Java FileChannel Copy copyFile(String source, String destination)

Description

copy File

License

Open Source License

Declaration

public static void copyFile(String source, String destination) throws IOException 

Method Source Code

//package com.java2s;
/* Copyright (C) 2000-2003 The Software Conservancy as Trustee.
 * All rights reserved./*w  w  w .ja  v a2s.  c o  m*/
 *
 * 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.
 *
 * Nothing in this notice shall be deemed to grant any rights to trademarks,
 * copyrights, patents, trade secrets or any other intellectual property of the
 * licensor or any contributor except as expressly stated herein. No patent
 * license is granted separate from the Software, for code that you delete from
 * the Software, or for combinations of the Software with other software or
 * hardware.
 */

import java.io.*;

import java.nio.channels.FileChannel;

public class Main {
    public static void copyFile(String source, String destination) throws IOException {
        copyFile(new File(source), new File(destination));
    }

    public static void copyFile(File source, File destination) throws IOException {
        if (!source.exists())
            throw new FileNotFoundException("Source not found: " + source);
        if (!source.canRead())
            throw new IOException("Source is unreadable: " + source);
        if (!source.isFile())
            throw new IOException("Source is not a file: " + source);
        if (destination.exists() && !destination.canWrite())
            throw new IOException("Destination is unwritable: " + destination);

        if (destination.getParentFile() != null && !destination.getParentFile().exists()) {
            System.out.println("Creating directory: " + destination.getParentFile());
            destination.getParentFile().mkdirs();
        }

        if (destination.isDirectory()) {
            destination = new File(destination.toString() + File.separator + source.toString());
        }

        System.out.println("Copying " + source + " to " + destination);
        copyFile(new FileInputStream(source), new FileOutputStream(destination));
    }

    public static void copyFile(FileInputStream in, FileOutputStream out) throws IOException {
        FileChannel srcChannel = in.getChannel();
        FileChannel destChannel = out.getChannel();
        try {
            srcChannel.transferTo(0, srcChannel.size(), destChannel);
        } finally {
            if (srcChannel != null)
                srcChannel.close();
            if (destChannel != null)
                destChannel.close();
        }
    }
}

Related

1. copyFile(String inFile, String outFile)
2. copyFile(String inName, String otName)
3. copyFile(String input, String output)
4. copyFile(String origPath, String destPath)
5. copyFile(String source, String destination)
6. copyFile(String source, String destination)
7. copyFile(String source, String target)
8. copyFile(String source, String target)
9. copyFile(String sourceFile, String destFile)