Java FileChannel Copy copyFile(File sourceFile, File targetFile)

Description

copy File

License

Open Source License

Declaration

public static void copyFile(File sourceFile, File targetFile) throws IOException 

Method Source Code

//package com.java2s;
/*//  w  w w .  j a v  a 2 s.c o  m
 *  This file is part of the X10 project (http://x10-lang.org).
 *
 *  This file is licensed to You under the Eclipse Public License (EPL);
 *  You may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *      http://www.opensource.org/licenses/eclipse-1.0.php
 *
 *  (C) Copyright IBM Corporation 2006-2016.
 */

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.channels.FileChannel;

public class Main {
    public static void copyFile(File sourceFile, File targetFile) throws IOException {
        if (targetFile.equals(sourceFile))
            return;
        FileInputStream sourceInputStream = null;
        FileOutputStream targetOutputStream = null;
        try {
            sourceInputStream = new FileInputStream(sourceFile);
            FileChannel sourceChannel = sourceInputStream.getChannel();
            targetOutputStream = new FileOutputStream(targetFile);
            FileChannel targetChannel = targetOutputStream.getChannel();
            sourceChannel.transferTo(0, sourceChannel.size(), targetChannel);
        } finally {
            if (sourceInputStream != null)
                sourceInputStream.close();
            if (targetOutputStream != null)
                targetOutputStream.close();
        }
    }

    public static void copyFile(InputStream sourceInputStream, long sourceSize, File targetFile)
            throws IOException {
        byte[] buf = new byte[1024];
        FileOutputStream targetOutputStream = null;
        try {
            targetOutputStream = new FileOutputStream(targetFile);
            while (sourceSize > 0) {
                int readBytes = sourceInputStream.read(buf);
                targetOutputStream.write(buf, 0, readBytes);
                sourceSize -= readBytes;
            }
        } finally {
            if (sourceInputStream != null)
                sourceInputStream.close();
            if (targetOutputStream != null)
                targetOutputStream.close();
        }
    }
}

Related

1. copyFile(File sourceFile, File destinationFile)
2. copyFile(File sourceFile, File destinationFile)
3. copyFile(File sourceFile, File destinationFile)
4. copyFile(File sourceFile, File targetFile)
5. copyFile(File sourceFile, File targetFile)
6. copyFile(File src, File dest)
7. copyFile(File src, File dest)
8. copyFile(File src, File dest)
9. copyFile(File src, File dest)