Copies the contents of one file to the other using FileChannel s. - Android File Input Output

Android examples for File Input Output:Copy File

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Description

Copies the contents of one file to the other using FileChannel s.

Demo Code

/*/*  w  ww.  j  a v  a 2s . c  o  m*/
 * Copyright 2012 Uwe Trottmann
 *
 * Licensed 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.
 * 
 */
//package com.java2s;

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

import java.nio.channels.FileChannel;

public class Main {
    /**
     * Copies the contents of one file to the other using {@link FileChannel}s.
     *
     * @param src source {@link File}
     * @param dst destination {@link File}
     */
    public static void copyFile(File src, File dst) throws IOException {
        FileInputStream in = new FileInputStream(src);
        FileOutputStream out = new FileOutputStream(dst);
        FileChannel inChannel = in.getChannel();
        FileChannel outChannel = out.getChannel();

        try {
            inChannel.transferTo(0, inChannel.size(), outChannel);
        } finally {
            if (inChannel != null) {
                inChannel.close();
            }
            if (outChannel != null) {
                outChannel.close();
            }
        }

        in.close();
        out.close();
    }
}

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