(path, Files.getLastModifiedTime(path).toMillis());
                    } catch (IOException ioEx) {
                        fileSizes.put(path, -1l);
                        fileLastModified.put(path, 0l);
                    }
                });
    }

}

---