Java File Rename renameFile(File srcFile, File dstFile)

Description

Rename file.

License

Open Source License

Parameter

Parameter	Description
srcFile	source file
dstFile	destination file

Exception

Parameter	Description
IOException	if any exception occurred

Declaration

public static void renameFile(File srcFile, File dstFile) throws IOException 

Method Source Code

//package com.java2s;
/*// w  ww.j a  v  a2  s .c  om
 * Copyright (C) 2009 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class Main {
    /**
     * Rename file. If file can't be renamed in standard way the coping
     * data will be used instead.
     * 
     * @param srcFile
     *          source file
     * @param dstFile
     *          destination file 
     * @throws IOException
     *          if any exception occurred 
     */
    public static void renameFile(File srcFile, File dstFile) throws IOException {
        // Rename the srcFile file to the new one. Unfortunately, the renameTo()
        // method does not work reliably under some JVMs.  Therefore, if the
        // rename fails, we manually rename by copying the srcFile file to the new one
        if (!srcFile.renameTo(dstFile)) {
            InputStream in = null;
            OutputStream out = null;
            try {
                in = new FileInputStream(srcFile);
                out = new FileOutputStream(dstFile);

                transfer(in, out);
            } catch (IOException ioe) {
                IOException newExc = new IOException("Cannot rename " + srcFile + " to " + dstFile);
                newExc.initCause(ioe);
                throw newExc;
            } finally {
                if (in != null) {
                    in.close();
                }

                if (out != null) {
                    out.close();
                }
            }

            // delete the srcFile file.
            srcFile.delete();
        }
    }

    /**
     * Transfer bytes from in to out
     */
    public static void transfer(InputStream in, OutputStream out) throws IOException {
        byte[] buf = new byte[2048];

        int len;

        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
    }
}

Related

1. renameFile(File sourceFile, String newFileName)
2. renameFile(File src, File dest)
3. renameFile(File src, File dest)
4. renameFile(File src, File dest, boolean overwrite)
5. renameFile(File srcFile, File destFile)
6. renameFile(File srcFile, File renameToFile)
7. renameFile(final File path, final String fname)
8. renameFile(final String oldName, final String newName)
9. renameFile(String currentPath, String newPath)