Java FileChannel Copy copyFile(File source, File target)

Description

copy File

License

Open Source License

Declaration

private static void copyFile(File source, File target) throws IOException 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2013 Red Hat, Inc./*from w ww.j a v a2  s  .  c om*/
 * Distributed under license by Red Hat, Inc. All rights reserved.
 * This program is made available under the terms of the
 * Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Red Hat, Inc. - initial API and implementation
 ******************************************************************************/

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

import java.io.FileOutputStream;

import java.io.IOException;

import java.net.URL;

import java.nio.channels.FileChannel;

public class Main {
    private static void copyFile(File source, File target) throws IOException {

        File file = null;
        if (source.isDirectory() && source.exists() && target.isDirectory() && target.exists()) {

            File[] children = source.listFiles();
            for (File child : children) {
                file = target;
                if (child.isDirectory()) {
                    file = new File(target, child.getName());
                    if (!file.exists())
                        file.mkdir();
                }
                copyFile(child, file);
            }
        } else {// source is a file
            if (target.isFile()) {
                file = target;
            } else {
                file = new File(target, source.getName());
            }

            FileChannel out = null;
            FileChannel in = null;
            try {
                if (!file.exists()) {
                    file.createNewFile();
                }

                out = new FileOutputStream(file).getChannel();
                in = new FileInputStream(source).getChannel();
                in.transferTo(0, in.size(), out);
            } catch (IOException e) {
                e.printStackTrace();
                throw e;
            } finally {
                if (out != null)
                    out.close();
                if (in != null)
                    in.close();
            }
        }
    }

    private static boolean isFile(URL url) {
        return "file".equals(url.getProtocol());
    }
}

Related

1. copyFile(File source, File destination)
2. copyFile(File source, File destination, boolean overwrite)
3. copyFile(File source, File destination, long chunkSize, boolean overwrite)
4. copyFile(File source, File target)
5. copyFile(File source, File target)
6. copyFile(File source, File target)
7. copyFile(File source, File target)
8. copyFile(File sourceFile, File destFile)
9. copyFile(File sourceFile, File destFile)