Java Path Copy nio copyRecursively(File fromDirectory, File toDirectory)

Description

copy Recursively

License

Open Source License

Declaration

public static void copyRecursively(File fromDirectory, File toDirectory) throws IOException 

Method Source Code

//package com.java2s;
/*//w ww. ja  v  a2 s .  c o  m
 * Copyright (c) 2002-2015 "Neo Technology,"
 * Network Engine for Objects in Lund AB [http://neotechnology.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.nio.file.Files;

public class Main {
    public static void copyRecursively(File fromDirectory, File toDirectory) throws IOException {
        copyRecursively(fromDirectory, toDirectory, null);
    }

    public static void copyRecursively(File fromDirectory, File toDirectory, FileFilter filter) throws IOException {
        for (File fromFile : fromDirectory.listFiles(filter)) {
            File toFile = new File(toDirectory, fromFile.getName());
            if (fromFile.isDirectory()) {
                Files.createDirectories(toFile.toPath());
                copyRecursively(fromFile, toFile, filter);
            } else {
                copyFile(fromFile, toFile);
            }
        }
    }

    public static void copyFile(File srcFile, File dstFile) throws IOException {
        //noinspection ResultOfMethodCallIgnored
        dstFile.getParentFile().mkdirs();
        FileInputStream input = null;
        FileOutputStream output = null;
        try {
            input = new FileInputStream(srcFile);
            output = new FileOutputStream(dstFile);
            int bufferSize = 1024;
            byte[] buffer = new byte[bufferSize];
            int bytesRead;
            while ((bytesRead = input.read(buffer)) != -1) {
                output.write(buffer, 0, bytesRead);
            }
        } catch (IOException e) {
            // Because the message from this cause may not mention which file it's about
            throw new IOException("Could not copy '" + srcFile + "' to '" + dstFile + "'", e);
        } finally {
            if (input != null) {
                input.close();
            }
            if (output != null) {
                output.close();
            }
        }
    }
}

Related

1. copyFilesAndApplyPermissions(Path sourceDir, Path targetDir, List filenames)
2. copyFilesRecursively(final Path from, final Path to)
3. copyFileToArchive(InputStream srcInputStream, Path destPath)
4. copyFileToDataFolder(ClassLoader cl, String resourceName, Path targetFolder, boolean replace)
5. copyRecursive(Path source, Path target, CopyOption... options)
6. copyRecursively(File src, File dest)
7. copyRecursively(File src, File dest)
8. copyRecursively(final Path source, final Path destination, final CopyOption... options)
9. copyRecursively(Path source, Path target, AtomicLong bytesCounter, CopyOption... copyOptions)