Java File Read via ByteBuffer readFileIntoString(File localFile)

Description

read File Into String

License

Open Source License

Declaration

private static String readFileIntoString(File localFile) throws Exception 

Method Source Code

//package com.java2s;
/***********************************************************************************************
 * Copyright (c) Microsoft Corporation All rights reserved.
 * /* w w w . ja  v  a 2  s .  c  o m*/
 * MIT License:
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 ***********************************************************************************************/

import java.io.File;
import java.io.FileInputStream;

import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.charset.Charset;

public class Main {
    private static String readFileIntoString(File localFile) throws Exception {
        FileInputStream stream = new FileInputStream(localFile);
        try {
            FileChannel fc = stream.getChannel();
            MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
            /* Instead of using default, pass in a decoder. */
            return Charset.defaultCharset().decode(bb).toString();
        } finally {
            stream.close();
        }
    }
}

Related

1. readFileChannelFully(FileChannel fileChannel, byte buf[], int off, int len)
2. readFileChannelFully(FileChannel fileChannel, byte buf[], int off, int len)
3. readFileDataIntoBufferBE(FileChannel fc, final int size)
4. readFileFragment(FileChannel fc, long pos, int size)
5. readFileHeader(FileInputStream fpi)
6. readFileIntoString(String path)
7. readFileNIO(String path, StringBuilder builder)
8. readFileToBuffer(java.io.File file)
9. readFileToString(String path)