Java FileInputStream Copy copyFile(String source, String destination)

Description

Method to copy a single file.

License

Open Source License

Parameter

Parameter	Description
source	source file
destination	destination file

Declaration

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

Method Source Code

//package com.java2s;
/*//from w ww .j  a va  2  s .  c o m
 * DAITSS Copyright (C) 2007 University of Florida
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

import java.io.IOException;

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

import java.io.FileOutputStream;

public class Main {
    /**
     * Method to copy a single file. Works for relative and absolute paths.
     * 
     * @param source
     *            source file
     * @param destination
     *            destination file
     * @exception IOException
     *                if operation fails
     */
    public static void copyFile(String source, String destination) throws IOException {
        File src = new File(source);
        File dest = new File(destination);

        // Make sure the specified source exists, is readable, and is a file.
        if (!src.isFile())
            throw new IOException("SubAccount " + src + "is not a file");
        if (!src.canRead())
            throw new IOException("SubAccount " + src + "is unreadable");

        // get directory of destination
        File newDir = new File(destination.substring(0, destination.lastIndexOf(File.separator)));
        // if the destination directory doesn't already exist, then try to
        // create it (and all
        // intermediate directories)
        if (!newDir.exists()) {
            if (!newDir.mkdirs()) {
                throw new IOException("Unable to create directories: " + dest);
            }
        }

        // create input and output streams for byte transfer
        FileInputStream fis = new FileInputStream(src);
        FileOutputStream fos = new FileOutputStream(dest);

        // transfer bytes in 8K chunks
        byte[] buffer = new byte[8 * 1024];
        while (true) {
            int bytes_read = fis.read(buffer);
            if (bytes_read == -1)
                break;
            fos.write(buffer, 0, bytes_read);
        }
        // close input/output streams
        if (fis != null)
            try {
                fis.close();
                fis = null;
            } catch (IOException e) {
                ;
            }
        if (fos != null)
            try {
                fos.close();
                fos = null;
            } catch (IOException e) {
                ;
            }

        // clean up
        src = null;
        dest = null;
        newDir = null;
    }
}

Related

1. copyFile(String quelle, String ziel)
2. copyFile(String resourceFimeName, String targetFileName)
3. copyFile(String s, String s1)
4. copyFile(String source, String dest)
5. copyFile(String source, String destination)
6. copyFile(String source, String destination)
7. copyFile(String source, String destination)
8. copyFile(String source, String target)
9. copyFile(String source, String targetDirectory, String filesep)