Java FileInputStream Copy copyFile(File source, File target)

Description

copy File

License

Apache License

Declaration

public static long copyFile(File source, File target) throws IOException 

Method Source Code

//package com.java2s;
/*/*from ww w  .  j av a 2 s . c o  m*/
 * 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.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class Main {
    public static long copyFile(File source, File target) throws IOException {
        long total = 0;

        FileInputStream fis = null;
        OutputStream fos = null;
        try {
            fis = new FileInputStream(source);

            mkdirs(target.getParentFile());

            fos = new BufferedOutputStream(new FileOutputStream(target));

            for (byte[] buffer = new byte[1024 * 32];;) {
                int bytes = fis.read(buffer);
                if (bytes < 0) {
                    break;
                }

                fos.write(buffer, 0, bytes);

                total += bytes;
            }

            fos.close();
            fos = null;

            fis.close();
            fis = null;
        } finally {
            try {
                if (fos != null) {
                    fos.close();
                }
            } catch (final IOException e) {
                // Suppressed due to an exception already thrown in the try block.
            } finally {
                try {
                    if (fis != null) {
                        fis.close();
                    }
                } catch (final IOException e) {
                    // Suppressed due to an exception already thrown in the try block.
                }
            }
        }

        return total;
    }

    public static boolean mkdirs(File directory) {
        if (directory == null) {
            return false;
        }

        if (directory.exists()) {
            return false;
        }
        if (directory.mkdir()) {
            return true;
        }

        File canonDir = null;
        try {
            canonDir = directory.getCanonicalFile();
        } catch (IOException e) {
            return false;
        }

        File parentDir = canonDir.getParentFile();
        return (parentDir != null && (mkdirs(parentDir) || parentDir.exists()) && canonDir.mkdir());
    }
}

Related

1. copyFile(File source, File target)
2. copyFile(File source, File target)
3. copyFile(File source, File target)
4. copyFile(File source, File target)
5. copyFile(File source, File target)
6. copyFile(File source, File target)
7. copyFile(File source, File target, boolean createParents, FileFilter filter)
8. copyFile(File source, File target, boolean deleteSourceAfter)
9. copyFile(File source, File target, boolean replaceIfExists)