Java FileChannel Copy tryCopyFile(File sourceLocation, File targetLocation)

Description

try Copy File

License

MIT License

Declaration

public static boolean tryCopyFile(File sourceLocation, File targetLocation) 

Method Source Code

//package com.java2s;
/*/* w  w w  . jav  a  2 s.  co m*/
 * This file is part of UltimateCore, licensed under the MIT License (MIT).
 *
 * Copyright (c) Bammerbom
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import java.io.*;
import java.nio.channels.FileChannel;
import java.util.*;

public class Main {
    public static boolean tryCopyFile(File sourceLocation, File targetLocation) {
        try {
            copyFile(sourceLocation, targetLocation);
            return true;
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        return false;
    }

    public static void copyFile(File sourceLocation, File targetLocation) throws IOException {
        if (sourceLocation.isDirectory()) {
            if (!targetLocation.exists()) {
                targetLocation.mkdirs();
            }
            for (File subFile : listFiles(sourceLocation)) {
                String subFileName = subFile.getName();
                copyFile(new File(sourceLocation, subFileName), new File(targetLocation, subFileName));
            }
        } else {
            FileInputStream input = null;
            FileOutputStream output = null;
            FileChannel inputChannel = null;
            FileChannel outputChannel = null;
            try {
                input = new FileInputStream(sourceLocation);
                inputChannel = input.getChannel();
                output = createOutputStream(targetLocation);
                outputChannel = output.getChannel();

                long transfered = 0L;
                long bytes = inputChannel.size();
                while (transfered < bytes) {
                    transfered += outputChannel.transferFrom(inputChannel, 0L, inputChannel.size());
                    outputChannel.position(transfered);
                }
            } finally {
                if (inputChannel != null) {
                    inputChannel.close();
                } else if (input != null) {
                    input.close();
                }

                if (outputChannel != null) {
                    outputChannel.close();
                } else if (output != null) {
                    output.close();
                }
            }
        }
    }

    public static Iterable<File> listFiles(File directory) {
        return Arrays.asList(directory.listFiles());
    }

    public static FileOutputStream createOutputStream(File file) throws IOException, SecurityException {
        return createOutputStream(file, false);
    }

    public static FileOutputStream createOutputStream(File file, boolean append)
            throws IOException, SecurityException {
        File directory = file.getAbsoluteFile().getParentFile();
        if ((!directory.exists()) && (!directory.mkdirs())) {
            throw new IOException("Failed to create the parent directory of the file");
        }
        if ((!file.exists()) && (!file.createNewFile())) {
            throw new IOException("Failed to create the new file to write to");
        }
        return new FileOutputStream(file, append);
    }
}

Related

1. fileStreamCopy(FileInputStream in, FileOutputStream out, boolean closeOutput)
2. nioCopy(File source, File target, FilenameFilter filter)
3. nioCopy(FileOutputStream fos, FileInputStream fis)
4. nioCopyFile(File source, File target, boolean replaceIfExists)
5. touchcopy(File src, File dest)