Java FileInputStream Copy copyFile(File fromFile, File toFile)

Description

copy File

License

Open Source License

Parameter

Parameter	Description
fromFile	a parameter
toFile	a parameter

Exception

Parameter	Description
IOException	an exception

Declaration

public static void copyFile(File fromFile, File toFile) throws IOException 

Method Source Code

//package com.java2s;
/*/*from   w  w  w . j av  a2 s .  co  m*/
 * #%L
 * Osm2garminAPI
 * %%
 * Copyright (C) 2011 - 2012 Frantisek Mantlik <frantisek at mantlik.cz>
 * %%
 * 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, see
 * <http://www.gnu.org/licenses/gpl-2.0.html>.
 * #L%
 */

import java.io.*;

public class Main {
    /**
     *
     * @param fromFile
     * @param toFile
     * @throws IOException
     */
    public static void copyFile(File fromFile, File toFile) throws IOException {
        String fromFileName = fromFile.getName();
        String toFileName = toFile.getName();
        if (!fromFile.exists()) {
            throw new IOException("FileCopy: " + "no such source file: " + fromFile.getPath());
        }
        if (!fromFile.isFile()) {
            throw new IOException("FileCopy: " + "can't copy directory: " + fromFileName);
        }
        if (!fromFile.canRead()) {
            throw new IOException("FileCopy: " + "source file is unreadable: " + fromFileName);
        }

        if (toFile.isDirectory()) {
            toFile = new File(toFile, fromFile.getName());
        }

        String parent = toFile.getParent();
        if (parent == null) {
            parent = System.getProperty("user.dir");
        }
        File dir = new File(parent);
        if (!dir.exists()) {
            throw new IOException("FileCopy: " + "destination directory doesn't exist: " + parent);
        }
        if (dir.isFile()) {
            throw new IOException("FileCopy: " + "destination is not a directory: " + parent);
        }
        if (!dir.canWrite()) {
            throw new IOException("FileCopy: " + "destination directory is unwriteable: " + parent);
        }
        FileInputStream from;
        from = new FileInputStream(fromFile);
        copyFile(from, toFile);
    }

    /**
     *
     * @param from
     * @param toFile
     * @throws IOException
     */
    public static void copyFile(InputStream from, File toFile) throws IOException {

        FileOutputStream to = null;
        try {
            to = new FileOutputStream(toFile);
            byte[] buffer = new byte[4096];
            int bytesRead;

            while ((bytesRead = from.read(buffer)) != -1) {
                to.write(buffer, 0, bytesRead); // write
            }
        } finally {
            if (from != null) {
                try {
                    from.close();
                } catch (IOException e) {
                }
            }
            if (to != null) {
                try {
                    to.close();
                } catch (IOException e) {
                }
            }
        }
    }
}

Related

1. copyFile(File from, File to, byte[] buf)
2. copyFile(File from, File toDir)
3. copyFile(File from, File toFile)
4. copyFile(File fromFile, File toFile)
5. copyFile(File fromFile, File toFile)
6. copyFile(File fromFile, File toFile, IProgressMonitor monitor)
7. copyFile(File in, File out)
8. copyFile(File in, File out)
9. copyFile(File in, File out)