Java FileChannel Copy copyFile(final File in, final File out)

Description

copy File

License

Apache License

Declaration

static void copyFile(final File in, final File out) throws IOException 

Method Source Code

//package com.java2s;
/*//from   www.ja va 2 s  .c om
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

import java.io.Closeable;
import java.io.File;
import java.io.IOException;

import java.io.RandomAccessFile;
import java.nio.channels.FileChannel;

public class Main {
    static void copyFile(final File in, final File out) throws IOException {
        RandomAccessFile f1 = new RandomAccessFile(in, "r");
        RandomAccessFile f2 = new RandomAccessFile(out, "w");
        try {
            FileChannel c1 = f1.getChannel();
            FileChannel c2 = f2.getChannel();
            try {
                c1.transferTo(0, f1.length(), c2);
                c1.close();
                c2.close();
            } catch (IOException ex) {
                closeSilently(c1);
                closeSilently(c2);
                // Propagate the original exception
                throw ex;
            }
            f1.close();
            f2.close();
        } catch (IOException ex) {
            closeSilently(f1);
            closeSilently(f2);
            // Propagate the original exception
            throw ex;
        }
    }

    static void closeSilently(final Closeable closable) {
        try {
            closable.close();
        } catch (IOException ignore) {
        }
    }
}

Related

1. copyFile(File srcFile, File destFile, boolean preserveFileDate)
2. copyFile(File srcFile, File dstFile, boolean overwrite)
3. copyFile(FileChannel in, FileChannel out)
4. copyFile(FileInputStream fromFile, FileOutputStream toFile)
5. copyFile(final File in, final File out)
6. copyFile(final File input, final File output)
7. copyFile(final File src, final File dest)
8. copyFile(final File src, final File dst)
9. copyFile(final File srcFile, final File destFile)