Get file attribute using Files - Java File Path IO

Java examples for File Path IO:File Attribute

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Description

Get file attribute using Files

Demo Code

import java.io.File;
import java.io.IOException;
import java.nio.file.*;
import java.util.Dictionary;


public class FilesandDictionaries {
    public static void main(String[] args) {
        Path path = Paths.get("CP1", "test.txt");
        System.out.println(Files.exists(path,
                new LinkOption[] { LinkOption.NOFOLLOW_LINKS }));

        Path notexistpath = FileSystems.getDefault().getPath("CP4",
                "test.txt");
        System.out.println(Files.notExists(notexistpath));

        //Properties
        System.out.println(Files.isExecutable(path));
        System.out.println(Files.isReadable(path));
        System.out.println(Files.isWritable(path));
        System.out.println(Files.isRegularFile(path,
                LinkOption.NOFOLLOW_LINKS));

        //check same file, hidden file
        Path samepath = Paths.get("CP1", "test.txt");
        try {/*from  w w  w  .j  av a  2s  . c o  m*/
            System.out.println(Files.isSameFile(path, samepath));
            System.out.println(Files.isHidden(path));
        } catch (IOException e) {
            e.printStackTrace();
        }

        //List filesystem root dictionaries
        Iterable<Path> dirs = FileSystems.getDefault().getRootDirectories();
        for (Path name : dirs) {
            System.out.println(name);
        }

        //Old Java 6 way to show files

        File[] roots = File.listRoots();
        for (File f : roots) {
            System.out.println(f);
        }
        System.out.println("\nBefore adding a filter");
        //Create a new dic
        Path newpath = FileSystems.getDefault().getPath("C:/path.txt");
        try {
            Files.createFile(newpath);
        } catch (IOException e) {
            e.printStackTrace();
        }

        //List the content of folder
        Path foldercontent = Paths.get("C:/");
        try (DirectoryStream<Path> ds = Files
                .newDirectoryStream(foldercontent)) {
            for (Path f : ds) {
                System.out.println(f.getFileName());//API. getFileName()
            }
        } catch (IOException e) {
            System.err.println(e);
        }

        System.out.println("\nAfter adding a filter");
        //Define a filter
        DirectoryStream.Filter<Path> dir_filter = new DirectoryStream.Filter<Path>() {
            public boolean accept(Path path) throws IOException {
                return (Files.size(path) > 2000);
            }
        };

        try (DirectoryStream<Path> ds = Files.newDirectoryStream(
                foldercontent, dir_filter)) {
            for (Path fi : ds) {
                System.out.println(fi.getFileName());
            }
        } catch (IOException e) {
            System.out.println(e);
        }

    }
}

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