Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.io.File;
import java.io.RandomAccessFile;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;

public class Main {
    public static void main(String[] argv) throws Exception {
        File file = new File("filename");
        FileChannel channel = new RandomAccessFile(file, "rw").getChannel();
        MappedByteBuffer buf = channel.map(FileChannel.MapMode.READ_WRITE, 0, (int) channel.size());

        buf.put(0, (byte) 0xFF);

        buf.force();

        channel.close();
    }
}