Java File Read via ByteBuffer readFromFile(String fileName)

Description

read From File

License

Open Source License

Declaration

public final static ByteBuffer readFromFile(String fileName) throws IOException 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.channels.FileChannel.MapMode;

public class Main {
    public final static ByteBuffer readFromFile(String fileName) throws IOException {
        RandomAccessFile fis = null;
        MappedByteBuffer buf = null;
        try {//from   ww w .ja v a 2  s.  c  o m
            fis = new RandomAccessFile(fileName, "r");
            final FileChannel fc = fis.getChannel();
            int size = (int) fc.size();
            buf = fc.map(MapMode.READ_ONLY, 0, size);
            return buf;
        } finally {
            fis.close();
            //          closeDirectBuffer(buf);
        }
    }
}

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6. readFromSocket(SocketChannel channel)
7. readFull(Reader in)
8. readFully(final Reader input, final char[] buffer, final int offset, final int length)
9. readFully(InputStream in)