Reverse binary file

Scratch.java

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.RandomAccessFile;

class Scratch {
    public static void main(String[] args) throws IOException {
        RandomAccessFile file = new RandomAccessFile(new File(args[0]), "r");
        File out = new File(args[0] + ".rev");
        FileOutputStream outFile = new FileOutputStream(out);
        long index, length;
        length = file.length() - 1;
        for (index = length; index >= 0; index--) {
            file.seek(index);
            int s = file.read();
            outFile.write(s);
        }
        file.close();
        outFile.close();
    }
}