Java File Read via ByteBuffer readContent(File file)

Description

Read the content from the given file

License

Open Source License

Parameter

Parameter	Description
file	a parameter

Exception

Parameter	Description
IOException	an exception

Return

the file content

Declaration

public static String readContent(File file) throws IOException 

Method Source Code

//package com.java2s;
/*/*from w ww  .j a va2  s  . c  o  m*/
 * Copyright (C) 2012 Alex Cojocaru
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

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

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

public class Main {
    /**
     * Read the content from the given file
     * @param file
     * @return the file content
     * @throws IOException
     */
    public static String readContent(File file) throws IOException {
        if (!file.exists())
            throw new IOException("Source file does not exist");

        FileInputStream stream = new FileInputStream(file);
        try {
            FileChannel fc = stream.getChannel();
            MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
            return Charset.defaultCharset().decode(bb).toString();
        } finally {
            stream.close();
        }
    }
}

Related

1. readBytes(Path file)
2. readBytes(ReadableByteChannel channel, byte[] array)
3. readBytes(String file)
4. readCode(byte[] message)
5. readColumnarKeyBlockDataForNoDictionaryCols(byte[] columnarKeyBlockData)
6. readContentsNIO(FileInputStream input, String encoding, boolean decodeNIO)
7. readData(String fileName, int size)
8. readDelimitedFromInputStream(InputStream inputStream)
9. readDouble(BufferedReader br, double[] buf)