Java Rename File rename(File from, File to)

Description

rename

License

Apache License

Declaration

public static boolean rename(File from, File to) 

Method Source Code

//package com.java2s;
/*//from ww w  .  j a  v  a2 s . com
 * 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.
 */

import java.io.Closeable;
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 {
    public static boolean rename(File from, File to) {
        if (!from.renameTo(to)) {
            if (copy(from, to)) {
                if (!delete(from, true /* deleteRoot */)) {
                    return false;
                }
            } else {
                return false;
            }
        }
        return true;
    }

    public static boolean copy(File from, File to) {
        boolean result = true;
        if (from.isDirectory()) {
            if (!to.isDirectory()) {
                if (!to.mkdirs()) {
                    return false;
                }
                File[] files = from.listFiles();
                if (files == null) {
                    return false;
                }
                for (int i = 0; i < files.length; i++) {
                    result &= copy(files[i], new File(to, files[i].getName()));
                }
            }
        } else {
            InputStream input = null;
            OutputStream output = null;
            try {
                input = new FileInputStream(from);
                output = new FileOutputStream(to);
                byte[] buffer = new byte[4096];
                for (int i = input.read(buffer); i > -1; i = input.read(buffer)) {
                    output.write(buffer, 0, i);
                }
            } catch (IOException e) {
                return false;
            } finally {
                if (!closeSilently(output)) {
                    result = false;
                }
                if (!closeSilently(input)) {
                    result = false;
                }
            }
        }
        return result;
    }

    public static boolean delete(File root, boolean deleteRoot) {
        boolean result = true;
        if (root.isDirectory()) {
            File[] files = root.listFiles();
            for (int i = 0; i < files.length; i++) {
                if (files[i].isDirectory()) {
                    result &= delete(files[i], true);
                } else {
                    result &= files[i].delete();
                }
            }
        }
        if (deleteRoot) {
            if (root.exists()) {
                result &= root.delete();
            }
        }
        return result;
    }

    static boolean closeSilently(Closeable closeable) {
        if (closeable != null) {
            try {
                closeable.close();
            } catch (IOException exception) {
                // Ignore; nothing we can do about this...
                return false;
            }
        }
        return true;
    }
}

Related

1. rename(File aFile, File dest)
2. rename(File f1, File f2)
3. rename(File file, String newName, boolean overwite)
4. rename(File file, String prefix, String name, HashMap optional)
5. rename(File from)
6. rename(File from, File to)
7. rename(File from, File to)
8. rename(File from, File to)
9. rename(File from, File to)