Java Convert via ByteBuffer toMappedBuffer(File file)

Description

to Mapped Buffer

License

Open Source License

Declaration

public static ByteBuffer toMappedBuffer(File file) throws IOException 

Method Source Code

//package com.java2s;
//  are made available under the terms of the Eclipse Public License v1.0

import java.io.File;
import java.io.IOException;

import java.io.RandomAccessFile;

import java.nio.ByteBuffer;

import java.nio.channels.FileChannel.MapMode;

public class Main {
    public static ByteBuffer toMappedBuffer(File file) throws IOException {
        RandomAccessFile raf = null;
        try {//  ww  w  .  jav  a  2s  .co m
            raf = new RandomAccessFile(file, "r");
            return raf.getChannel().map(MapMode.READ_ONLY, 0, raf.length());
        } finally {
            if (raf != null) {
                raf.close();
            }

        }
    }

    /** Get remaining from null checked buffer
     * @param buffer The buffer to get the remaining from, in flush mode.
     * @return 0 if the buffer is null, else the bytes remaining in the buffer.
     */
    public static int length(ByteBuffer buffer) {
        return buffer == null ? 0 : buffer.remaining();
    }
}

Related

1. toLong(byte[] bytes)
2. toLongArray(byte[] b)
3. ToLongArray(byte[] data)
4. toLongArray(byte[] ids)
5. toMappedBuffer(File file)
6. toMappedBuffer(File file, long start, long end)
7. toMsftBinary(UUID uuid)
8. toShort(byte firstByte, byte secondByte)
9. toShort(byte[] bytes, int index)